Common Issues with Subaru Dex: A Comprehensive Guide

By Brian Wong, Reviewed by: Kurt Niebuhr, Updated on April 24, 2024
1. Issues with Subaru Dex by Year and Model
1.1. 2008 Subaru Dex
1.1.1. Engine Problems
1.1.2. Transmission Problems
1.1.3. Electrical Problems
1.2. 2009 Subaru Dex
1.2.1. Suspension Problems
1.2.2. Brake Problems
1.2.3. Air Conditioning Problems
2. Issues with Subaru Dex by Engine Type
2.1. 1.5-liter EJ15 Engine
2.1.1. Engine Misfires
2.1.2. Low Power
2.2. 2.0-liter EJ20 Engine
2.2.1. Overheating
2.2.2. Oil Consumption
2.3. Common Issues Across Engine Types
2.3.1. Fuel System Problems
2.3.2. Electrical Problems
2.3.3. Suspension Problems
3. Issues with Subaru Dex by Complectations and Generations
3.1. 1.5i Complectation
3.1.1. Transmission Problems
3.1.2. Electrical Problems
3.1.3. Engine Problems
3.2. 2.0i Complectation
3.2.1. Brake Problems
3.2.2. Air Conditioning Problems
3.2.3. Suspension Problems
4. Conclusion
FAQ: Common Issues with Subaru Dex
Example List of subaru dex Engine Error Codes and Descriptions

1. Issues with Subaru Dex by Year and Model

1.1. 2008 Subaru Dex

1.1.1. Engine Problems

The Subaru Dex is a reliable car, but like any vehicle, it can experience issues over time. One of the most common problems reported by owners of the 2008 Subaru Dex is engine trouble.

One issue that has been reported is engine knocking. This occurs when the engine produces a knocking sound, especially when accelerating or idling. This can be caused by a number of factors, such as low oil pressure or insufficient lubrication. If the engine is not properly lubricated, it can cause damage to the engine components, leading to more serious problems down the line.

Another issue reported by owners is a lack of power. This can be caused by a number of factors, including clogged fuel filters or a malfunctioning fuel pump. If the fuel system is not functioning properly, it can cause the engine to run inefficiently, resulting in a loss of power.

In some cases, owners have reported issues with the engine misfiring. This occurs when the engine fails to ignite the fuel and air mixture correctly, causing it to run rough or stall. This can be caused by a number of factors, such as a faulty ignition coil or spark plug. If the ignition system is not functioning properly, it can cause the engine to misfire, leading to a loss of power and decreased performance.

If you are experiencing any of these issues with your 2008 Subaru Dex, it is important to address them promptly in order to prevent further damage and ensure the longevity of your vehicle. Consult with a qualified mechanic to properly diagnose the issue and determine the best course of action for repair. Proper maintenance and timely repairs can help keep your Subaru Dex running smoothly for years to come.

1.1.2. Transmission Problems

Transmission problems are a common issue reported by owners of the 2008 Subaru Dex. Some of the most common transmission problems include slipping or difficulty shifting gears.

Slipping transmission is a problem where the transmission shifts gears involuntarily, causing the engine to race without a corresponding increase in speed. This can be caused by a variety of factors, including low transmission fluid levels, worn or damaged transmission components, or a faulty torque converter. If the transmission fluid levels are low, the transmission can overheat, leading to damage to the transmission components.

Difficulty shifting gears is another common transmission problem reported by owners. This can be caused by a variety of factors, such as worn or damaged gears, a faulty clutch, or a malfunctioning shift solenoid. When the gears are worn or damaged, they can fail to engage properly, making it difficult to shift between gears. Similarly, a faulty clutch or malfunctioning shift solenoid can cause difficulty shifting gears.

Owners have also reported issues with the transmission not engaging or slipping out of gear. This can be caused by a faulty transmission pump, a damaged transmission valve body, or a worn or damaged clutch. When the transmission pump is faulty, it can cause a lack of pressure, preventing the transmission from engaging properly. Similarly, a damaged valve body or worn clutch can cause the transmission to slip out of gear.

If you are experiencing any of these issues with your 2008 Subaru Dex, it is important to address them promptly in order to prevent further damage and ensure the longevity of your vehicle. Consult with a qualified mechanic to properly diagnose the issue and determine the best course of action for repair. Proper maintenance and timely repairs can help keep your Subaru Dex running smoothly for years to come.

1.1.3. Electrical Problems

Electrical problems are another common issue reported by owners of the 2008 Subaru Dex. Some of the most common electrical problems include issues with the battery, alternator, and starter.

One issue reported by owners is a dead battery. This occurs when the battery fails to hold a charge or loses its charge quickly. This can be caused by a number of factors, such as a faulty alternator or starter, or a malfunctioning battery. If the alternator or starter is not functioning properly, it can cause the battery to drain, leading to a dead battery.

Another issue reported by owners is a malfunctioning alternator. The alternator is responsible for charging the battery while the engine is running. If the alternator is not functioning properly, it can cause a number of issues, such as dimming headlights, a dead battery, or a malfunctioning electrical system.

Issues with the starter can also cause problems with the electrical system. The starter is responsible for starting the engine. If the starter is not functioning properly, it can cause a number of issues, such as a slow or hesitant engine start, or an engine that fails to start altogether.

Owners have also reported issues with the electrical system, such as malfunctioning lights, radio, or other accessories. This can be caused by a number of factors, such as a blown fuse, faulty wiring, or a malfunctioning component.

If you are experiencing any of these issues with your 2008 Subaru Dex, it is important to address them promptly in order to prevent further damage and ensure the longevity of your vehicle. Consult with a qualified mechanic to properly diagnose the issue and determine the best course of action for repair. Proper maintenance and timely repairs can help keep your Subaru Dex running smoothly for years to come.

1.2. 2009 Subaru Dex

1.2.1. Suspension Problems

Suspension problems are one of the most common issues reported by owners of the 2009 Subaru Dex. The suspension system is responsible for providing a smooth ride and handling of the vehicle, and when it is not functioning properly, it can cause a number of issues.

One of the most common suspension issues reported by owners is a squeaking or creaking noise when going over bumps or rough roads. This can be caused by a number of factors, such as worn out suspension components, damaged bushings, or a damaged strut mount.

Another issue reported by owners is a bouncy ride, where the vehicle tends to bounce excessively over bumps or dips in the road. This can be caused by a number of factors, such as worn out shocks or struts, damaged springs, or a damaged suspension mount.

Owners have also reported issues with the alignment of the wheels. When the wheels are not properly aligned, it can cause uneven tire wear, poor handling, and a rough ride. This can be caused by a number of factors, such as worn out suspension components, damaged tie rods, or a damaged steering rack.

If you are experiencing any of these issues with your 2009 Subaru Dex, it is important to address them promptly in order to prevent further damage and ensure the safety and comfort of your vehicle. Consult with a qualified mechanic to properly diagnose the issue and determine the best course of action for repair. Regular maintenance and timely repairs can help keep your Subaru Dex suspension system in top condition and ensure a smooth ride for years to come.

1.2.2. Brake Problems

Brake problems are a serious concern for any vehicle, and the 2009 Subaru Dex is no exception. Some of the common brake issues reported by owners include grinding or squeaking noises when applying the brakes, a soft or spongy brake pedal, and reduced braking performance.

One of the most common causes of brake noise in the 2009 Subaru Dex is worn out brake pads. Over time, the friction material on the pads wears down, causing metal-to-metal contact between the pads and rotors, which can result in a grinding noise. Squeaking noises may also be caused by worn out brake pads, but they can also be caused by glazed pads, contaminated brake components, or loose caliper bolts.

A soft or spongy brake pedal is another common issue reported by owners. This can be caused by a number of factors, such as air in the brake lines, a leak in the brake system, or a malfunctioning master cylinder. Reduced braking performance can also be caused by a number of factors, such as worn out brake pads or rotors, a malfunctioning brake booster, or a leak in the brake system.

Regular maintenance is key to preventing brake issues in the 2009 Subaru Dex. It is important to have your brakes inspected regularly and to replace brake pads and rotors as needed. If you are experiencing any issues with your brakes, it is important to have them inspected by a qualified mechanic as soon as possible to ensure your safety on the road. A skilled mechanic can properly diagnose the issue and recommend the best course of action for repair, helping you to maintain the braking performance of your Subaru Dex for years to come.

1.2.3. Air Conditioning Problems

Air conditioning problems can be a major source of frustration for Subaru Dex owners, particularly in hot climates. One of the most common issues reported by owners of the 2009 Subaru Dex is a lack of cold air from the air conditioning system.

A lack of cold air from the air conditioning system can be caused by a number of factors. One of the most common causes is a leak in the refrigerant system. Over time, the refrigerant in the system can leak out, causing the air conditioning system to fail to produce cold air. Other potential causes of a lack of cold air include a malfunctioning compressor, a clogged or dirty air filter, or a malfunctioning thermostat.

Another common air conditioning issue reported by owners of the 2009 Subaru Dex is a foul odor coming from the vents when the air conditioning is turned on. This can be caused by a buildup of bacteria and mold in the air conditioning system, which can be particularly common in humid climates. Regular air conditioning system maintenance, such as changing the cabin air filter and having the system cleaned and serviced, can help prevent this issue.

If you are experiencing issues with your air conditioning system, it is important to have it inspected by a qualified mechanic. A skilled mechanic can properly diagnose the issue and recommend the best course of action for repair, helping you to stay cool and comfortable in your Subaru Dex no matter what the weather is like outside.

2. Issues with Subaru Dex by Engine Type

2.1. 1.5-liter EJ15 Engine

2.1.1. Engine Misfires

Engine misfires can be a frustrating and potentially serious issue for owners of the Subaru Dex with the 1.5-liter EJ15 engine. A misfire occurs when one or more cylinders in the engine fail to ignite fuel and air in the combustion process. This can result in a number of symptoms, including rough idling, poor acceleration, and decreased fuel economy.

One of the most common causes of engine misfires in the 1.5-liter EJ15 engine is a faulty ignition coil. The ignition coil is responsible for providing the spark that ignites the fuel and air mixture in the combustion chamber. A faulty ignition coil can result in weak or inconsistent spark, leading to engine misfires. Other potential causes of engine misfires in the 1.5-liter EJ15 engine include a clogged fuel injector, a malfunctioning spark plug, or a vacuum leak.

If you are experiencing engine misfires in your Subaru Dex with the 1.5-liter EJ15 engine, it is important to have the issue diagnosed and repaired by a qualified mechanic as soon as possible. Ignoring engine misfires can lead to further engine damage and decreased performance. A skilled mechanic can diagnose the underlying cause of the misfire and recommend the appropriate course of action for repair, which may include replacing faulty ignition coils, cleaning or replacing fuel injectors, or replacing malfunctioning spark plugs.

Regular maintenance of your Subaru Dex can also help prevent engine misfires. This includes regular oil changes, replacing air and fuel filters, and ensuring that spark plugs and ignition coils are in good condition. By taking good care of your vehicle and addressing any issues as soon as they arise, you can help keep your Subaru Dex running smoothly and efficiently.

2.1.2. Low Power

Low power can be a frustrating and concerning issue for owners of the Subaru Dex with the 1.5-liter EJ15 engine. Low power can manifest itself as a lack of acceleration or a general feeling of sluggishness while driving. There are several potential causes of low power in the 1.5-liter EJ15 engine.

One possible cause of low power is a clogged or dirty air filter. The air filter is responsible for removing impurities from the air before it is mixed with fuel and ignited in the combustion chamber. A clogged or dirty air filter can restrict airflow to the engine, resulting in decreased power and efficiency. Regularly replacing your air filter can help prevent this issue.

Another potential cause of low power is a malfunctioning fuel pump or fuel filter. The fuel pump is responsible for supplying fuel to the engine, while the fuel filter removes impurities from the fuel before it reaches the engine. A malfunctioning fuel pump or fuel filter can restrict fuel flow to the engine, resulting in decreased power and performance.

Low power can also be caused by a malfunctioning sensor or component in the engine control system. The engine control system uses sensors and components to monitor and regulate various aspects of engine performance, such as fuel delivery, ignition timing, and emissions. A malfunctioning sensor or component can result in decreased power and efficiency.

If you are experiencing low power in your Subaru Dex with the 1.5-liter EJ15 engine, it is important to have the issue diagnosed and repaired by a qualified mechanic. A skilled mechanic can diagnose the underlying cause of the issue and recommend the appropriate course of action for repair, which may include replacing a clogged air filter, repairing or replacing a malfunctioning fuel pump or fuel filter, or replacing a faulty sensor or component in the engine control system.

Regular maintenance and upkeep of your Subaru Dex can also help prevent low power issues. This includes regular oil changes, replacing air and fuel filters, and addressing any issues as soon as they arise. By taking good care of your vehicle, you can help ensure that it runs smoothly and efficiently for years to come.

2.2. 2.0-liter EJ20 Engine

2.2.1. Overheating

Overheating is a common problem with the Subaru Dex, especially those equipped with the 2.0-liter EJ20 engine. The issue can arise due to several reasons, including a malfunctioning thermostat, a damaged radiator, a faulty water pump, or a blown head gasket.

A malfunctioning thermostat can cause the engine to overheat as it may not open and close as it should, leading to a lack of coolant flow. This can be diagnosed by checking the temperature gauge, and if it does not move or is constantly high, it may indicate a faulty thermostat.

A damaged radiator can also lead to overheating as it may not be able to dissipate heat efficiently. This can be caused by clogs, leaks, or damage to the fins. A visual inspection of the radiator can help identify any issues, such as leaks or visible damage to the fins.

A faulty water pump can also cause overheating as it may not be circulating coolant through the engine effectively. This can be diagnosed by checking for leaks and ensuring that the water pump pulley is not loose or wobbling.

A blown head gasket can also lead to overheating as it may allow coolant to leak into the combustion chamber, leading to high temperatures and potential engine damage. Symptoms of a blown head gasket may include a loss of coolant, white smoke from the exhaust, or a milky appearance to the engine oil.

Regular maintenance and inspection can help prevent overheating issues in the Subaru Dex with the 2.0-liter EJ20 engine. Keeping the coolant system clean and flushed, checking for leaks or damage to the radiator, and ensuring that the water pump is functioning properly can help keep the engine running at a safe temperature.

2.2.2. Oil Consumption

The 2.0-liter EJ20 engine in the Subaru Dex has been known to have issues with high oil consumption. This can be caused by a number of factors, such as worn piston rings, valve seals, or a clogged PCV valve.

When the piston rings are worn, oil can leak past them and into the combustion chamber, where it is burned and exits the exhaust as blue smoke. This can also lead to reduced engine performance and increased emissions.

Valve seals can also cause oil consumption issues, as they prevent oil from being drawn into the combustion chamber during the intake stroke. If these seals are worn or damaged, oil can leak past them and be burned along with the air/fuel mixture.

Finally, a clogged PCV valve can cause increased crankcase pressure, which can force oil past the piston rings and into the combustion chamber. This can also cause other issues such as a rough idle and reduced engine performance.

If you notice your Subaru Dex is consuming oil at a higher rate than usual, it is important to address the issue promptly. This may involve replacing worn or damaged parts, cleaning or replacing the PCV valve, or performing other maintenance tasks to ensure the engine is running properly. Failure to address oil consumption issues can lead to further engine damage and potentially costly repairs in the future.

2.3. Common Issues Across Engine Types

2.3.1. Fuel System Problems

The fuel system is an essential component of any car, and the Subaru Dex is no exception. Although the specific engine types may vary, there are common fuel system problems that can occur across all engine types. Some of the most common issues include:

1. Clogged Fuel Filter: Over time, the fuel filter can become clogged with dirt and debris, restricting the flow of fuel to the engine. This can cause a lack of power and poor fuel economy. Regular replacement of the fuel filter can prevent this issue.

2. Faulty Fuel Pump: The fuel pump is responsible for pumping fuel from the tank to the engine. If the fuel pump fails, fuel will not be delivered to the engine, causing it to stall or not start at all.

3. Dirty Fuel Injectors: Fuel injectors spray fuel into the engine's combustion chamber, and over time they can become clogged with dirt and debris. This can cause a misfire and decreased fuel efficiency. Regular cleaning of the fuel injectors can prevent this issue.

4. Bad Fuel Pressure Regulator: The fuel pressure regulator is responsible for maintaining a consistent fuel pressure in the system. If it fails, it can cause erratic engine performance and poor fuel economy.

5. Fuel Tank Issues: Fuel tanks can develop leaks or cracks, causing fuel to leak out and potentially creating a fire hazard. Additionally, fuel tanks can become contaminated with debris or rust, which can cause fuel system issues.

It is important to address any fuel system issues promptly to prevent further damage to the engine and ensure optimal performance and fuel efficiency. Regular maintenance and inspection of the fuel system can help prevent these common problems.

2.3.2. Electrical Problems

Subaru Dex may experience some common electrical problems across different engine types, such as:

1. Dead Battery: One of the most common electrical problems with any vehicle is a dead battery. If the battery is not charged or has a bad connection, the engine may not start or may stop running while driving.

2. Alternator Failure: The alternator is responsible for keeping the battery charged while the engine is running. If the alternator is faulty, the battery may not receive enough charge, causing the engine to stall or not start.

3. Starter Motor Failure: The starter motor is responsible for cranking the engine to start. If the starter motor fails, the engine won't start, and the vehicle will be unable to move.

4. Wiring Issues: Electrical wiring problems can cause a variety of issues, including flickering lights, malfunctioning gauges, and even engine stalling. This can be caused by a damaged wire, a loose connection, or a short circuit.

5. Ignition Switch Failure: The ignition switch is responsible for starting the engine and powering the electrical systems. If the switch fails, the engine won't start, or the electrical systems won't work.

If you experience any of these electrical problems with your Subaru Dex, it's best to have a qualified mechanic diagnose and repair the issue. Regular maintenance and inspections can help prevent these issues from occurring in the first place. Additionally, it's important to use quality parts and components when repairing any electrical problems to avoid further issues down the road.

2.3.3. Suspension Problems

The Subaru Dex is a compact car that is known for its reliable and durable suspension system. However, like any other car, it may encounter some suspension issues over time.

One common issue with the Subaru Dex's suspension system is worn-out suspension components such as shock absorbers, struts, and springs. These parts can become damaged over time due to wear and tear, resulting in a rougher ride, increased bouncing, and uneven tire wear. If left unaddressed, worn-out suspension components can cause more serious problems such as damage to other parts of the car, decreased stability while driving, and increased stopping distance.

Another common suspension issue with the Subaru Dex is misaligned wheels. When the wheels are misaligned, the tires wear unevenly, leading to decreased handling and stability. Misaligned wheels can also cause the car to pull to one side, resulting in a potentially dangerous situation while driving.

A third issue that can occur with the Subaru Dex's suspension system is damage to the steering and suspension linkages. This can occur due to an accident, hitting a curb or pothole, or general wear and tear. Damage to these linkages can result in difficulty steering the car, decreased stability, and increased tire wear.

To avoid these suspension issues, it is important to have the suspension system of the Subaru Dex regularly inspected and maintained by a qualified mechanic. Regular maintenance can include replacing worn-out suspension components, checking wheel alignment, and ensuring that the steering and suspension linkages are properly lubricated and adjusted.

3. Issues with Subaru Dex by Complectations and Generations

3.1. 1.5i Complectation

3.1.1. Transmission Problems

Subaru Dex owners have reported several transmission problems with the 1.5i complectation. One common issue is delayed shifting or hesitation when shifting gears, especially from first to second gear. This problem is often caused by a faulty transmission control module, which may need to be replaced.

Another issue reported with the transmission in the 1.5i complectation is a loud whining noise when driving at high speeds. This could be due to worn out bearings or gears in the transmission, which may require a rebuild or replacement.

Some owners have also reported difficulty shifting or a grinding noise when shifting gears. This could be caused by worn out synchronizers, which may need to be replaced.

In addition to these issues, some owners have reported transmission fluid leaks, which can cause damage to the transmission if not addressed promptly. This may be caused by a faulty seal or gasket, which may need to be replaced.

If you are experiencing any of these transmission problems with your Subaru Dex 1.5i complectation, it is important to have the issue diagnosed and repaired promptly to prevent further damage to the transmission.

3.1.2. Electrical Problems

Electrical problems are a common issue faced by Subaru Dex owners, particularly those with the 1.5i Complectation. One common issue is a malfunctioning alternator, which can cause the battery to die and leave the vehicle unable to start. This issue can also cause various other electrical problems such as dimming headlights and flickering dashboard lights.

Another electrical issue faced by Subaru Dex owners is a malfunctioning starter motor. This problem can also cause the vehicle to fail to start and can be due to faulty wiring, a bad connection, or a worn-out starter motor. A faulty ignition switch can also cause starting issues and prevent the engine from turning over.

Additionally, some Subaru Dex models may experience issues with the electrical wiring harness. Over time, the wiring harness can become damaged or corroded, leading to issues with various electrical components. This problem can be difficult to diagnose and repair, as it can affect a wide range of electrical systems in the vehicle.

Owners of the 1.5i Complectation may also experience issues with the electrical power steering system. This system can malfunction and cause the steering wheel to become difficult to turn or lose power assistance altogether. This can be due to a faulty power steering control module or a malfunctioning power steering pump.

Overall, electrical problems can be frustrating and difficult to diagnose and repair. It is important for Subaru Dex owners to regularly maintain their vehicle's electrical systems and promptly address any issues to avoid further damage or safety concerns.

3.1.3. Engine Problems

The 1.5i Complectation of the Subaru Dex has had several engine problems reported by owners. One common issue is a rough idle or stalling at low speeds. This can be caused by a malfunctioning throttle body or idle air control valve. Some owners have also reported a lack of power or hesitation during acceleration, which may be due to a clogged fuel filter or failing fuel injectors.

Another engine problem reported by owners is excessive oil consumption. This can be caused by worn piston rings or valve stem seals, leading to oil burning off in the combustion chamber. In some cases, this issue can be resolved with an engine rebuild or replacement.

In addition, some owners have reported issues with the timing belt and tensioner, which can cause the engine to fail if not replaced at the recommended intervals. It is important to follow the manufacturer's recommended maintenance schedule to avoid these problems.

Overall, owners of the 1.5i Complectation of the Subaru Dex should be aware of these potential engine issues and take preventative measures to avoid costly repairs. Regular maintenance and prompt attention to any warning signs can help prolong the life of the engine.

3.2. 2.0i Complectation

3.2.1. Brake Problems

The Subaru Dex 2.0i complectation is known for experiencing brake problems. One of the most common issues reported by owners is premature wear of the brake pads and rotors. This can lead to decreased braking performance, longer stopping distances, and potentially dangerous situations on the road.

In some cases, owners have also reported issues with the brake calipers sticking or failing to release, which can cause the brakes to drag and result in overheating and premature wear. Another reported issue is the brake pedal feeling spongy or soft, which can indicate a problem with the brake master cylinder or brake lines.

To prevent brake problems, it is important for owners to follow the manufacturer's recommended maintenance schedule and have their brakes inspected regularly. If any issues are detected, they should be addressed promptly by a qualified mechanic to ensure the safe operation of the vehicle.

3.2.2. Air Conditioning Problems

Subaru Dex is a compact car that was produced by Subaru from 2008 to 2012. The 2.0i complectation of the Subaru Dex is known to have issues with the air conditioning system. Owners have reported that the air conditioning system fails to cool the interior of the car. The problem is often caused by a faulty compressor or a leak in the system, which can result in the refrigerant escaping.

Some owners have also reported issues with the air conditioning system's controls, including difficulty adjusting the temperature or changing the fan speed. This issue can be caused by a faulty control module or a malfunctioning sensor.

To address these air conditioning problems, it is recommended to take the car to a qualified mechanic who can diagnose and repair the issue. In some cases, a recharge of the refrigerant or replacement of a faulty part may be necessary.

Overall, while the Subaru Dex 2.0i complectation is known to have air conditioning problems, it is important to note that not all cars will experience these issues. Regular maintenance and inspections of the air conditioning system can help prevent problems from developing and ensure the car's interior remains cool and comfortable.

3.2.3. Suspension Problems

The Subaru Dex is a compact car that was produced from 2008 to 2011. While it is generally known for its reliability, there have been some issues reported with the suspension of the 2.0i complectation. One common issue is with the rear suspension, specifically the coil springs. These have been known to break or become loose, causing a clunking or rattling noise. This can also affect the car's handling and stability, making it feel more unstable or bouncy on the road.

Another issue with the suspension on the 2.0i complectation is with the front struts. These have been known to wear out or fail prematurely, leading to a knocking noise or a bouncy ride. This can also affect the car's steering and handling, making it feel less responsive or accurate on the road.

Owners of the Subaru Dex have also reported issues with the rear shocks on the 2.0i complectation. These can wear out or leak over time, leading to a rough or bouncy ride, and can also affect the car's stability and handling. Additionally, some owners have reported issues with the bushings and links on the front and rear suspension, which can become worn or damaged and cause similar symptoms.

Overall, while the suspension issues on the 2.0i complectation of the Subaru Dex are not extremely common, they can cause significant problems with the car's handling, stability, and ride comfort. It's important for owners to address any suspension issues promptly and have them repaired by a qualified mechanic to ensure the safety and reliability of their vehicle.

4. Conclusion

In conclusion, the Subaru Dex is a compact car that has experienced several issues throughout its production years. These issues range from engine misfires, low power, overheating, oil consumption, fuel system problems, electrical problems, suspension problems, transmission problems, brake problems, and air conditioning problems.

The 1.5-liter EJ15 engine has been known to have engine misfire and low power issues, while the 2.0-liter EJ20 engine has been known to experience overheating and oil consumption problems. The fuel system and electrical problems have been common across all engine types, as have suspension problems.

In terms of the different complectations and generations, the 1.5i Complectation has been known to have engine and electrical problems, while the 2.0i Complectation has been known to experience brake and air conditioning problems, as well as suspension issues.

Overall, while the Subaru Dex can be a reliable car when properly maintained, potential buyers should be aware of the common issues that may arise and should thoroughly inspect the car before making a purchase.

Example List of subaru dex Engine Error Codes and Descriptions

Engine Code/NameEngine Specs (L, Fuel, HP)Part CarError CodeDescription
EJ151.5L, Gasoline, 100 HPImprezaP0171System too lean (Bank 1)
EJ161.6L, Gasoline, 110 HPImprezaP0301Cylinder 1 Misfire Detected
EJ202.0L, Gasoline, 125 HPForesterP0031HO2S Heater Control Circuit Low (Bank 1, Sensor 1)
EE202.0L, Diesel, 147 HPXVP0101Mass or Volume Air Flow Circuit Range/Performance Problem
EJ252.5L, Gasoline, 165 HPLegacyP0031HO2S Heater Control Circuit Low (Bank 1, Sensor 1)
EZ303.0L, Gasoline, 212 HPOutbackP0171System too lean (Bank 1)
EJ2552.5L, Gasoline, 305 HPWRXP0303Cylinder 3 Misfire Detected
FA20DIT2.0L, Gasoline, 268 HPBRZP0236Turbocharger Boost Sensor A Circuit Range/Performance
EJ2532.5L, Gasoline, 175 HPImprezaP0420Catalyst system efficiency below threshold (Bank 1)
FB161.6L, Gasoline, 114 HPXVP0302Cylinder 2 Misfire Detected
FA202.0L, Gasoline, 148 HPImprezaP0301Cylinder 1 Misfire Detected
EZ363.6L, Gasoline, 256 HPLegacyP0420Catalyst system efficiency below threshold (Bank 1)
EJ20G2.0L, Gasoline, 250 HPWRXP0301Cylinder 1 Misfire Detected
FB20D2.0L, Gasoline, 150 HPCrosstrekP0017Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
EJ2552.5L, Gasoline, 230 HPForesterP0030HO2S Heater Control Circuit (Bank 1 Sensor 1)
EJ2072.0L, Gasoline, 276 HPImpreza WRX STIP0340Camshaft Position Sensor Circuit Malfunction
EJ25D2.5L, Gasoline, 165 HPOutbackP0325Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
EJ22E2.2L, Gasoline, 135 HPLegacyP0340Camshaft Position Sensor Circuit Malfunction
EJ2512.5L, Gasoline, 165 HPForesterP0442Evaporative Emission Control System Leak Detected (Small Leak)
EJ20X2.0L, Gasoline, 276 HPWRX STIP0365Camshaft Position Sensor "B" Circuit (Bank 1)
EJ20Y2.0L, Gasoline, 296 HPWRX STIP2096Post Catalyst Fuel Trim System Too Lean Bank 1
EJ2532.5L, Gasoline, 173 HPOutbackP0300Random/Multiple Cylinder Misfire Detected
EZ36D3.6L, Gasoline, 256 HPOutbackP0327Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
FA20F2.0L, Gasoline, 268 HPWRXP0328Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
FB16D1.6L, Gasoline, 114 HPImprezaP0136O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
FA20E2.0L, Gasoline, 152 HPCrosstrekP0303Cylinder 3 Misfire Detected
EJ2042.0L, Gasoline, 148 HPImprezaP0171System too lean (Bank 1)
FB20B2.0L, Gasoline, 148 HPForesterP2096Post Catalyst Fuel Trim System Too Lean Bank 1
EJ2552.5L, Gasoline, 265 HPLegacy GTP0171System too lean (Bank 1)
FB25B2.5L, Gasoline, 170 HPOutbackP2096Post Catalyst Fuel Trim System Too Lean Bank 1
EJ2532.5L, Gasoline, 173 HPForesterP2096Post Catalyst Fuel Trim System Too Lean Bank 1
EJ2572.5L, Gasoline, 305 HPWRX STIP0171System too lean (Bank 1)
FB20D2.0L, Gasoline, 148 HPCrosstrekP0301Cylinder 1 Misfire Detected
EJ2052.0L, Gasoline, 276 HPWRXP0171System too lean (Bank 1)
FB161.6L, Gasoline, 114 HPImprezaP2096Post Catalyst Fuel Trim System Too Lean Bank 1
FA20F2.0L, Gasoline, 200 HPBRZP0171System too lean (Bank 1)
EJ2042.0L, Gasoline, 148 HPImprezaP2096Post Catalyst Fuel Trim System Too Lean Bank 1
FB25D2.5L, Gasoline, 175 HPLegacyP2096Post Catalyst Fuel Trim System Too Lean Bank 1
EZ30D3.0L, Gasoline, 212 HPOutbackP0302Cylinder 2 Misfire Detected
EJ2072.0L, Gasoline, 276 HPWRX STIP0171System too lean (Bank 1)
FB20B2.0L, Gasoline, 148 HPImprezaP2096Post Catalyst Fuel Trim System Too Lean Bank 1
EJ22E2.2L, Gasoline, 135 HPLegacyP0304Cylinder 4 Misfire Detected

FAQ: Common Issues with Subaru Dex

What are some common engine problems with the Subaru Dex?

The 2.0-liter EJ20 engine in the Subaru Dex has been known to have issues with overheating and oil consumption. The EJ20 engine in the 1.5i complectation has also been reported to have issues with knocking and stalling.

What are some common transmission problems with the Subaru Dex?

The 1.5i complectation of the Subaru Dex has been reported to have issues with the CVT transmission. Some owners have reported issues with slipping gears and difficulty shifting.

What are some common electrical problems with the Subaru Dex?

The 1.5i complectation of the Subaru Dex has been reported to have issues with the electrical system. Owners have reported problems with the power windows, locks, and dashboard lights.

What are some common brake problems with the Subaru Dex?

The 2.0i complectation of the Subaru Dex has been reported to have issues with the brakes. Owners have reported problems with the brakes squeaking and vibrating, as well as difficulty stopping the vehicle.

What are some common air conditioning problems with the Subaru Dex?

The 2.0i complectation of the Subaru Dex has been reported to have issues with the air conditioning system. Owners have reported problems with the AC not blowing cold air, as well as strange noises coming from the AC unit.

What are some common suspension problems with the Subaru Dex?

The 1.5i and 2.0i complectations of the Subaru Dex have been reported to have issues with the suspension system. Owners have reported problems with the suspension making noise, as well as difficulty maintaining proper alignment.

Are there any recalls for the Subaru Dex?

There have been several recalls for various models of the Subaru Dex. These include recalls for issues with the fuel system, airbags, and brake lights. It is important to check with your local dealership to see if your vehicle is affected by any current recalls.

What are the common transmission problems with Subaru Dex?

Some common transmission problems with the Subaru Dex include difficulty shifting gears, slipping or jerking when changing gears, and unusual noises coming from the transmission. These issues have been reported across various generations and models of the car.

Are there any air conditioning issues with Subaru Dex?

Yes, some Subaru Dex owners have reported issues with the air conditioning system, including poor cooling performance or complete failure of the system. These issues have been reported in specific models and generations of the car.

What are the most common electrical problems in Subaru Dex?

Common electrical problems in the Subaru Dex include issues with the starter, alternator, and battery, as well as problems with the power windows, locks, and mirrors. These issues have been reported in various models and generations of the car.

What should I do if I experience any of these issues with my Subaru Dex?

If you experience any of the issues mentioned above, it is recommended to bring your car to a certified Subaru mechanic for diagnosis and repair. It is also advisable to regularly maintain and service your car to prevent potential issues from arising in the future.

Are there any recalls or warranties for Subaru Dex?

There have been various recalls issued for Subaru Dex models over the years, so it is important to check with your local dealership or Subaru representative to see if your car is affected. Additionally, some Subaru Dex models may still be covered under a manufacturer's warranty or extended warranty program, so it is worth checking if you are experiencing any issues.

What are some common air conditioning problems in Subaru Dex?

Some common air conditioning problems in Subaru Dex include faulty compressors, leaks in the refrigerant system, and malfunctioning temperature sensors. These issues can cause the air conditioning system to blow hot air or not work at all.

Are there any known brake problems in Subaru Dex?

Yes, some Subaru Dex models have been reported to have issues with the brake system, including uneven wear on the brake pads and rotors, brake fluid leaks, and brake pedal vibration. It is important to have the brake system inspected regularly to ensure safe driving conditions.

What should I do if my Subaru Dex is experiencing electrical problems?

If your Subaru Dex is experiencing electrical problems, it is important to have it diagnosed by a qualified mechanic. Common electrical issues in the Subaru Dex include faulty sensors, malfunctioning ignition coils, and issues with the battery or alternator. Proper maintenance and regular inspections can help prevent these issues from occurring.

How can I prevent oil consumption issues in my Subaru Dex?

Regular oil changes and proper maintenance can help prevent oil consumption issues in the Subaru Dex. It is important to use the recommended oil type and viscosity for your specific engine type, as well as keeping up with scheduled maintenance tasks such as oil filter replacements and oil level checks.

Are there any transmission problems that commonly occur in the Subaru Dex?

Some Subaru Dex models have been reported to have transmission problems, including issues with shifting, rough shifting, and slipping gears. These issues can be caused by worn or damaged transmission components, low transmission fluid levels, or other mechanical issues. It is important to have the transmission inspected and serviced regularly to prevent these problems from occurring.

Are there any known fuel system problems with the Subaru Dex?

Yes, there have been reports of fuel system issues in the Subaru Dex, particularly in the 1.5-liter engine. This can include fuel leaks and problems with the fuel pump. It's important to address these issues promptly to avoid any safety hazards or damage to the vehicle.

What are some common electrical problems with the Subaru Dex?

Some common electrical issues in the Subaru Dex can include problems with the alternator, battery, and starter. There have also been reports of issues with the car's electrical wiring and connections. These issues can cause a variety of problems, such as difficulty starting the car or malfunctioning accessories.

Are there any known suspension issues with the Subaru Dex?

Yes, there have been reports of suspension problems in the Subaru Dex, particularly with the 2.0-liter engine. This can include issues with the struts and shocks, which can cause a bumpy ride and decreased stability. It's important to address suspension issues promptly to avoid any safety hazards or damage to the vehicle.

What are some common transmission problems in the Subaru Dex?

One of the most common transmission issues in the Subaru Dex is problems with the CVT (continuously variable transmission) in the 1.5i complectation. This can include issues with shifting or complete failure of the transmission. It's important to maintain regular transmission maintenance and address any issues promptly to avoid damage to the vehicle.

What kind of engine problems have been reported in the Subaru Dex?

There have been reports of a variety of engine problems in the Subaru Dex, particularly with the 1.5-liter engine. These can include issues with oil consumption, overheating, and misfires. It's important to address engine issues promptly to avoid any safety hazards or damage to the vehicle.

Are there any brake issues with the Subaru Dex?

Yes, there have been reports of brake issues in the Subaru Dex, particularly with the 2.0i complectation. This can include issues with the brake pads, rotors, and calipers, which can cause decreased braking performance and safety hazards. It's important to maintain regular brake maintenance and address any issues promptly to avoid damage to the vehicle.

What kind of air conditioning problems have been reported in the Subaru Dex?

There have been reports of issues with the air conditioning system in the Subaru Dex, particularly with the 2.0i complectation. This can include issues with the compressor, condenser, and refrigerant leaks, which can cause decreased cooling performance and discomfort for passengers. It's important to maintain regular air conditioning maintenance and address any issues promptly to avoid damage to the vehicle.

What is the common issue with the fuel system in the Subaru Dex?

The common issue with the fuel system in the Subaru Dex is a clogged fuel filter, which can lead to poor fuel economy and a loss of power. This problem can occur in all engine types and generations.

What are the common electrical problems in the Subaru Dex?

The common electrical problems in the Subaru Dex include issues with the alternator and battery, which can cause starting problems or a dead battery. Additionally, some owners have reported issues with the power windows and locks. These problems can occur in all engine types and generations.

What is the most common transmission problem in the Subaru Dex 1.5i Complectation?

The most common transmission problem in the Subaru Dex 1.5i Complectation is a slipping transmission, which can cause hesitation and difficulty shifting. This problem can occur in all generations of the 1.5i Complectation.

What are the brake problems commonly found in the Subaru Dex 2.0i Complectation?

The brake problems commonly found in the Subaru Dex 2.0i Complectation include premature wear of the brake pads and rotors, which can cause noise and vibration while braking. This problem can occur in all generations of the 2.0i Complectation.

What are the most common air conditioning problems in the Subaru Dex 2.0i Complectation?

The most common air conditioning problems in the Subaru Dex 2.0i Complectation include a malfunctioning compressor or leaks in the system, which can cause the air conditioning to blow warm air. This problem can occur in all generations of the 2.0i Complectation.

What are the suspension problems commonly found in the Subaru Dex 2.0i Complectation?

The suspension problems commonly found in the Subaru Dex 2.0i Complectation include worn out shocks and struts, which can cause a rough ride and poor handling. This problem can occur in all generations of the 2.0i Complectation.


Brian Wong - Senior Reviews Editor of cars-directory.net

Brian Wong / Author

Brian Wong is an accomplished automotive journalist and editor with a passion for cars. With over a decade of experience in the industry, he has established himself as a trusted voice in the automotive community. Brian has written extensively about a wide range of topics in the field, from the latest trends in car design to innovative safety features and emerging technologies. As a senior reviews editor, he is responsible for test driving and analyzing the latest cars on the market, providing readers with accurate and objective reviews. His articles are widely read and respected for their depth of knowledge and analysis. Brian is committed to staying at the forefront of the latest developments in the automotive industry, and is dedicated to sharing his expertise and insights with his readers.



Updated on April 24, 2024