The Ultimate Guide to Understanding P0028 Subaru Code

Hello there, fellow Subaru enthusiasts! Are you having trouble with your check engine light? Is your dashboard showing P0028 Subaru code? Well, you’ve come to the right place! This article will serve as your ultimate guide to understanding this specific OBD-II code and help you diagnose the root cause of the problem.

Subaru check engine light

Being a proud owner of a Subaru vehicle, you already know how impressive its engineering and performance are. But even the most reliable car has its own set of problems, such as the dreaded check engine light that pops up on your dashboard. The P0028 code is one of the most common issues reported by Subaru drivers, and it’s essential to know what it means before you take your car to the mechanic or attempt any DIY fixes.

All You Need to Know About the P0028 Subaru Code

Understanding the P0028 Code

At some point in time, your Subaru may display the P0028 engine code, which indicates a problem with the engine’s intake camshaft position. The P0028 code is a diagnostic trouble code that operates with the engine’s powertrain control module (PCM) to monitor the system’s performance. It is quite common in Subaru vehicles and requires immediate attention from a certified mechanic.

When the P0028 code appears, it means that the intake camshaft timing for Bank 2 is not functioning correctly. The intake camshaft is responsible for ensuring that the engine’s air-fuel ratio is at an optimal level for combustion. When the timing is off, it affects the engine’s performance, fuel economy, and emissions.

Possible Causes of the P0028 Code

Several issues can cause the P0028 code to appear. Some of the most common causes include:

1. Faulty camshaft position sensors: The camshaft position sensor is responsible for transmitting signals to the PCM to ensure the proper timing of the camshaft. When the sensor is damaged or faulty, it can send inaccurate signals, causing the camshaft to operate at incorrect timing.

2. Worn timing chain: Over time, the timing chain can wear out, stretch, or become damaged. When this happens, the intake camshaft timing becomes inconsistent, leading to the P0028 code’s appearance.

3. Issues with the engine oil pressure: The engine oil is vital in ensuring that the timing chain and camshaft operate optimally. When the oil pressure is low, it can cause the timing chain to loosen, leading to inconsistencies in camshaft timing.

Diagnosing and Fixing the P0028 Code

If you suspect your Subaru has the P0028 code, the first thing to do is to take it to a certified mechanic. They will run diagnostic tests using specialized equipment to determine the cause of the problem. Once they have identified the problem, they will recommend a course of action to fix it.

In some cases, fixing the P0028 code may involve replacing parts such as the camshaft position sensor, timing chain, or oil pressure switch. The exact course of action will depend on the underlying cause of the code.

Preventing the P0028 Code

To prevent the P0028 code from appearing, it is essential to take proper care of your Subaru’s engine. Regular maintenance, including oil changes, filter replacements, and tune-ups, can go a long way in ensuring your engine operates at optimal levels. Additionally, be sure to follow the manufacturer’s guidelines when using aftermarket parts to prevent compatibility issues that could cause engine problems.

In conclusion, the P0028 code is an essential aspect to keep an eye on in your Subaru vehicle. Regular maintenance and timely repairs by certified mechanics can help you avoid costly repairs and keep your engine running in top condition.

Symptoms of a P0028 Code

Having a P0028 code in your Subaru vehicle could cause several symptoms that could signify issues within your engine. Here are some of the most common symptoms that you might experience:

Loss of Power

When your engine is having trouble taking in the appropriate amount of fuel, it can force your car to lose power. This can make your engine feel sluggish when you try to accelerate, and it can be an indication of a P0028 code.

The variable valve timing (VVT) system of your Subaru works to enhance its performance and fuel efficiency. When it is not functioning as it is supposed to, it can affect your car’s performance and acceleration. If there is a problem in your VVT system and you experience this symptom, you might want to check for a P0028 code to see if it is the culprit.

Illuminated Check Engine Light

The first thing you might notice when you have a P0028 code is the illuminated check engine light on your dashboard. This light immediately comes on when the engine control module (ECM) detects an issue with the variable valve timing (VVT) system.

If you see the check engine light come on, it is recommended that you get your Subaru vehicle checked by a mechanic as soon as possible. The ECM can sense if there is a problem with the VVT system, but it cannot tell you what the exact issue is. A mechanic would have to diagnose the problem and perform the necessary repairs.

Irregular Engine Noises

Action sounds that are heard from the engine in your Subaru can provide important clues about its condition. You might hear irregular noises if there is difficulty with your car’s VVT system because the intake and exhaust valves are not retracting or extending at the appropriate times. If this happens, it can make the engine excessively loud and cause the car to shake.

You might notice a strange ticking sound when the engine has a P0028 code, for example. This ticking indicates an issue with the camshaft timing. The problem might cause noise in the engine coming from loose chains, broken guides, and faulty tensioners of the chain drive system. Noise from the timing system chain components is a sign of corrosion and wear, which results from bad oil flow to these components.

If you hear unusual engine noises and your car has a P0028 code, you should see a qualified mechanic to have it checked as soon as possible. They can offer professional insight into the cause of the issue, and perform the necessary repairs or replacements.

Having an error code like P0028 in your Subaru vehicle is an indication that there may be issues with your engine’s variable valve timing system. It is important to pay attention to the symptoms that your vehicle presents and take it to a mechanic as soon as possible. Repairing the problem immediately can help to save you money on costly repairs that might arise from waiting too long.

Preventing the P0028 Code

If you own a Subaru, you might have come across the P0028 code. This code indicates that there is an issue with the intake valve control circuit’s performance in the engine’s second bank. The issue can lead to incorrect engine timing, and if not addressed promptly, it can result in significant engine damage. While there might not be a foolproof way to prevent this code from popping up, there are some preventive measures you can take.

Regular Maintenance

One of the best ways to prevent the P0028 code is by following a regular maintenance schedule. A good maintenance schedule for your vehicle should include regular oil changes and inspections. During an inspection, a mechanic can quickly identify any issues that may trigger the code and fix them before they escalate. The mechanic can also check for wear and tear on parts, such as the timing belt or chain, that can cause issues with engine timing. Additionally, keeping your engine’s fluids clean can help prevent gunk and debris from building up, which can block the engine’s oil passages and lead to engine performance issues.

Addressing Issues Early

If you notice any unusual noises or a decrease in power, it’s important to get your vehicle checked by a mechanic as soon as possible. These symptoms may indicate that there is an issue with your engine’s performance that could result in the P0028 code triggering. By getting these issues resolved quickly, you can prevent further damage to the engine and save yourself from costly repairs.

Using Quality Parts

When repairing your engine, it’s important to use high-quality parts to help prevent recurring issues and the appearance of the P0028 code. Using low-quality parts might seem like a good way to save money initially, but they may not have the same durability or longevity that higher quality parts have. Using high-quality parts might seem pricey, but they can help prevent future issues, reduce repair costs, and save time, ensuring your Subaru runs smoothly for longer.

In conclusion, preventing the P0028 code requires a combination of regular maintenance, addressing engine issues quickly, and using high-quality parts. These preventive measures may help mitigate the possibility of the P0028 code triggering, keeping your Subaru running smoothly and efficiently for years to come. Remember, if you’re not sure about how to maintain or repair your Subaru, consult a certified mechanic who can help guide you through the process and ensure your vehicle stays in tip-top shape.

Until Next Time

It is our pleasure to share our knowledge and experience on understanding P0028 Subaru Code with you. We hope this article has been useful for you in diagnosing and fixing the issue with your Subaru. If you’re still facing difficulties, don’t hesitate to seek professional help. It’s always better to be safe than sorry.

Thank you for reading our article. We hope you enjoyed it and learned something new today. Don’t forget to bookmark our page for more informative articles on Subaru troubleshooting, repairs, and maintenance. See you soon!


Q: What is the P0028 code in Subaru?

A: P0028 code in Subaru indicates a problem with the Variable Valve Timing (VVT) system.

Q: What causes the P0028 code in Subaru?

A: The P0028 code in Subaru is usually caused by the VVT system’s malfunctioning components such as the camshaft phaser, solenoid valve, oil control valve, or camshaft sensor.

Q: How do I diagnose the P0028 code in Subaru?

A: The P0028 code diagnosis involves checking the VVT system’s components using a scan tool, multimeter, and visual inspection. It’s recommended to seek professional help if you’re not comfortable with the diagnosis process.

Q: Can I drive my Subaru with the P0028 code?

A: It’s not recommended to drive your Subaru with the P0028 code as it can cause further damage to the engine and affect its performance and fuel efficiency.

Q: How much does it cost to fix the P0028 code in Subaru?

A: The cost of fixing the P0028 code in Subaru depends on the severity of the issue and the location of the repair shop. On average, it can range from $300 to $1500.

Q: Is the P0028 code covered under Subaru’s warranty?

A: It depends on the vehicle’s age, mileage, and warranty coverage. It’s recommended to check the warranty details and contact your nearest Subaru dealership for more information.

Q: How often should I service my Subaru?

A: It’s recommended to service your Subaru every 6 months or 10,000 km, whichever comes first. Regular maintenance and timely repairs can prevent expensive breakdowns and enhance the vehicle’s lifespan.

Q: Can I reset the P0028 code in Subaru using an OBD-II scanner?

A: Yes, you can reset the P0028 code in Subaru using an OBD-II scanner. However, it’s recommended to diagnose and fix the underlying issue before resetting the code.

Q: How long does it take to fix the P0028 code in Subaru?

A: The time required to fix the P0028 code in Subaru depends on the severity of the problem and the availability of the replacement parts. It can range from a few hours to a couple of days.

Q: Can I prevent the P0028 code in Subaru?

A: Yes, you can prevent the P0028 code in Subaru by following the manufacturer’s recommended maintenance schedule, using high-quality engine oil, and avoiding rough driving habits. Regular inspections of the VVT system can also prevent the code from occurring.