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06 Subaru Forester P0026 P0028 with Engine Noise: Simple Causes and Fixes

06 Subaru Forester P0026 P0028 with Engine Noise: Simple Causes and Fixes

If you’re driving a 2006 Subaru Forester and you notice a strange engine noise, followed by P0026 or P0028 codes, don’t panic. While these codes sound complicated, they point to some common issues that can usually be fixed without too much trouble. In this article, we’ll explain everything you need to know about these engine codes and noises in a way that’s easy to understand. By the end, you’ll know what might be wrong with your car and how to get it fixed.

What Are the P0026 and P0028 Codes?

If you’ve noticed engine noise in your 06 Subaru Forester, your car’s computer might also show error codes P0026 or P0028. These codes are a way for your car to tell you that something isn’t working correctly. But what do these codes mean?

This code shows there’s a problem with the intake valve control solenoid circuit in the car’s engine (in Bank 1).

This is similar to P0026 but happens in a different part of the engine (Bank 2).

Both of these codes deal with the variable valve timing system, or VVT. This system controls how the intake valves in the engine open and close, making sure the engine runs smoothly and efficiently. When something goes wrong with the VVT system, it can cause engine noise and affect how your car drives.

If you’re curious about other Subaru Forester maintenance tips, check out my blog on whether the 2015 Subaru Forester has an oil life monitor here.

Symptoms of P0026 and P0028 Codes in Your 06 Subaru Forester

If your Subaru Forester has triggered P0026 or P0028 codes, you’ll probably notice a few things other than engine noise. These symptoms include:

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Common Symptoms of 06 Subaru Forester P0026 P0028 with Engine Noise

Symptom Description
Weird Engine Noise A ticking or knocking sound might come from the engine.
Check Engine Light Your dashboard will light up with the "Check Engine" warning.
Poor Acceleration Your car might not accelerate as fast as it should.
Rough Idle When your car is sitting still, the engine may seem like it’s struggling to stay running smoothly.

Causes of P0026 and P0028 Codes with Engine Noise

There are a few common reasons why your 06 Subaru Forester might be experiencing engine noise along with the P0026 or P0028 codes. Let’s break down these causes and how they might affect your car.

car-36.2 06 Subaru Forester P0026 P0028 with Engine Noise: Simple Causes and Fixes
A mechanic checking the low oil level with a dipstick in a 2006 Subaru Forester, showing a potential cause of engine noise and error codes P0026 and P0028.

1. Low or Dirty Engine Oil

One of the easiest-to-fix causes of engine noise and the P0026 or P0028 codes is dirty or low oil. Your Subaru’s engine relies on oil to stay lubricated. If the oil is old or too low, it won’t flow properly, and this can cause a lot of problems, including strange engine noises.

Check your oil level and change it if necessary. It’s always a good idea to use high-quality oil recommended for your Subaru Forester. For more on oil-related issues, you might also want to read this blog on oil issues in the 2015 Acura TLX V6 here.

2. Faulty Oil Control Valves (OCV)

The oil control valves (OCV) help control how much oil flows to different parts of the engine. When these valves aren’t working properly, the engine might not get the oil it needs, which can cause the P0026 and P0028 codes to show up. Engine noise can also occur because of this.

If the oil control valves are faulty, they might need to be replaced. This is a common fix for these codes.

3. Clogged VVT Solenoids

The VVT system uses solenoids to control how the intake valves open and close. If these solenoids get clogged with dirt or debris, they won’t work properly, causing engine noise and setting off the P0026 and P0028 codes.

Cleaning or replacing the solenoids can usually solve the problem.

4. Worn Timing Chain

The timing chain keeps everything in the engine running in sync. If the chain is loose or worn out, it can cause strange engine noises and affect how the engine runs, which might lead to the P0026 and P0028 codes.

If the timing chain is the problem, it might need to be replaced. This is a more complex fix and may require a mechanic.

5. Electrical Issues

Sometimes, the problem isn’t mechanical at all. Faulty wiring or bad connections in the engine’s electrical system can also trigger the P0026 and P0028 codes.

Check the wiring and connections to make sure everything is in good shape.

How to Diagnose the Problem

If you’re experiencing engine noise and the P0026 or P0028 codes in your 06 Subaru Forester, you’ll want to find out what’s causing the issue. Here are some steps you can take to diagnose the problem:

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Steps to Diagnose 06 Subaru Forester P0026 P0028 with Engine Noise

Step Description
1. Use an OBD-II Scanner An OBD-II scanner is a tool that connects to your car’s computer and reads the error codes. You can use it to confirm whether P0026 and P0028 are indeed the codes being triggered.
2. Check Your Oil Low or dirty oil can cause these codes to appear. Make sure to check your oil levels and the condition of the oil. If it’s dirty or low, changing the oil might fix the problem.
3. Inspect the Oil Control Valves If the oil level is fine, the next step is to check the oil control valves. These valves are relatively easy to replace if they’re faulty.
4. Look at the Timing Chain If the engine noise continues, the timing chain might be the issue. A worn timing chain can lead to problems with the VVT system, which triggers the P0026 and P0028 codes.
5. Test the Electrical System Check the wiring and connections in the VVT system. Loose or broken wires can sometimes cause these codes to appear, even if everything else is working properly.

Fixes for the P0026 and P0028 Codes with Engine Noise

Now that you know what might be causing the P0026 and P0028 codes in your 06 Subaru Forester, let’s talk about how to fix them.

  1. Oil Change

This is one of the simplest fixes. If dirty or low oil is causing the problem, an oil change could resolve the issue. Be sure to use the correct type of oil for your Subaru Forester, as using the wrong oil can lead to further problems.

car-36.3 06 Subaru Forester P0026 P0028 with Engine Noise: Simple Causes and Fixes
A mechanic replacing the Variable Valve Timing (VVT) solenoids in a 2006 Subaru Forester, highlighting a key fix for P0026 and P0028 codes.
  1. Replace the Oil Control Valves

If the oil control valves are faulty, replacing them is the best solution. You can either replace them yourself if you’re comfortable with car repairs or take your car to a mechanic.

  1. Clean or Replace the VVT Solenoids

If the solenoids are clogged, cleaning them might solve the problem. However, if they’re damaged or too dirty to clean, replacing them might be necessary.

  1. Fix the Timing Chain

A worn timing chain is a bigger issue, but it’s important to fix it as soon as possible. If the timing chain is too loose, it can cause serious damage to your engine. A mechanic can inspect the chain and replace it if necessary.

  1. Repair the Wiring

If electrical problems are to blame for the P0026 and P0028 codes, repairing or replacing the faulty wiring should clear the codes and stop the engine noise.

Preventing P0026 and P0028 Codes in the Future

Once you’ve fixed the P0026 and P0028 codes in your 06 Subaru Forester, you’ll want to prevent them from happening again. Here are a few things you can do to keep your car running smoothly:

Changing your oil on time is one of the easiest ways to prevent engine problems. Follow your car’s maintenance schedule and use high-quality oil to keep your engine in good condition.

Always make sure you’re using the correct oil for your Subaru Forester. Using the wrong type of oil can cause problems with the VVT system, leading to P0026 and P0028 codes.

If you’ve experienced problems with clogged solenoids in the past, it’s a good idea to clean them regularly to prevent debris from building up.

If your timing chain has been an issue before, make sure to have it checked during routine maintenance. A worn timing chain can cause engine noise and other problems, so it’s better to fix it before it gets worse.

Keep an eye on the wiring and connections in your car’s VVT system. If you notice any loose or damaged wires, have them repaired right away.

If you’re interested in other car maintenance topics, I’ve also covered how to replace side speakers in a 2009 Hyundai Sonata here, which might be helpful if you’re thinking about upgrading your sound system.

What Happens if You Ignore P0026 and P0028 Codes?

Ignoring the P0026 and P0028 codes in your 06 Subaru Forester isn’t a good idea. If you continue driving with these codes, the problem could get worse, and your car might start to suffer more serious engine damage. Here are some things that could happen if you don’t fix the issue:

The strange engine noise you hear might get louder or more frequent.

 Your car’s acceleration and overall performance could get worse over time.

Small problems can turn into bigger, more expensive repairs if you ignore them.

In the worst-case scenario, ignoring these codes could lead to complete engine failure, which would require a costly replacement.

For more insights on engine problems, you can check out my detailed blog on coolant loss in the 2012 Jeep Wrangler here.

car-36.4 06 Subaru Forester P0026 P0028 with Engine Noise: Simple Causes and Fixes
2006 Subaru Forester with an overheating engine, showing the consequences of ignoring P0026 and P0028 codes.
FAQ - 06 Subaru Forester P0026 P0028 with Engine Noise

FAQ - 06 Subaru Forester P0026 P0028 with Engine Noise

What do the P0026 and P0028 codes mean in a 06 Subaru Forester? +

The P0026 and P0028 codes refer to problems with the variable valve timing (VVT) system in your Subaru Forester. P0026 indicates an issue in Bank 1, and P0028 refers to Bank 2. These codes can cause engine noise and affect the car’s performance.

Can dirty or low engine oil cause P0026 and P0028 codes? +

Yes, low or dirty engine oil can cause these codes. The VVT system relies on proper oil flow. If the oil is old or low, it can trigger the P0026 and P0028 codes along with engine noise.

How do I fix P0026 and P0028 codes in a Subaru Forester? +

Fixes include checking and replacing the oil, inspecting oil control valves, cleaning or replacing VVT solenoids, and checking the timing chain. Testing the electrical system and fixing any loose wiring may also solve the issue.

Can I keep driving if my 06 Subaru Forester has P0026 or P0028 codes? +

It’s not recommended to keep driving with P0026 or P0028 codes. If left untreated, the engine noise and underlying issues can worsen, potentially causing more severe damage, such as engine failure.

What are common symptoms of P0026 and P0028 codes? +

Common symptoms include engine noise (ticking or knocking), a check engine light, poor acceleration, and a rough idle. These symptoms indicate a problem with the VVT system.

Conclusion

If you’re dealing with engine noise and P0026 or P0028 codes in your 06 Subaru Forester, the problem is most likely related to your car’s VVT system. Whether it’s a simple oil change or a more involved repair like replacing the timing chain, taking care of these issues as soon as possible can save you a lot of trouble down the road.

By following the steps outlined in this article, you should be able to diagnose and fix the problem. Just remember to stay on top of regular maintenance, like oil changes and checking the timing chain, to prevent these codes from coming back.

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