P003B OBD Error Code: Problem & Solutions

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Is P003B error code and check engine light flashing? Is your car showing poor performance? Experiencing few problems with your vehicle ECM? Well it's high time you understand your vehicle better and obd error code P003B. It's the time to help your Turbocharger/Supercharger to be in its best condition again.

Ever wondered what this P003B code depicts? What is your vehicle trying to convey you? P003B error code is a generic OBD code that indicates that your vehicle’s turbocharger and supercharger boost control “B” Position is exceeding it learning limit or is not within its desired range. In other words, we can also say that there is some fault within the boost control system.

What causes this problem with the Turbocharger/Supercharger Boost Control “B” Position?

• The boost control solenoid of your vehicle might be broken or bent causing this error.
• The Corroded connectors, pins and grounds can become another reason for this issue.
• Frayed, open wirings or short of power can cause this issue.
• ECM (Engine Control Module) internal issues might be another common cause.
• Also, the exhaust system of your vehicle might have some issues such as exhaust leaks, incorrect boost levels that can too cause this obd error P003B.
• There might be some internal issues with boost control module, that will become another possible cause behind this error code P003B

1. Turbocharger or Supercharger - P003B code indicates issues with vehicle’s turbocharger or supercharger. So, it will definitely be a good idea replace the defective ones with brand new ones.
2. Turbo Boost Control Solenoid - You might also have to replace the damaged turbo boost control solenoid to get rid of this issue.
3. Exhaust Parts - You might need few exhaust parts too fix this problem. You can easily find them with us at best prices.
4. Wiring Harness - Just replace the broken or damaged wiring harnesses to solve the issue completely.
5. Diagnostic Tool - In order to be that DIY guy, you need to few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come handy to do so, so why not have a look?
6. Engine Control Module - Looking for ECM? You can simply browse through PartsAvatar Canada and get your hands on the best selection of parts available.
7. Boost Control Module - if you are facing P003B error code with your turbocharger boost control “A” position then you will need Boost Control module for your vehicle.
8. Throttle Body - You might need throttle body and hardware parts to get rid of the issue as the chances are, they might be damaged.
9. Powertrain Control Module - error code P003B might also damage the PCM of your vehicle. You can find powertrain control module with us.

After knowing all the cause behind the issues, let’s have a look at few common symptoms of this problem. Read through this section to learn more about this error code.

Common Symptoms

• Erratic or abnormal power levels might be experienced
• Your vehicle might start showing poor drivability symptoms
• Your vehicle’s throttle body will start giving decreased responses
• You might experience trouble driving up hills
• Vehicle may enter the Limp mode 

Definitely the next step after understanding your vehicle’s problem is to fix it and n order to correct this OBD Code P003B you will need to undergo the following steps and might need the following parts.

• You will need to replace the damaged wiring harnesses.
• You might also need to repair the exhaust leak after diagnosing the damaged exhaust parts or the reason behind the leak.
• Undergo Powertrain Control Module replacement.
• Considering the problem is with the turbocharger or supercharger you will need to get rid off the damaged part with a new one as soon as possible.
• Next, you will need to adjust the Turbocharger/Supercharger vanes to proper specifications
• In case the problem persists and you need parts to get rid off this problem completely, then we are here to help you out. We have stocked a wide range of best priced parts to help you out in fixing your car.

In order to be that DIY guy and to be able to diagnose your vehicle’s problem yourself you will need to keep in mind the following precautions

• Take into consideration that the forced induction system generates a dangerous amount of heat and can potentially burn your skin.
• If you can manually move the lever from the solenoid to the charger housing, you can consider that as a good in sign
• Take care of the charger components, DO NOT damage them as they are quite expensive.
• Pay proper attention to the harnesses going to the boost solenoid, it might be really hot.

Common mistakes when diagnosing the P003B code

• Few of the common mistakes that you can commit while diagnosing this P003B generic obd codes are listed as follows:
• One of the common mistakes you are likely to make is that of failing to verify the P003B OBD Error Code.
• Also, another mistake could be failed inspection of the turbocharger or supercharger
• Not clearing the P003B code after making repairs is another common mistake that many are likely to commit.

P003A - Turbocharger/Supercharger Boost Control "A" Position Exceeded Learning Limit