Guide To P0034 OBD Error Code Solutions

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If you are hearing that hissing noise from the boost leak or experiencing fall in the engine performance and power, then the chances are that there is some problem with your vehicle’s turbocharger bypass control circuit. It might be low or high. In case its low, OBD error code P0034 will be set by your vehicle’s PCM (Powertrain Control Module).

This OBD error code P0034 will be set by your vehicle when there will be some problem with turbocharger bypass system such as not releasing enough pressure or no pressure at all. Your vehicle’s powertrain control module will detect that there is some problem with the bypass system when it receives abnormal voltage signals from the boost controller circuit. Wondering what can be the causes behind this issue? Have a look at the points below.

What causes this problem with the Turbocharger Bypass Valve Control Circuit Low?

• Faulty or damaged one or more engine components
• Issues with turbocharger bypass valve
• Vacuum lines - damaged or leaking
• Problems with the boost pressure sensor
• Engine wiring harnesses - corroded or broken
• Issues with Powertrain Control Module

1. Intake Throttle Valve - If you are facing OBD error code P0034, chances are that something is wrong with your throttle body and hardware. If you wish to correct this problem, you can shop high end throttle bodies and related parts with us.
2. Powertrain Control Module - Powertrain control module also commonly known as the PCM, is one of the causes behind this issue if damaged. So why not change it?
3. Turbocharger/Supercharger - We have in stock high end turbocharger and supercharger for every make and model on the Canadian road. You can shop them from us at most budget friendly prices.
4. Boost Pressure Sensor - We also have in stock top quality boost pressure sensors and solenoids if you need them to fix this OBD error P0034.
5. Vacuum Line - if you need to fix obd error code P0034, you might need top quality vacuum lines which you can easily find with us at best possible prices.
6. Diagnostic Tools - If you want to be that perfect DIY guy, all you need is perfect DIY tools. Where can you find them? Nowhere else than PartsAvatar.
7. Intercoolers - Need intercoolers to fix the problem? Just browse through our website and get sorted. We have in stock best intercoolers for every make and model.

Interested in knowing the symptoms of this code? Have a look at the points that we have listed out below.

Common Symptoms

• Illumination of check engine light will
• Declined or fall in engine power
• Annoying rattle noises from the turbocharger
• Boost leak causing hissing noise
• Excessive boost pressure or lack of boost pressure
• Exhaust system releasing excessive smoke

Once you know that you have a problem with your vehicle, you simply can’t relax and sit back. You need to get it fixed and in order to get it fixed, you need to follow few instructions. We have listed out few steps here that you need to follow if you want to correct this OBD error code P0034.

The first and the foremost step to correct any problem should be to get a certified technician to verify the code with a scanner, reset the fault codes, and perform a road test.

Now, if after the test the P0034 code returns, then follow this test procedure:

• You will need to perform a pressure test on the intakes system between the turbocharger/supercharger and intake throttle valve. This will help you to check if the pressure is low or high against the manufacturer’s specifications.
• Now if the pressure is low, you will need to check for cracks or damage in the intake hoses, intercooler, pipes and clamps. If you find them to be in best condition then check the bypass valve to determine if it is open (slightly or completely) allowing boost pressure to escape.
• In case you find that the pressure is in the normal range, then pressure sensor is faulty and needs to be replaced.

If you really wish to correct these damaged parts and get rid of this obd error code P0034, you will definitely need new parts that are genuine and of high quality. Right? Not to worry! You can easily find them with us at PartsAvatar. So what are you waiting for? Grab your dream parts today!

Diagnosing a problem correctly is extremely important and if you wish to diagnose the issues your vehicle is facing, you will need to follow certain steps. If you wish to check whether your vehicle is facing obd error code P0034 or not, you will need to follow these simple steps

• First and foremost, step is to get a mechanic to verify the code with the help of an OBD-II scanner
• Next, you need to conduct a boost pressure test on the basis of the manufacturer. Check whether boost pressure sensor is within the manufacturer’s range of not.

Also, remember that the bypass valves are operated differently depending on the manufacturers. Some are spring operated especially the Asian models.

Common Mistakes When Diagnosing The P0034 Code

Common mistake that you are likely to commit while diagnosing this error code is that of assuming that the basic components are operating as normal. Often the problem is just because of a loose clamp causing a loss of pressure. But you might end up replacing other parts like turbocharger, if not properly diagnosed.

In case your vehicle has an intercooler, we recommend you to check for leaks in case the pressure gauge indicates low output. Chances are that the turbocharger or supercharger may be bad due to worn bearings, vanes, or is operating out of specification.