Error Code P004C: What It Means & What To Do?

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Is your car major some major issues with its turbocharger/supercharger? If YES, then there are a lot of chances that your car may experience OBD II error code P004C. A boost control solenoid is used by the engine control module so that it can control the turbocharger. This also helps to provide the boost which is requested. If any sort of incorrect signal from the boost control solenoid is detected by the PCM, then it would result in P004C fault code.

You will be surprised to know that this code would trigger when the PCM would not receive signals from the boost control solenoid. The other reason which makes it appear is that the signal which comes from the boost pressure sensor may not be within the factory specifications.

What causes this problem with the Turbo/Supercharger Boost Control B Circuit Low?

• Defective boost pressure/ turbocharger position sensor
• Failure in the turbocharger/supercharger
• Flawed control solenoid
• Issues with the wiring
• Inoperative power control module 

1. Turbocharger/supercharger - A lot of issues can arise do to defective turbocharger/supercharger. Did you just see P004C code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
2. Turbocharger position sensor - Faulty boost pressure/ turbocharger position sensor can be the reason why P004C code is flashing. Visit us to purchase top notch turbocharger/supercharger online.
3. Boost control solenoid - Your turbocharger is perfectly good, but still P004C code triggering up? Visit us to purchase it at affordable prices.
4. Powertrain Control Module - It is an important auto part which needs full care. A faulty PCM can be a reason behind the flashing up of P004C code.

Willing to know some common symptoms of OBD Trouble Code P004C? Your wish is our demand. Have a look at them below:

Common Symptoms

• Illumination in the Check Engine Light
• Vehicle boost is over or under factory specifications
• Engine would lack in power
• Increase in the amount of fuel consumption
• Unusual noises coming from the engine bay
• Black smoke coming out of the exhaust pipes

Learn the ways with which you can correct this trouble code:

• Fix if there are any vacuum leaks
• If the air filter is dirty replace it
• Replace wastegate
• The intercooler should be replaced
• Make sure the connections on the intake and exhaust side of the turbo are airtight
• Replace boost sensor
• IF there are any defects in the turbocharger/supercharger, then you must replace it
• Repair or replace bad wiring in the circuit
• Replace the Powertrain Control Module

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of Powertrain Control Module, Supercharger, Turbocharger and a lot more. We are sure that now all your issues would be resolved.

Have a look at the procedure which would help you to easily diagnose the P004C error code. The main reason behind the flashing up of this code is that the PCM is not receiving signals from the boost control solenoid. The other reason can be that the signal provided from the boost pressure sensor may not be as per the factory specifications.

The first and foremost thing which should be done is to check the circuit by testing the power as well as ground at the solenoid. Then you must carefully check the turbocharger/supercharger by removing the intake to check if there is any sort of damage or debris. If you find any sort of debris, then the best option would be to replace the unit. Then the pressure sensor should be tested. There must be three wires going through the position sensor: power, ground and signal.