P0239 Code - Turbocharger/Supercharger Boost Sensor 'B' Circuit Malfunction

What Does P0239 Mean?

OBD-II Code Decreased engine performance is defined as a Turbocharger/Supercharger Boost Sensor "B" Circuit

The Boost Pressure Sensor tells the engine control module (PCM) how much boost is actually being created by the turbocharger. When PCM detects an incorrect signal from the Boost Pressure Sensor, the PCM will set code P0239.

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What are the common causes of P0239 ?

• Faulty IMRC actuator relay (if equipped)
• A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
• Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

How do you troubleshoot P0239 ?

• Replacing the boost sensor if it is not giving the correct input pressure reading to the ECM
• Repairing or replacing the hoses and connections to the turbo boost sensor if kinks or blockage of the lines are present
• Repairing the wiring to the sensor or replacing the connection

Searches related to P0239 - Turbocharger/Supercharger Boost Sensor 'B' Circuit Malfunction

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