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P0235 is a diagnostic trouble code (DTC) for "Turbocharger Boost Sensor A Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $50.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
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Turbocharger Boost Sensor A Circuit Malfunction
P0235 is an OBD-II generic code that is triggered when the Engine Control Module (ECM) detects intake boost pressure sensor A input malfunction when compared to the manifold pressure sensor (MAP) at idle, and with the key turned on before starting the engine.
The turbo boost sensor and the MAP sensor do not correlate the same reading with the engine at idle and when the key is on and the engine is off.
The turbo boost pressure sensor A is contaminated or clogged
The turbo boost pressure sensor A is slow to respond to changing pressure
The Check Engine Light will be illuminated and the P0235 code set in ECM memory
The engine turbo boost may be turned off by the ECM and the engine will lack power
The engine may lack some power during acceleration if the boost sensor is failing to register the correct amount of boost pressure
Follow these simple guidelines to prevent misdiagnosis:
Replacing the boost sensor if it is not giving the correct input pressure reading to the ECM
Repairing or replacing hoses and connections to the turbo boost sensor that have kinks or blockage of the lines
Code P0235 is triggered by the intake boost sensor indicating a malfunction condition of which the ECM cannot determine the cause. The most common failure is with the boost sensor.
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