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P0237 is a diagnostic trouble code (DTC) for "Turbocharger Boost Sensor A Circuit Low". 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 Low
P0237 is an OBD-II generic code that is triggered when the Engine Control Module (ECM) detects the intake boost pressure sensor A input circuit low below specifications, indicating a short to ground.
The turbo boost pressure sensor internally shorted to ground
The turbo boost pressure sensor A connector is damaged, causing a short to ground
The turbo boost pressure sensor A wiring is shorted to ground between the sensor and the ECM
The Check Engine Light will be illuminated and the code set
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 circuit is shorted and cannot input the correct amount of boost pressure to the ECM
Scans codes and documents the freeze frame data in order to verify the problem
Clears the codes to verify whether the concern comes back
Checks the operation of the boost pressure sensor signal and compares it to the MAP sensor
Checks the turbo boost sensor wiring and connector for any signs of shorts in the harness
Checks the turbo boost sensor connector for corroded pins in the connector that may cause shorting of the signal circuit
Follow these simple guidelines to prevent misdiagnosis:
A short in the sensor circuit will cause the ECM to disable the turbo boost until the problem is fixed and the code is cleared.
Replacing the boost sensor if it is shorted internally and not giving the correct input pressure reading to the ECM
Repairing the wiring harness if any shorts are found, and securing the wiring harness from excessive heat
Cleaning or replacing any corroded connections
Replacing a shorted ECM if shorted internally
Code P0237 is triggered by the intake boost sensor circuit shorted signal to the ECM. The most common failure is an internally-shorted boost sensor, or the harness has been shorted on the exhaust manifold.
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