Replacing the ECM if it got shorted internally, and repairing the cause of the shortĪdditional comments for consideration regarding the P0238 codeĬode P0238 is triggered when the intake boost sensor circuit shorts to power or opens completely, causing the signal to the ECM to go way over, or below voltage specifications. Replacing the broken connectors causing the shorted or open circuits
Repairing the wiring harness if any shorts are found, and securing the harness from getting damaged Replacing the boost sensor if it is shorted internally and not giving the correct input pressure reading to the ECM If the ECM gets burned out, then the vehicle may stall and not start.
99 C230 KOMPRESSOR SPECS ROCKER COVER CODE
Try disconnecting the sensor to see if the short to power and code goes away or changesĬheck the harness for melting from loose or hanging wire looms on the exhaustĪ short to a power source in the sensor circuit can cause the ECM to get internally burned out if the circuit short goes over 5 volts. Scans codes and documents the freeze frame data in order to verify the problemĬlears the codes to verify whether the concern comes backĬhecks the operation of the boost pressure sensor signal and compares it to the MAP sensor at engine idle to see if the readings are the sameĬhecks the turbo boost sensor wiring and connector for any signs of shorts to power in the harnessĬhecks the turbo boost sensor connector for corroded pins that may cause shorting of power in the signal circuitĬompares readings to specifications on the sensor data scanĬommon mistakes when diagnosing the P0238 code?įollow these simple guidelines to prevent misdiagnosis:
How does a mechanic diagnose the P0238 code? The engine turbo boost may be turned off by the ECM and the engine will lack power (during acceleration) The Check Engine Light will be illuminated and code set The turbo boost pressure sensor A wiring is shorted to power between the sensor and the ECM The turbo boost pressure sensor A connector is damaged, causing an open circuit Turbo boost pressure sensor internally open circuit P0238 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost pressure sensor A input circuit out of specifications, indicating an open circuit or high voltage condition in the circuit. Turbocharger Boost Sensor A Circuit High What the P0238 code means
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