What does P0842 Mean? The PCM has detected an abnormality in the transmission fluid pressure sensor circuit. The computer controlled automatic transmission uses varying degrees of hydraulic pressure to provide shift actuation and torque converter lockup. Pressure is regulated using one or more electronic pressure control solenoids which are controlled by the PCM. engine code P0842P0842 fixobd P0842dtc P0842obd code P0842obd2 P0842P0842 car codediagnostic code P0842car code P0842check engine code P0842fehlercode P0842P0842 fiatcodigo P0842codigo falla P0842P0842 kody b??dówcodigo de falla P0842 What are the common causes of P0842 ? Some aftermarket accessories and performance modifications A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area. A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture. How do you troubleshoot P0842 ? The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P0842 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired. Searches related to P0842 - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low transmission fluid pressure sensor/switch a circuit high p0842 honda pilot p0842 chevrolet p0842 chevy cobalt p0842 chevy impala cobalt transmission fluid pressure sensor allison transmission code p0842 transmission fluid pressure sensor location
