P051D

DTC P051D, sometimes indicated as P051D00 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the engine idling stability causing crankcase pressure sensor circuit high.

This DTC code is set when the PCM detects a high voltage (above 4.8 volts) on the crankcase pressure sensor circuit. This can be caused by a number of things, including a defective crankcase pressure sensor, a shorted or open circuit in the wiring or connector, or a PCM problem.
If the crankcase pressure sensor is defective, it will need to be replaced. If there is a short or open in the wiring or connector, the wiring or connector will need to be repaired or replaced. If the PCM is defective, it will need to be replaced.

• P051D: Crankcase Pressure Sensor Circuit High
• P051D: Crankcase pressure sensor – circuit high
• P051D 00: Crankcase pressure sensor - circuit high