OBD II Fault Code

  • OBD II P051B

    OBD-II Code Oil leaking from the engine is defined as a Crankcase Pressure Sensor Circuit Range/Performance

    The Crankcase Pressure Sensor tells the engine control module (PCM) how much pressure is building up inside the engine. If the PCM detects an incorrect signal from the Crankcase Pressure Sensor, the PCM will set code P051B.

    Oil leaking from the engine Symptoms

    • Oil leaking from the engine

    Common Problems That Trigger the P051B Code

    • Crankcase pressure sensor failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

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