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P051B - Crankcase Pressure Sensor Circuit Range/Performance

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DTC DESCRIPTION P051B - CRANKCASE PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE

Description:  This DTC sets when the crankcase pressure sensor is greater than or less than an expected value for the current operating conditions.
Possible Causes: 
  • Crankcase pressure sensor is not within a calibrated range during key ON, engine OFF
  • Crankcase pressure sensor voltage indicates high pressure
  • Crankcase pressure sensor voltage indicates high vacuum at low airflow
  • Leak in the positive crankcase ventilation (PCV) system
  • Damaged crankcase pressure sensor
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test HG.
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