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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (2.0L - DTCS P050B To P054B) >> DTC Troubleshooting >> P051C Crankcase Pressure Sensor "A" Circuit Low >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
5-VOLT SUPPLY CIRCUIT OPEN/HIGH RESISTANCE
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
CRANKCASE PRESSURE SENSOR PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND
CRANKCASE PRESSURE SENSOR PRESSURE SIGNAL CIRCUIT SHORTED TO THE SENSOR GROUND
CRANKCASE PRESSURE SENSOR PRESSURE SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
CRANKCASE PRESSURE SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  2.0L - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .