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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (6.7L Diesel - DTCS P0402 To P1CEF - 2500 & 3500) >> Diagnosis and Testing >> P051C-Crankcase Pressure Sensor Circuit Low >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(K926) CRANKCASE PRESSURE SIGNAL CIRCUIT SHORTED TO THE (K916) SENSOR RETURN CIRCUIT
(F857) 5-VOLT SUPPLY CIRCUIT SHORTED TO THE (K916) SENSOR RETURN CIRCUIT
(K926) CRANKCASE PRESSURE SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
(F857) 5-VOLT SUPPLY CIRCUIT OPEN/HIGH RESISTANCE
(K926) CRANKCASE PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND
(F857) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
CRANKCASE PRESSURE SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  .