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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1611 (5.7L - DTCS P0521 To P1414 - 2500 Hd) >> DTC Troubleshooting >> P0521-Engine Oil Pressure Sensor Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ENGINE OIL/ENGINE MECHANICAL
5-VOLT SUPPLY CIRCUIT OPEN OR SHORTED TO GROUND
HIGH RESISTANCE IN THE OIL PRESSURE SENSOR SIGNAL CIRCUIT
HIGH RESISTANCE IN THE SENSOR RETURN CIRCUIT
ENGINE OIL PRESSURE SENSOR
POWERTRAIN CONTROL MODULE (PCM)

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