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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 852 (DTCS P0218 To P0870 - 65RFE Automatic Transmission - 1500) >> Diagnosis And Testing >> P0841-LR Pressure Switch Rationality >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
LOSS OF PRIME AND/OR TCM POWER INPUT DTCS PRESENT
LOW FLUID LEVEL
LOW LINE PRESSURE
REVERSE CARRIER SNAP RING DISLODGED
CRACKED OR MISINSTALLED PRIMARY OIL FILTER OR FILTER SEAL
STICKING MAIN REGULATOR VALVE IN PUMP VALVE BODY
NO. 1 CHECK BALL CUT OR DAMAGED
WIRING AND CONNECTORS
L/R PRESSURE CONTROL CIRCUIT OPEN
L/R PRESSURE CONTROL CIRCUIT SHORTED TO GROUND
L/R PRESSURE CONTROL CIRCUIT SHORTED TO VOLTAGE
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Transmission PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to 65RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .