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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1139 (DTCS P0871 To U1449 - 65RFE Automatic Transmission - 1500) >> DTC Troubleshooting >> P0876-UD Pressure Switch Rationality >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2016 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
RELATED RELAY DTCS PRESENT
LOW FLUID LEVEL
NO. 2 CHECK BALL CUT OR DAMAGED
LOW LINE PRESSURE
CRACKED OR MIS-INSTALLED SUMP FILTER OR SEAL
LOOSE COOLER RETURN SPIN ON FILTER (IF EQUIPPED)
STICKING MAIN REGULATOR VALVE IN PUMP VALVE BODY
UD PRESSURE SIGNAL CIRCUIT OPEN
UD PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND
UD PRESSURE SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUITS
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  .