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Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> (Powertrain Control Module (Pcm) - Electrical Diagnostics - 545RFE Automatic Transmission) >> DTC Troubleshooting >> P0846-2C Pressure Switch Rationality >> Possible Causes

Possible Causes

Possible Causes 
RELATED DTCS PRESENT
(T147) 2C PRESSURE SIGNAL CIRCUIT OPEN
(T147) 2C PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND
(T147) 2C PRESSURE SIGNAL CIRCUIT SHORTED TO OTHER CIRCUITS
EXCESSIVE FLUID LEAKAGE IN 2C CLUTCH CIRCUIT
NO. 5 AND/OR NO. 7 CHECK BALL CUT OR DAMAGED
EXTRA CHECK BALL DOWNSTREAM OF THE NO. 7 CHECK BALL POCKET
LOW LINE PRESSURE
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)
WIRING AND CONNECTORS

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  . 

GEAR  L/R  2C  4C  UD  OD 
REVERSE  OPEN OPEN OPEN OPEN OPEN
P/N  CLOSED** OPEN OPEN OPEN OPEN
1ST  CLOSED* OPEN OPEN CLOSED OPEN
2ND  OPEN CLOSED OPEN CLOSED OPEN
2ND PRIME  OPEN OPEN CLOSED CLOSED OPEN
3RD  OPEN OPEN OPEN CLOSED CLOSED
4TH  OPEN OPEN CLOSED OPEN CLOSED
5TH  OPEN CLOSED OPEN OPEN CLOSED
*L/R is closed if output speed is below 100 RPM in Drive and Manual 2. L/R is closed in Manual 1.
**May be open when rolling in Neutral or at low oil temperatures.