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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 68RFE Automatic Transmission)) >> Diagnosis and Testing >> P0841-LR Pressure Switch Rationality >> 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 
LOSS OF PRIME AND/OR TIPM DTC PRESENT
LOW FLUID LEVEL
LOW LINE PRESSURE
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
(T50) L/R PRESSURE SWITCH SENSE CIRCUIT OPEN
(T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORTED TO GROUND
(T50) L/R PRESSURE SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)
REAR ANNULUS GEAR DRIVE SHELL SNAP RING DISLODGED

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  68RFE PRE-DIAGNOSTIC TROUBLESHOOTING 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
3RD  OPEN OPEN CLOSED CLOSED OPEN
4TH  OPEN OPEN OPEN CLOSED CLOSED
5TH  OPEN OPEN CLOSED OPEN CLOSED
6TH  OPEN CLOSED OPEN OPEN CLOSED
*L/R is closed if output speed is below 100 RPM in Drive. L/R is closed in Manual (ERS) 1st.
**May be open when rolling in Neutral or at low oil temperatures.