Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Dodge and Ram >> 2009 >> Durango Base, 3.7 K >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Powertrain Control Module (Pcm) - Electrical Diagnostics - 42RLE >> DTC Troubleshooting >> P0841-LR Pressure Switch Rationality >> Possible Causes

Possible Causes

Possible Causes 
RELATED DTCS PRESENT
LOSS OF PRIME DTC PRESENT
(T50) L/R PRESSURE SIGNAL CIRCUIT OPEN
(T50) L/R PRESSURE SIGNAL CIRCUIT SHORT TO GROUND
(T50) L/R PRESSURE SIGNAL CIRCUIT SHORT TO VOLTAGE
TRANSMISSION SOLENOID/PRESSURE SWITCH ASSEMBLY
POWERTRAIN CONTROL MODULE

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

PRESSURE SWITCH STATES

GEAR  L/R  2/4  OD 
P/N  CLOSED OPEN OPEN
R  OPEN OPEN OPEN
D  OPEN OPEN CLOSED
OD  OPEN CLOSED CLOSED
2nd  OPEN CLOSED OPEN
1st  CLOSED OPEN OPEN