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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 42RLE)) >> DTC Troubleshooting >> P0871-Od Pressure Switch Rationality >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes 
RELATED TIPM TCM POWER INPUT DTCS PRESENT
LOSS OF PRIME DTC PRESENT
(T9) OD PRESSURE SWITCH Sensor CIRCUIT OPEN
(T9) OD PRESSURE SWITCH Sensor CIRCUIT SHORT TO GROUND
(T9) OD PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE
TRANSMISSION SOLENOID/PRESSURE SWITCH ASSEMBLY
POWERTRAIN CONTROL MODULE

Always perform the 42RLE Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  . 

PRESSURE SWITCH STATES

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