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Home >> Dodge and Ram >> 2009 >> Durango Base, 4.7 P, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 42RLE) >> DTC Troubleshooting >> P0871-Od Pressure Switch Rationality >> Possible Causes
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Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes 
RELATED DTCS PRESENT
LOSS OF PRIME DTC PRESENT
(T9) OD PRESSURE SIGNAL CIRCUIT OPEN
(T9) OD PRESSURE SIGNAL CIRCUIT SHORT TO GROUND
(T9) OD 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
OPEN OPEN OPEN
OPEN OPEN CLOSED
OD  OPEN CLOSED CLOSED
2nd  OPEN CLOSED OPEN
1st  CLOSED OPEN OPEN