P0871

Symptom: P0871-OD PRESSURE SWITCH SENSE CIRCUIT

When Monitored and Set Condition:

When Monitored: Whenever the engine is running.

Set Condition: The DTC is set if one of the pressure switches are open or closed at the wrong time in a given gear.

POSSIBLE CAUSES
- RELATED TCM POWER INPUT DTCS PRESENT
- OD PRESSURE SWITCH SENSE CIRCUIT OPEN
- OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
- TRANSMISSION RELAY OUTPUT CIRCUIT OPEN
- OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
- OD PRESSURE SWITCH
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS

Test 1:

Test 2 - Test 6:

Test 7 - Test 9:

Test 10 - Test 11: