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Symptom: P0871-OD PRESSURE SWITCH SENSE CIRCUIT When Monitored and Set Condition: P0871-OD PRESSURE SWITCH SENSE CIRCUIT 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 RELAY DTC’S 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 ACTION APPLICABILITY 1 NOTE: Low fluid level can be the cause of many transmission problems. If t, read Engine DTC’s. Check and repair all Engine DTC’s prior to performing any transmission symptom diagnostics. t, read Transmission DTC’s. Record all DTC’s and 1 Trip Failures. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. All Continue 122 TRANSMISSION - NGC |