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Symptom: P0720-OUTPUT SPEED SENSOR ERROR When Monitored and Set Condition: P0720-OUTPUT SPEED SENSOR ERROR When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear. Set Condition: If there is an excessive change in the Output RPM in any gear. POSSIBLE CAUSES OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN SPEED SENSOR GROUND CIRCUIT OPEN OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE OUTPUT SPEED SENSOR 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 68 TRANSMISSION - NGC |