Index storingcodes · high
P0720
Output speed sensor circuit malfunction (Automatic Transmission)
Output speed sensor circuit malfunction (Automatic Transmission)
Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): TRANS EOBD, TRANS OBD II · Factory MIL flag: 2 · Default action: TCM Default: –ABS Wheel speed (CAN) substituted (Poor shift quality) –If ABS Wheel speed message incorrect – fixed 4th gear
Common causes
- Transmission to TCM output speed sensor circuit: open circuit, short circuit, high resistance Transmission internal output speed sensor circuit: open circuit, short circuit, high resistance Transmission to TCM output speed sensor circuit: shielding defective Sensor ground circuit fault Output speed sensor failure
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Compare live sensor values vs expected (unplugged/biased sensors are common)