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P1122
APP Sensor sense circuit low voltage – APP1
APP Sensor sense circuit low voltage – APP1
Scope: 2.5L/3.0L gasoline · System(s): EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –APP angle default value used –Speed control inhibited –APP adaptions (wear, variance) inhibited
Common causes
- APP Sensor to ECM sense circuit (APP1): open circuit
- high resistance APP Sensor sensor supply circuit: open circuit
- high resistance APP 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)