Fault code index · medium
P0103
MAF Sensor circuit high voltage
MAF Sensor circuit high voltage
Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –Default air mass used –Adaptive fuel metering inhibited –Catalyst warm up ignition retard inhibited –Canister purge inhibited –Maximum engine speed reduced
Common causes
- MAF Sensor to ECM sensing circuit: short circuit to B+ voltage MAF Sensor to ECM sensor ground circuit: open circuit MAF 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)