P0103
PowertrainFuel Air Meteringmoderate severityMass Air Flow (MAF) Circuit High Input
What P0103 Means
The MAF sensor signal voltage is higher than the maximum expected value.
Symptoms
- Check Engine Light
- Lean fuel condition
- Poor acceleration
- Engine surge
Common Causes
- Faulty MAF sensor
- Short to voltage in signal wire
- Water damage to sensor
Diagnostic Steps
- Check MAF sensor connector
- Test signal voltage
- Inspect wiring for shorts to power
- Test sensor output
Where to start: Replace MAF sensor or repair wiring.
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