P0103 – MAF Sensor Circuit High Input
Description
The ECM detects a high voltage signal from the MAF sensor, indicating excessive airflow or electrical fault.
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Compare Diagnostic ScannersSymptoms
- Rough idle
- Hesitation
- Poor acceleration
- Rich condition
Causes
- Dirty MAF
- Wiring short
- Faulty MAF sensor
- Air leaks
Diagnosis
- Monitor MAF data
- Inspect wiring
- Check intake leaks
- Test sensor
Repair
- Clean or replace MAF
- Repair wiring
- Fix intake leaks