P1102 – MAF Sensor Circuit Low Frequency
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Symptoms
- Rough idle
- Hesitation
- Poor acceleration
- High fuel trims
- Check engine light
Causes
- MAF contamination
- Air intake restriction
- Vacuum leak
- Faulty MAF sensor
- Wiring issue
Diagnosis
- Inspect MAF wiring
- Check air filter
- Test MAF frequency
- Smoke test intake
- Scan live data
Repair
- Clean or replace MAF
- Replace air filter
- Fix vacuum leaks
- Repair wiring
- Update ECU