P1217 – Fuel Metering Control High
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Symptoms
- Black exhaust smoke
- Rough idle
- Poor fuel economy
- Fuel smell
- Check engine light
Causes
- Leaking injectors
- High fuel pressure
- Faulty O2 sensor
- MAF overreporting
- ECU control fault
Diagnosis
- Check fuel trims
- Inspect injectors
- Measure fuel pressure
- Check O2 sensor data
- Inspect MAF readings
Repair
- Replace injectors
- Replace regulator
- Replace O2 sensor
- Clean or replace MAF
- Update ECU software