Fault in the fuel injector control circuit for cylinder 3.
SYMPTOMS
- Check-engine light
- Misfire
- Rough idle
- Hesitation
- Reduced power
LIKELY CAUSES
- Faulty fuel injector
- Open or shorted injector wiring/connector
- Driver circuit fault in the ECM
- Clogged or leaking injector
DIAGNOSIS STEPS
- Measure fuel injector resistance and check wiring
- Check the injector driver circuit
- Test injector flow/leakage
- Swap to confirm and replace if faulty
RELATED PARTS
- Fuel injector