P1168 – Fuel Pressure Regulator Control Circuit
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Symptoms
- Rough idle
- Hesitation
- Poor acceleration
- High fuel trims
- Check engine light
Causes
- Faulty regulator
- Wiring issue
- Connector problem
- Fuel pump issue
- ECU issue
Diagnosis
- Inspect wiring
- Test regulator
- Check fuel pressure
- Inspect connectors
- Scan live data
Repair
- Replace regulator
- Repair wiring
- Fix connectors
- Replace fuel pump
- Update ECU