P1263 – Fuel Shutoff Solenoid B Range/Performance
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Symptoms
- No start
- Delayed shutdown
- Intermittent stall
- Check engine light
- Drivability issues
Causes
- Sticking solenoid
- Contamination
- Low voltage
- Wiring resistance
- Control module issue
Diagnosis
- Command solenoid on and off
- Check voltage at solenoid
- Inspect for contamination
- Check wiring resistance
- Scan live data
Repair
- Replace shutoff solenoid
- Clean fuel system
- Repair wiring
- Improve grounds
- Update ECU software