P1247 – Fuel Pump Control Circuit Short to Power
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Symptoms
- Pump runs with key off
- Battery drain
- Fuel noise
- Check engine light
- Possible rich running
Causes
- Shorted wiring
- Stuck relay
- Incorrect wiring repair
- Control module fault
- Backfeed from another circuit
Diagnosis
- Check pump operation with key off
- Inspect relay contacts
- Check wiring for shorts
- Isolate circuit
- Scan live data
Repair
- Repair wiring
- Replace relay
- Correct wiring errors
- Replace control module if needed
- Clear codes and retest