P1235 – Fuel Pump Control Module Fault
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Symptoms
- No start
- Loss of power
- Intermittent stall
- Hard starting
- Check engine light
Causes
- Internal module failure
- Overheating
- Voltage spikes
- Corroded connectors
- Ground issues
Diagnosis
- Check power and ground
- Inspect module location
- Check for water intrusion
- Scan for related codes
- Check pump operation
Repair
- Replace fuel pump control module
- Repair wiring
- Improve grounds
- Protect from moisture
- Clear codes and road test