Warning Signs Your Fuel Pump Control Module is Failing
- Difficulty starting your vehicle
- Stalling, especially when the engine is warm
- Reduced engine power or hesitation during acceleration
- Fuel gauge showing incorrect readings
- Check engine light illuminated
How to Test if This Part is the Problem
- Check the fuel pump relay. If the relay is bad, it could mimic the same symptoms.
- Use a scan tool to check for diagnostic trouble codes (DTCs) related to the fuel pump control module or fuel pump.
- Inspect the wiring and connectors to the fuel pump control module for any signs of damage or corrosion.
- Use a multimeter to test the voltage and ground signals at the fuel pump control module. Compare your readings to the vehicle's service manual specifications.
- If possible, temporarily swap the fuel pump control module with a known good unit to see if the problem is resolved.
Common Failure Causes for This Part
- Overheating due to its location near the fuel tank or exhaust system
- Corrosion from exposure to road salt and moisture
- Electrical surges or voltage spikes
- Normal wear and tear over time