Common Symptoms
- Check engine light illuminated
- Fuel pump runs constantly even with ignition off
- Difficulty starting engine
- Engine stalling or hesitation
- Poor fuel economy
- Fuel pump relay clicking rapidly
Most Likely Root Causes
- Faulty fuel pump relay
- Shorted fuel pump control circuit wiring
- Failed fuel pump control module or driver
- Corroded or damaged electrical connector at fuel pump relay
- PCM internal fuel pump driver circuit failure
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Component Location
The fuel pump relay is typically located in the power distribution center under the hood or in the interior fuse box.
Manufacturer Notes
Some vehicles use a separate fuel pump control module rather than direct PCM control of the fuel pump relay.
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