Where is the fuel pump control module located?
In most modern vehicles, the fuel pump control module (FPCM) is housed with the fuel pump itself in the fuel tank. Some makes and models use a separate FPDM (fuel pump driver module) mounted elsewhere in the car, such as the engine bay or under the rear seat. The exact location varies by vehicle, so checking the service manual for your model is the best way to confirm.
Understanding the fuel pump control module and its placement
The fuel pump control module is the electronic brain that manages the fuel pump’s operation, including fuel pressure and delivery based on engine demands. Its physical location has shifted over generations as manufacturers seek to simplify wiring, improve diagnostics, and reduce heat exposure for sensitive electronics.
Common locations by vehicle design
Below is a snapshot of where you’re most likely to find the FPCM or FPDM on contemporary vehicles. Note that exact placement can still vary by make, model, and year.
- Inside the fuel pump module in the fuel tank (the most common arrangement on recent models).
- Integrated with the fuel pump assembly, with access through a panel under the rear seat or in the trunk lining.
- A separate FPDM mounted in the engine bay, near the firewall or inner fender well, on some GM, Ford, Chrysler, and related models.
- Integrated into the vehicle’s main engine control module (PCM) on a few designs, removing a discrete FPDM from the fuel system entirely.
Understanding these locations helps explain why service procedures, such as pump replacement or diagnostic tests, may require different access points depending on the car you own.
How to locate yours specifically
Follow these steps to identify the exact location for your vehicle. These steps are designed to work across many makes and models.
- Consult the owner’s manual or a dealer service bulletin for the exact FPCM/FPDM location tied to your VIN.
- Check for an access panel under the rear seat cushion, trunk floor, or behind interior trim that reveals the fuel pump module.
- Inspect the engine bay for a square or rectangular control unit labeled FPDM or FPCM, often near the fuse box or near the alternator.
- If in doubt, reference the vehicle’s fuse/relay diagram; the “Fuel Pump” circuit will point you to the module’s location or its power harness route.
Locating the module is not just about replacement—it helps with diagnostics, pressure testing, and understanding fault codes related to the fuel delivery system.
Safety and practical considerations
Working with the fuel system carries fire and health risks. Always depressurize the system, disconnect the battery, and follow manufacturer guidelines. If you are unsure about the location or the procedure, consult a qualified technician or your dealership.
Summary
The fuel pump control module is most often housed inside the fuel tank as part of the fuel pump assembly, but some vehicles use a separate FPDM mounted in the engine bay or under rear seating. Because placement varies by make, model, and year, consult your owner's manual or a service manual for your exact VIN to confirm the location and any special access steps needed for service.
