The fuel pump relay on most Ford F-150s sits in the engine compartment power distribution box (the large fuse/relay block in the engine bay), labeled FUEL PUMP or PUMP. This is the relay that controls the high-pressure fuel pump and is a common starting point for fuel-delivery troubleshooting.
Across generations, the exact box and label can vary by year and engine, so check the diagram on the inside of the fuse box cover or your owner's manual for the precise location and relay number. This guide provides typical placements and how to identify the relay in common F-150 configurations.
Common locations inside the engine bay
These spots cover the most frequent placements you’ll encounter when you open the hood on a Ford F-150. Look first in the engine compartment power distribution box, then verify against the lid diagram.
- Engine compartment power distribution box (PDB) mounted in the engine bay, typically on the driver’s side near the fender or adjacent to the battery. The relay labeled “FUEL PUMP” or sometimes “PUMP” is usually here.
- In older or certain trims, a secondary or smaller fuse/relay box near the brake booster or firewall in the engine bay may house the fuel pump relay labeled accordingly.
- Some configurations use the PDB lid diagram to indicate the exact relay position; if you don’t see a label, refer to the diagram or service manual for the exact number.
Concluding paragraph: In most F-150s, start by inspecting the engine bay power distribution box; the fuel pump relay will be labeled. If you can't locate it, use the diagram on the box cover or consult Ford's official documentation for your specific year and engine.
Year-by-year variations and what to check
Older generations (roughly 1997–2014)
Fuel pump relays in these trucks are generally found in the large under-hood power distribution box. It is located toward the left side of the engine bay (driver’s side) with a removable cover that shows a diagram identifying the relay labeled “FUEL PUMP.”
Mid-generation (2015–2020)
For 2015 through 2020 F-150s, the fuel pump relay is typically inside the engine bay power distribution box on the driver’s side, near the fender and/or battery. The exact position is shown on the lid’s diagram, which lists “FUEL PUMP” as one of the relays.
Recent models (2021–present)
In newer F-150s, the fuel pump relay remains in the engine bay power distribution box, with labeling on the lid. Some trims may have additional relays in separate modules, but Ford generally consolidates the pump control in the main PDB with an obvious “FUEL PUMP” designation.
Concluding paragraph: Always verify with the specific year and engine in your owner's manual or the diagram inside the fuse box cover, as Ford occasionally updates fuse/relay configurations between generations.
Summary
For diagnosing starting or fuel-delivery issues on a Ford F-150, the first stop should be the engine bay power distribution box where the FUEL PUMP relay is usually located. Confirm with the lid diagram for your exact year and engine. If in doubt, a dealership or repair manual will provide the precise relay position for your vehicle.