Ford Focus · 2020
2020 Ford Focus Fuel Pump Fuse & Relay
Engine cranks but won’t start? The fuel pump fuse and relay are quick to check.
- UK specification
- Verified data
- Checked 14 October 2026
- Sources
Quick answer
VerifiedApplies toFocus (2018) · Built 8 April 2019 to 18 August 2019Focus (2018) · Built 19 August 2019 to 26 April 2020Focus (2018) · Built from 27 April 2020Focus Vignale (2018) · Built 8 April 2019 to 18 August 2019Focus Vignale (2018) · Built 19 August 2019 to 26 April 2020Focus Vignale (2018) · Built from 27 April 2020
Fuel pump - diesel.
- Fuse
- 4A
- Amperage
- 20A
- Fuse box
- Engine compartment
- Location
- In the engine compartment
Fuel pump - gasoline.
- Fuse
- 4B
- Amperage
- 20A
- Fuse box
- Engine compartment
- Location
- In the engine compartment
Where is the fuse box?
Engine compartment fuse box
In the engine compartment
Our source doesn’t describe how to open this fuse box. Check your owner’s handbook.
Fuse box diagram
Full 2020 Ford Focus fuse chartWe haven’t drawn a schematic of the engine compartment fuse box for this version yet. Use the fuse and relay numbers on this page and the legend on the fuse box to find the right position.
Where to look
- 4A
In the engine compartment
Fuse ·20A · Fuel pump - diesel.
Position not shown on the schematic. Find fuse 4A on the fuse box legend.
- 4B
In the engine compartment
Fuse ·20A · Fuel pump - gasoline.
Position not shown on the schematic. Find fuse 4B on the fuse box legend.
Always confirm the number against the legend on the fuse box cover before pulling anything.
How to replace the fuse safely
- Switch off the ignition and all electrical equipment. Take the key out, or move a keyless fob away from the car.
- Open the fuse box and find the fuse using the number on the cover legend or the chart on this page.
- Pull the fuse straight out with the plastic fuse puller (usually clipped inside the fuse box) or fine-nose pliers.
- Look at the metal strip inside the fuse. A broken or burnt strip means it has blown.
- Fit a new fuse with exactly the same amperage rating. The number on top and the colour should match.
- Refit the cover, switch on and test the component.
- Never fit a fuse with a higher amperage rating than specified. It can let wiring overheat.
- Never bridge a fuse with wire, foil or anything else.
Fuse keeps blowing?
A fuse that blows again straight away is doing its job. Something on that circuit is drawing too much current. Common causes are damaged wiring shorting to the bodywork, a failing motor or socket, water getting in, or a faulty accessory. Fitting fuse after fuse, or a bigger fuse, won’t fix the fault and can overheat the wiring. Have the circuit tested by an auto electrician.
Not the fuse? Check these next.
Fuel cut-off switch
Many cars cut the fuel pump after a jolt or impact. Your handbook will show if there is a reset switch.
Listen for the pump
Turn the ignition on and listen for a short hum from under the rear seat. Silence suggests a power or pump fault.
Fuel level
A faulty fuel gauge can hide an empty tank. Add a few litres before going further.
Fault codes
An OBD scanner can show stored codes for fuel pressure or pump circuit faults.
Sources & verification
Applies toFocus (2018) · Built 8 April 2019 to 18 August 2019
- Manufacturer manual listingFord UK — 2019 Focus (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 08/04/2019 Vehicles Built Up To: 18/08/2019) · Accessed 14 October 2026
- Manufacturer manual listingFord UK — 2020 Focus (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 08/04/2019 Vehicles Built Up To: 18/08/2019) · Accessed 14 October 2026
- Online owner’s manualFord Focus (2018) online Owner’s Manual (O108465) — Fuse Specification Chart · Ford Motor Company · Fuse specification chart — Engine compartment fuse box; Fuse specification chart — Passenger compartment fuse box; Fuse specification chart — Trailer tow module fuse box (5-door and wagon) · Accessed 14 October 2026
Applies toFocus (2018) · Built 19 August 2019 to 26 April 2020
- Manufacturer manual listingFord UK — 2020 Focus (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 19/08/2019 Vehicles Built Up To: 26/04/2020) · Accessed 14 October 2026
- Online owner’s manualFord Focus (2018) online Owner’s Manual (O149419) — Fuse Specification Chart · Ford Motor Company · Fuse specification chart — Engine compartment fuse box; Fuse specification chart — Passenger compartment fuse box; Fuse specification chart — Trailer tow module fuse box (5-door and wagon) · Accessed 14 October 2026
Applies toFocus (2018) · Built from 27 April 2020
- Manufacturer manual listingFord UK — 2020 Focus (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 27/04/2020) · Accessed 14 October 2026
- Manufacturer manual listingFord UK — 2021 Focus (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 27/04/2020) · Accessed 14 October 2026
- Online owner’s manualFord Focus (2018) online Owner’s Manual (O175069) — Fuse Specification Chart · Ford Motor Company · Fuse specification chart — Engine compartment fuse box; Fuse specification chart — Passenger compartment fuse box; Fuse specification chart — Trailer tow module fuse box (5-door and wagon) · Accessed 14 October 2026
Applies toFocus Vignale (2018) · Built 8 April 2019 to 18 August 2019
- Manufacturer manual listingFord UK — 2019 Focus Vignale (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 08/04/2019 Vehicles Built Up To: 18/08/2019) · Accessed 14 October 2026
- Manufacturer manual listingFord UK — 2020 Focus Vignale (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 08/04/2019 Vehicles Built Up To: 18/08/2019) · Accessed 14 October 2026
- Online owner’s manualFord Focus Vignale (2018) online Owner’s Manual (O142368) — Fuse Specification Chart · Ford Motor Company · Fuse specification chart — Engine compartment fuse box; Fuse specification chart — Passenger compartment fuse box; Fuse specification chart — Trailer tow module fuse box (5-door and wagon) · Accessed 14 October 2026
Applies toFocus Vignale (2018) · Built 19 August 2019 to 26 April 2020
- Manufacturer manual listingFord UK — 2019 Focus Vignale (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 19/08/2019 Vehicles Built Up To: 26/04/2020) · Accessed 14 October 2026
- Manufacturer manual listingFord UK — 2020 Focus Vignale (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 19/08/2019 Vehicles Built Up To: 26/04/2020) · Accessed 14 October 2026
- Online owner’s manualFord Focus Vignale (2018) online Owner’s Manual (O165618) — Fuse Specification Chart · Ford Motor Company · Fuse specification chart — Engine compartment fuse box; Fuse specification chart — Passenger compartment fuse box; Fuse specification chart — Trailer tow module fuse box (5-door and wagon) · Accessed 14 October 2026
Applies toFocus Vignale (2018) · Built from 27 April 2020
- Manufacturer manual listingFord UK — 2020 Focus Vignale (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 27/04/2020) · Accessed 14 October 2026
- Manufacturer manual listingFord UK — 2021 Focus Vignale (2018) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 27/04/2020) · Accessed 14 October 2026
- Online owner’s manualFord Focus Vignale (2018) online Owner’s Manual (O196367) — Fuse Specification Chart · Ford Motor Company · Fuse specification chart — Engine compartment fuse box; Fuse specification chart — Passenger compartment fuse box; Fuse specification chart — Trailer tow module fuse box (5-door and wagon) · Accessed 14 October 2026
Fuse layouts can differ between trim levels and optional equipment. Always confirm against the legend on your fuse box.