The fuse boxes in a 2020 Honda Civic are split between the engine compartment and the interior cabin. The engine-fuse box sits near the battery in the engine bay, while an interior fuse box lives under the driver's side dash inside the cabin.
Engine-compartment fuse box
Where to locate and how to access
Open the hood and look on the passenger side of the engine bay, where the engine’s battery is typically located. The under-hood fuse/relay box is near that area and is clearly marked. The cover has a built-in diagram showing which fuse protects each circuit.
Before you begin inspecting, prepare to remove the cover by releasing its latch and lifting it off. If your Civic includes a built-in fuse puller, use it; otherwise, insulated pliers or a similar tool will work to remove fuses safely.
To inspect or replace a fuse, locate the correct position on the diagram, pull the fuse straight out, check for a blown element (a broken filament or opaque glass), and replace with a fuse of the same amperage rating. Reinstall the cover securely when finished.
- Locate the under-hood fuse/relay box near the battery on the passenger side of the engine bay.
- Remove the cover and read the diagram to identify the fuse you need.
- Remove the fuse with the fuse puller or appropriate tool and inspect for a blown element.
- Replace with a fuse of the exact amperage rating and reseal the cover.
Note: Never bypass a fuse or replace it with a higher-amp rating. If a fuse repeatedly blows, have the electrical system checked by a professional.
Interior fuse box
Where to locate and how to access
The interior fuse box is located on the driver’s side under the dash inside the knee area. Access is gained by removing a small panel or cover in the lower portion of the driver’s-side dashboard.
The panel or cover usually contains a diagram identifying each fuse’s function, such as lighting, radio, power windows, and other accessories. A built-in fuse puller is often attached to the panel for convenience.
To inspect fuses, remove the panel, locate the appropriate fuse according to the diagram, and pull it out to check. Replace with the correct amperage rating and reassemble the panel.
- Find the interior fuse box behind the panel on the driver’s side kick panel or under-dash area.
- Remove the panel to reveal the fuse block and the diagram labeling each fuse.
- Use the fuse puller to pull and inspect fuses; replace with the indicated amperage.
- Reinstall the panel once all necessary fuses are checked or replaced.
Tip: Keep a small assortment of common fuse ratings (such as 10A and 15A) in your glove box for quick substitutions, but do not substitute a higher-rated fuse for a blown one.
Summary
For a 2020 Honda Civic, there are two fuse boxes to know: an engine-compartment box near the battery and an interior cabin box on the driver’s side under the dash. Each box has a diagram on its cover to guide you to the right fuse, and both use standard fuse-pulling tools. Always replace fuses with the exact rating and consult a technician if any fuse blows repeatedly.