There are two fuse boxes in a 2009 Honda Civic: one in the engine compartment and one inside the cabin beneath the driver's side dash. There isn’t a separate trunk fuse box for this model year.
In this article, we locate each box, explain how to access it, describe what circuits it generally protects, and provide safety tips for inspecting and replacing fuses. We’ll also share practical steps for diagnosing common fuse-related issues.
Engine compartment fuse box
The engine compartment fuse box is mounted on the passenger-side area of the engine bay, near the strut tower. Its cover has a diagram identifying each fuse and relay, making it easier to locate the circuit you’re troubleshooting.
Access is straightforward: open the hood, find the black plastic box, lift the cover to reveal the fuses and relays, then use the diagram to locate the fuse you need.
- Open the hood and locate the engine-compartment fuse/relay box on the passenger side near the firewall/strut tower.
- Remove the lid to view the fuse layout; refer to the diagram on the underside of the cover for fuse numbers and corresponding circuits.
- Identify the fuse related to the affected system, then pull it straight out using the fuse puller or a small insulated tool.
- Replace with a fuse of the same amperage rating and re-seat it firmly.
Note: If the fuse keeps blowing or you’re unsure about the correct amperage, consult the owner's manual or a qualified mechanic to diagnose possible wiring faults or a defective component.
What to know about engine fuses
Engine compartment fuses protect critical systems such as the ignition, fuel, charging, and power distribution. Replacing a blown fuse should be a temporary fix; persistent blows indicate a higher electrical fault.
Interior cabin fuse box
The interior fuse box for a 2009 Civic is located inside the car on the driver's side, beneath the dash behind a small removable panel near the knee area. The cover includes a diagram showing the fuse assignments for interior electronics.
To access: sit in the driver’s seat, reach under the dash, press or lift the panel to open, then remove the fuse panel cover to view fuses and their labels.
- Open the driver’s-side lower dash panel to reveal the interior fuse box.
- Remove the fuse box cover to see the fuse diagram and circuit descriptions.
- Check or replace the blown fuse with one of the same amperage rating; insert fully.
- Test the affected accessory after replacement to confirm power restoration.
Always ensure the vehicle is off and the key is removed before handling fuses. If you’re uncertain about the fuse rating or the proper fuse placement, refer to the diagram on the cover or the owner’s manual.
Tips for interior fuses
Interior fuses cover lights, courtesy features, power windows, radios, and other cabin electronics. If a fuse blows repeatedly, there could be a short or faulty switch, and professional diagnosis is advised.
Summary
For a 2009 Honda Civic, the fuse boxes are located in the engine compartment and inside the cabin under the driver’s dash. Knowing how to access them and read the diagrams helps you diagnose most fuse-related issues. If problems persist, seek professional service.