Two main fuse boxes: one in the engine bay and one inside the cabin on the driver's side. The exact fuse assignments and amperage ratings are printed on the covers and are also listed in the owner's manual.
Engine compartment fuse box
The engine compartment fuse box is located on the driver’s side of the engine bay, near the strut tower/fender area. It has a removable lid that protects a bank of fuses and relays for major electrical circuits. To access it, open the hood, find the fuse box cover, and lift it off. The diagram printed on the inside of the lid shows fuse numbers, amperage, and the circuits they protect. When inspecting or replacing a fuse, use the same amperage rating as specified on the diagram.
Reading the fuse labels
Refer to the diagram on the underside of the engine bay fuse box cover to identify which fuse protects which system (for example, lighting, engine sensors, cooling fans, or ignition components). If a fuse is blown, replace it with a new one of identical rating and recheck the related circuit.
Interior fuse box
The interior fuse box is located inside the cabin on the left side of the driver's dash, behind a small panel near the knee area. Remove the panel cover to access the fuse tray. Like the engine bay box, the interior box has a label inside the cover that maps fuse numbers to circuits. A fuse puller is usually included in or near the box, or you can use clean, insulated pliers to remove and inspect fuses.
Reading the interior fuse chart
Use the diagram on the interior cover to identify which fuse corresponds to each interior circuit (such as the radio, power windows, HVAC, and instrument lights). Replace blown fuses with the same amperage rating specified on the chart.
What to do if a fuse blows
With the vehicle off, locate the appropriate fuse using the fuse box diagrams, remove the blown fuse, and replace it with a new fuse of the same rating. If the fuse continues to blow after replacement, there may be a short or faulty component in that circuit, and it’s advisable to consult a qualified mechanic.
Additional tips
Always use the exact amperage rating shown on the fuse label. Do not substitute higher-rated fuses in an attempt to bypass a problem, as that can cause wiring damage or electrical fires. If you’re unsure about which fuse controls a specific accessory, refer to the owner’s manual or the diagram inside each fuse box lid for precise mappings.
Summary
For a 2008 Honda Civic, fuses are concentrated in two locations: the engine compartment fuse box in the driver’s side of the engine bay, and the interior fuse box behind the left dash panel. Each box has a diagram showing fuse numbers and circuit mappings. When a fuse blows, replace it with the same amperage and inspect the related circuit for potential faults. If problems persist, seek professional assistance.