The 2019 Honda Civic has two fuse boxes: an under-hood fuse/relay box in the engine compartment on the driver’s side, and an interior fuse box tucked inside the cabin on the driver’s side.
This article explains exactly where to find both fuse boxes, how to access them, and how to safely inspect or replace fuses if electrical components stop working, with practical guidance for drivers and DIY enthusiasts.
Fuse boxes at a glance
The Civic relies on two fuse boxes to manage electrical circuits: one under the hood and one inside the cabin. The following quick reference describes where to locate each box and what you’ll typically find in and around them.
- Under-hood fuse/relay box — located in the engine compartment on the driver’s side, near the left front of the bay. The cover is removable and usually labeled with a diagram of the circuits it protects.
- Interior fuse box — located on the driver’s side under the lower dash/footwell area. Access is gained by removing a small panel or cover on the knee area, with a diagram inside or in the owner’s manual identifying each fuse.
Knowing the two locations helps motorists quickly diagnose common electrical issues and follow the fuse diagrams printed on the covers or in the manual.
Accessing and inspecting the fuses
Use these steps to safely locate, inspect, and replace fuses in the Civic. A preliminary check of both boxes can resolve many minor electrical problems without a trip to the shop.
- Park safely and turn off the ignition. Remove the key and engage the parking brake before handling fuses.
- Under-hood fuse box: Open the hood and locate the fuse/relay box on the driver’s side of the engine bay. Remove the cover by pulling on the tab. Refer to the diagram on the inside of the cover to identify the fuse for the circuit you’re checking.
- Inspect the fuse: Use a fuse puller (often included with the box) or small pliers to remove the fuse. Hold it up to light to check for a broken conductor or a melted look. If in doubt, replace with a fuse of the same amperage rating shown on the diagram.
- Interior fuse box: On the driver’s side, remove the lower dash panel or the small cover to access the interior fuse box. Use the diagram on the inside of the cover or in the owner’s manual to locate the relevant fuse.
- Replace and test: Install a new fuse with the same rating, reassemble the panel, and test the affected function (lighting, accessories, etc.). If the fuse repeatedly blows, there may be an electrical fault that requires professional inspection.
The step-by-step guide above helps owners perform basic fuse checks while minimizing the risk of electrical damage or injury. Always refer to the owner’s manual for exact amperage ratings and fuse diagrams tied to your trim level.
Why fuse care matters
Fuses are designed to protect circuits from overloads. Replacing a blown fuse with a higher amperage is dangerous and can cause wiring damage or fire. If you encounter a fuse that keeps blowing, it signals a potential short circuit or failing component that should be diagnosed by a qualified technician.
Summary
In the 2019 Honda Civic, the fuse system is organized into two boxes: an under-hood fuse box in the engine compartment on the driver’s side and an interior fuse box hidden in the driver’s side dash. Access both by removing their respective covers and referencing the diagrams to identify the correct fuses. Replace blown fuses with the same amperage rating and seek professional help if fuses continue to fail. This dual-box setup is common across Civic trims and is designed to simplify on-the-spot diagnostics for routine electrical issues.