Experiencing a dead OBD2 port in your 2004 Chevy Tahoe can be frustrating, especially when you need to diagnose that engine light. Often, a simple blown fuse is the culprit. Many Tahoe owners discover that the fuse powering the OBD2 diagnostic port is connected to the cigarette lighter fuse. Let’s locate it.
For the 2004 Tahoe Obd2 Fuse Location, you should first check the fuse box situated under the hood. Despite some suggestions pointing to interior fuse panels, the cigarette lighter fuse, which often affects the OBD2 port, is usually in the engine compartment fuse box for this model year. Refer to your owner’s manual for the precise fuse diagram or examine the labeling inside the fuse box cover for the cigarette lighter fuse.
If your OBD2 port is not working, begin by inspecting the cigarette lighter fuse in the under-hood fuse box. A blown fuse is identifiable by a broken wire within. Replacing it is a simple solution and can often restore power to your 2004 Tahoe OBD2 port, enabling you to use your scan tool and read diagnostic trouble codes.
If a new fuse doesn’t fix the issue, further troubleshooting may be necessary to investigate other potential causes such as wiring issues.
