The 2005 Ford Crown Victoria utilizes the standard OBD2 diagnostic port, but accessing the fuse responsible for its operation can sometimes be tricky. This guide will help you locate the OBD2 fuse in your 2005 Crown Victoria. Understanding its location is crucial for troubleshooting diagnostic issues.
Two Fuse Boxes: Passenger Compartment and Power Distribution Box
The 2005 Crown Victoria has two fuse boxes:
- Passenger Compartment Fuse Panel: Located on the lower left side of the dashboard, near the steering column. This fuse box primarily houses fuses for interior components.
- Power Distribution Box: Located in the engine compartment, usually near the battery. This box contains high-amperage fuses for major electrical systems.
Finding the OBD2 Fuse
The OBD2 port’s power supply is typically tied to the cigarette lighter circuit. In the 2005 Ford Crown Victoria, this fuse is often labeled as “Cigar Lighter” or “OBD II” and can be found in the passenger compartment fuse panel.
Step-by-Step Guide for Passenger Compartment Fuse Panel:
- Open the fuse panel door: Gently pry open the fuse panel door located on the lower left side of the dashboard. You might need a small flathead screwdriver or a similar tool.
- Consult the diagram: Inside the fuse panel door, you’ll find a diagram illustrating the location and function of each fuse.
- Locate the “Cigar Lighter” or “OBD II” fuse: Find the fuse corresponding to the cigarette lighter and OBD II port. In the 2005 Crown Victoria, this is usually fuse #27, a 20A Mini fuse.
- Inspect the fuse: Carefully examine the fuse. A blown fuse will have a broken filament visible through the clear plastic.
Checking the Power Distribution Box (Less Likely)
While less common, it’s possible for the OBD2 power to be sourced from the power distribution box. If you can’t find the relevant fuse in the passenger compartment, consult the power distribution box diagram located under the hood. Look for fuses related to the diagnostic system or the PCM (Powertrain Control Module). However, it is highly likely the fuse resides in the passenger compartment fuse box.
Replacing a Blown OBD2 Fuse
If you find a blown fuse, replace it with a new fuse of the same amperage (20A). Using a higher amperage fuse can damage the electrical system.
Important Note: Always disconnect the negative battery terminal before working with fuses. This precaution prevents accidental shorts and potential damage.
By following these steps, you should be able to successfully locate and replace the 2005 Ford Crown Victoria Obd2 Fuse. This will allow you to restore power to the OBD2 port and continue with vehicle diagnostics.
