The On-Board Diagnostic (OBD-II) codes are stored in a 2005 Ford Explorer's computer. When a malfunction triggers one of these codes, the "Check Engine" light will appear on the instrument panel. Taking the Explorer to a mechanic will cost you just for the diagnosis, and sometimes the light is triggered by something relatively minor, like an unsecured gas cap. You can access the codes yourself with an OBD-II scanner. It's a relatively easy task, and knowing how to use a scanner will save on garage fees.
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Things you need
- OBD-II scanner
Locate the OBD-II diagnostic part on the driver's side of your Ford Explorer, under the dash. The port is between the bonnet release and the gas and brake pedals.
Place the scanner's 16-pin plug into the port.
Switch the scanner on and wait for it to fully power up. This should take a few seconds.
Insert the key into the ignition and turn the Explorer to the "On" position. Don't start the vehicle. The scanner and the on-board computer are now interfaced. Any current trouble code will show on the scanner.
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