Fords manufactured before 1996 come equipped with a first-generation On-Board Diagnostics computer (OBD) that retrieves and stores all error codes sent to it from various sensors throughout the vehicle. When these sensors detect a malfunction, they send the trouble code to the Ford’s computer, which turns on the vehicle’s warning and service lights. You can pull these codes right at home using a small device known as an OBD code reader, which you can purchase at any auto-parts retailer.
1.Locate the diagnostic port on the driver’s-side dash near the steering column. The port will be the same size and shape as the connector end of the OBD code reader.
2.Plug the code reader into the port.
3.Secure and Protect Your Online OBD Code Learn More about Code. Put the key into the ignition and turn it to the “II” position, but don’t crank the engine.
4.Wait for the code reader to power on. Some readers have to be turned on, so you may have to find the “on/off” switch.
5.Select the command on the reader that says “Retrieve Codes” or something similar (the command will vary by brand). Wait while the code reader interfaces with the vehicle’s computer, then write the codes down on a piece of paper.
6.Look up the OBD2 codes in the scanner manual. Unplug the reader and have the vehicle serviced or repaired based on the diagnosis obtained from the codes you retrieved.