How to Access Codes for a 1995 Cadillac DeVille

You can access the codes from your 1995 Cadillac DeVille using an OBD-I code scanner. This small, computerized tool can be purchased from any auto parts retailer. Trouble codes are alphanumeric codes that are sent from sensors positioned throughout the vehicle to the OBD-I computer when they sense a malfunction. These sensors also keep track of the routine maintenance needs of the Cadillac. OBD-I stands for On-Board Diagnostic computer, first generation. Once you access these codes, you can look them up in the code scanner's booklet to find out exactly what they mean.

• 1

  Find the diagnostic port on the driver's side dashboard. It can be found under the steering column. Plug the OBD-I code scanner into this port. Turn the code scanner on.

• 2

  Put the key into the ignition and turn the Cadillac to the "Acc" position, but don't start the engine. Wait for the trouble codes to automatically appear on the screen. Write the codes down on a piece of paper.

• 3

  Turn the vehicle off. Turn off the scanner and unplug it from the port.

• 4

  Look up your Cadillac DeVille's codes in the OBD-I code scanner's booklet to find out their meaning.