OBD-I LED Code Reader & DIY Instructions
Volvo Forum Contributor and all-around DIY uberguru Ben850 fabricated an OBD-I code reader. OBD-I cars are typically model year 1988 to 1995, and have a more crude way to display codes… by displaying a series of light flashes (like Morse code) rather than storing and outputting codes in a more “human readable” fashion that OBD-II does.
These OBD-I cars diagnostic boxes are small and black, and found in front of the shock tower on the driver’s side (LHD markets).
