I was reading a Bently Service Manual for cars from '85 to '92 and I noticed there is a way to read the error codes from the fuel/exhausts system (sensors, misfires, etc) then erase them. It uses a jumper wire and a LED.
Is there a similar technique available for a '97 Golf? I would like to monitor and troubleshoot my car without giving $40 to a mechanic everytime my check engine light comes one.
Thank you.