Last week my mechanic charged me $95 to diagnose a bad O2 and Mass Air Flow sensor. He wanted $800 to replace them. With help from this group, I did it myself for $265. Now I need to reset any error codes and check for any additional errors.

I have read several of the articles on how to build code readers for the On board diagnostic II (OBD II) system. Based on what I have read, my 93 300TE will have an OBD I (pre 95) system. My buddy has a BMW; he says BMWs are better because he can easily reset the error codes using the ignition and do a "stomp test" to get error codes.

Is there any similar mechanism in my Mercedes, or do I drop another $95 to get the mechanic to do this?

Thanks,
Steven Darcy
1993 300TE, 201K miles