My check engine light is not workin at all..I have checked the fuses, and other on 1990 Mercedes-Benz 300E

Failled the smog check because check engine light is not working at all

by in Citrus Heights, CA on February 23, 2012
1 answer
ANSWER by , February 24, 2012
HAVE YOU CK'D THE BULB. THIS IS A COMMON PROB ON OLDER CARS.