Close
my check engine light won't come on. how can this be fixed?
1999 Ford Explorer

My check engine light won't come on. how can this be fixed?

(1999 Ford Explorer)
i just failed a safety inspection
in Jacksonville, NC on March 01, 2012
Ask a Question
1 answer & 0 comments
Popular Answer
The bulb in the dash gets power to the bulb/printed circuit on the instrument cluster, the computer in your car then grounds the bulb circuit when the ignition key is turned on, or when the engine is running and it sees a fault! It could be a computer problem, wiring issue, blown bulb or instrument circuit problem, no way of knowing until you start investigating the wiring.
Sign in to reply
General Diagnosis
$88 - $111 Learn More
The bulb in the dash gets power to the bulb/printed circuit on the instrument cluster, the computer in your car then grounds the bulb circuit when the ignition key is turned on, or when the engine is running and it sees a fault! It could be a computer problem, wiring issue, blown bulb or instrument circuit problem, no way of knowing until you start investigating the wiring.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Front windshield washer not pumping water but the rear pumps water.
Doesn't blow very well on feet or side vents only get hot when driving