Check light - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

11-12-2003, 09:08

Does anyone have any ideas on why the "check light" light illluminates? My truck had one show up yesterday, but there seems to be no problem with the way my truck runs or drives. Can it illuminate when you are running low on coolant???

Tominator · 11-12-2003, 16:33

Any number of reasons might trigger the light.

A loose spark plug wire or???

Most cars/trucks show the light after a set number of miles. If it were serviced at a dealer or reputable shop, they would reset the ECU after retrieving the codes during normal maintenance.

I'd disconnect the battery for a few minutes and then see if it comes back on.

'92BigBronco · 11-12-2003, 16:46

Your best would be to either take it down to Ford to let them pull the codes or, if available, take it down to one of your local parts houses. Nearly all of them will pull the codes and interpret them for you for free. There's a whole lot of things that could cause the light to illuminate and to try and figure it out without any driveability problems is a tough chore.

ss_girl · 11-12-2003, 18:05

ford check gauge light comes on as a warning, it could be a coroded sensor, gas cap off, gas low. etc. not anything terrible

11-16-2003, 21:30

I had the computer checked and there were two codes....for the same thing! One said EGR emissions insufficient and EGR emissions excessive. But no one had a single clue why or what for....any ideas???

351w · 11-18-2003, 21:17

wow thats a good one but you already answered your own question.
start looking for a faulty egr valve or similar.

JohnnyO · 11-25-2003, 09:51

Most of the time it's a bad O2 sensor in my experience.

12-01-2003, 17:17

typically, how much does it cost for repair of the EGR????