Mechanics

CHECK ENGINE LIGHT

Mazda Protege

I have a 1999 Mazda Protege and the check engine light doesn't come on when the ignition is in the run position. I believe the dealership disabled the check engine light but don't know how to get it to work again.
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Ttkt15
August 16, 2006.




I have never heard of a disable function. However on some models, if the MIL is not on like you discribe, the bulb is either burned out, or it may indicate a problem with the PCM itself.
I would try a new bulb first, and if that doesnt fix it, you can always remove a sensor plug and try and induce an engine code to see if it comes on. One thing tho, if you get a code, you will need a way to clear the code.
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Tiny
Mikeybdman
Aug 16, 2006.
It may be a burned out bulb but I do have fault codes that come up when the engine is checked but the check engine light isn't ever on.

Tiny
Ttkt15
Aug 16, 2006.

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