Engine warning light on with no codes

[VIno Bird]

Today Sunday the engine warning light come on , went to my local Advance store and the tech did the test and found no codes , he was not able to turn it off , the same thing happen a few days ago and my mechanic also found no codes but was able turn it off .
Car runs fine with no issues , any here with pointers on this very disturbing issue ?

Thanks

[carntz]

Check your gas cap---Seriously a not fully tight gas cap has been know to do this. Another is MAF sensor could be dirty and it can be cleaned or replaced.

[VIno Bird]

Check your gas cap---Seriously a not fully tight gas cap has been know to do this. Another is MAF sensor could be dirty and it can be cleaned or replaced.

Thanks , will do both , and will report

[carntz]

Thanks , will do both , and will report

Also if after you check that if you disconnect the battery for like 5 minutes and reconnect it could clear the check engine light.

[Mitch.E]

If you find the gas cap is the culprit the check light will reset itself overnite. Mitch

[VIno Bird]

If you find the gas cap is the culprit the check light will reset itself overnite. Mitch

The gas cap looks to be secure , I order a MAF just in case it is defective , my Bird has 134K miles and has the original MAF , so I will report on this when it gets replaced . BTW it has a clean air filter and the car runs fine with no issues with the check engine light ON , go figure :(

[2K2BIRD]

I'd disconnect the battery as mentioned. It should reset and then I'd drive it to see if the light comes on again. If it does, then you might get a code this time. If doesn't, then I wouldn't worry about it.

[VIno Bird]

I'd disconnect the battery as mentioned. It should reset and then I'd drive it to see if the light comes on again. If it does, then you might get a code this time. If doesn't, then I wouldn't worry about it.

will do , thanks

[snowbird]

You could also check your o2 sensors on the exhaust system . ( Loos wire , dirty , etc. ) .

[VIno Bird]

You could also check your o2 sensors on the exhaust system . ( Loos wire , dirty , etc. ) .

Thanks for the tip

[VIno Bird]

MAF replaced and issue is FIXED :)

[carntz]

MAF replaced and issue is FIXED :)

Please tell my wife I was right about something

[steelblue5505]

Oh Jon, she already knows you were right on at least one thing that's for certain.......
.

[carntz]

Oh Jon, she already knows you were right on at least one thing that's for certain.......
.

Thank you Mike You are right as well.

[007Cruiser]

I will keep this fix in the back of what’s left of my mind.