Gx8

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my check engine light was show yesterday!! i went to dealer and got fix, no problem!!!They said no problem to my engine!! but drove for 15 mile check engine light came on again!!
Is anything to do with Exhaust system, I mean O2 sensor ( i was change to Greddy SP2) but still have stock Converter...
thanks people who help me..

Gambit

My light was on about a week ago and the woman told me to make sure my gas tank lid was tightened all the way (i live in jersey so we're not allowed to do it ourselves)...and she said the light would go off in a few days...it worked

don't know if that's your problem but it's some dumb little thing you might not think of checking