Air Charge Temperature Sensor?

[helotaxi 5,000+ posts]

OBDII will trigger the Check Engine light if the gas cap isn't on all the way. If you get a check engine light you're supposed to take it to a certified mechanic and have them check it and reset the light. Auto Zone can check it. I've also had them reset the light for me after I tightened the gas cap. The gas cap is part of the evaporative emissions system.

 

[Sm0keN 10+ year member]

OBDII will trigger the Check Engine light if the gas cap isn't on all the way. If you get a check engine light you're supposed to take it to a certified mechanic and have them check it and reset the light. Auto Zone can check it. I've also had them reset the light for me after I tightened the gas cap. The gas cap is part of the evaporative emissions system.

but if you unplug the battery it goes off anyways. But in my case just turns right back on. But if i unplug the sensor, then the car wont start... i pick it up tomorrow ill post if it fixes my problem or not