Check Engine Light & Gas Cap Indicator
My check engine light along with the gas cap light came on while I was driving. I pulled over and reset the gas cap. The gas cap indicator went out, but the check engine light is still on. Will this automatically reset, or do I need a mechanic? It has been two days so far and the indicator is still on. Thanks
It should reset as you drive it more.
The check engine light is on because the computer detected a leak in the EVAP emission control system. We know that it was because of the gas cap not being on correctly. The computer needs to test the EVAP system to make sure everything is ok before the check engine light will go out. To help speed up the testing of this system keep your gas tank between 3/4 and 1/4 full. No more and no less. This will prompt the computer to run the test on the EVAP system. It may take several days of normal driving for the tests to run. The EVAP system is one of the hardest readiness monitors to reset after servicing. Be patient. HTH. -Jim
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