Check engine light - garage warm-up


Old 02-14-18, 07:57 AM
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Check engine light - garage warm-up

The check engine light came on in our MB C300 after garage warm-up. I pulled it out, re-tightened the gas cap, and turned it off. After 5 minutes, I restarted it and the light was off. I know it was probably the gas cap but am wondering about the warm-up which was longer than usual. Is it possible for gas fumes to trigger the light?
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Old 02-14-18, 08:02 AM
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Not sure about fumes but to ease mind go to a auto parts store and have them read codes. AutoZone or ORilleys both do it. Orilleys code reader does the whole car while AutoZone just engine.
Old 02-14-18, 10:16 AM
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Gas cap and O2 sensor are most common, Mass Air Flow is distant 3rd.

Your good!

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