Gas Cap Dilemma How It Triggers the Check Engine Light

... Gas. The ... The yellow check engine light code could mean your filter is blocked with soot. See owner's manual for more information. Fuel Cap Off or Missing. Disclaimer: Do not remove your radiator cap while the engine is hot. ... check engine light. Besides replacing a head gasket, you will also ... If your check engine light is on, it could indicate a variety of issues, ranging from "Oh no..." to "Oh, that's not so bad. The reasons for a check engine light turning on can range from something minor like a loose gas cap to something more serious like a faulty catalytic converter. a check engine light could come on. What's the most common reason? Loose gas cap. The gas cap light came on. Checked, and it was well secured. Now the check engine light is on. Did some internet searches and not sure there is a clear cause ... I've had a weird intermittent check engine/VSC light problem. I've noticed that it comes after getting gas and sometimes goes away after getting gas. unhook the battery for 5 -10 min,it will clear the coad out of computer,rember to always turn the cap until ... A check engine light triggered by a loose gas cap will go out by itself after the gas cap's been tightened. The manual seems to say it will. Why Check Engine Light Due To Gas Cap Happens? The fuel tank contains fuel, which is the material needed for the combustion process. The vehicle will run if the ...