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Your check engine light will come on and the computer will give you an emissions code reading. I have had 2 cars show this code and it went away after I replaced the gas cap. Hope this helps.
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∙ 15y ago
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Diagnostic results PO440 explanation in a 2003 cavalier?
gas cap seal bad , replace gas cap !!
Could po410 code be for the gas cap?
No, it is not a bad or loose gas cap. It is a problem with the secondary air pump.
Can a bad gas cap lead to plug misfires?
No
Why does your gas cap light come on on the instrument panel Yes it stays on it hasn't turned off it is always on.?
Most likely, your gas cap or the o-ring on the gas cap is bad and is not sealing properly. It could also simply be that you do not have the gas cap on tight enough.
Is the gas cap bad if it makes no hissing sound when removing it?
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Could be a defective gas cap (bad sealing gasket?)
What would a bad gas cap do to cars performance?
he would fix it
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You have a problem with the EVAP system. Could be as simple as a loose or bad gas cap.
Check engine light code p2402 2007 Volvo s40?
Check your gas cap. I had a 2402 on my S40 and the gas cap was bad, easy fix...
Code po442 on 2001 gm sonoma?
Probably a bad gas cap.
How do you open a Honda Element gas cap?
The cap must have an arrow towards where to twist it and it could be bad sometimes to take off
Does the gas cap have a locking mechanism?
I don't know. I need to align the metal locking tabs with the plastic ring on the inside of the cap and don't know how to do it.
