The issue usually has something to do with Your evap system when Your 2008 Dodge Avenger gas cap light is on. There is either an issue with the gas cap or some sort of evaporation leak along the line (hose) from where You fill Your tank, through to the gas tank itself. The most common leak is fumes escaping around the gas cap. This is why it comes up on Your dash from it no longer has a tight seal because of old, worn out, dry, and/or cracked gaskets, or due to no "clicking" or too much wiggle when You push it side to side or up/down. I'd start by changing Your gas cap. When You go to open it, there should be a tight seal, with no play (wiggle room). Your local auto parts store or Your mechanic can reset the codes for You.
William T
July 16, 2020
The 2008 dodge avenger gas cap light means there is a fuel leak. You should put the gas cap back on and continue driving slowly, the light should go out. If it does not then you have a leak in the fuel line and will need to call for a tow.
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