it’s usually something like an evap leak that’s pretty safe to ignore.
This was the code causing my check engine light to go off, replaced the evap canister but the light stayed on. Went away after I got the battery replaced for unrelated reasons, so I would have saved some time and money if I had ignored it instead of bothering trying to fix it.
While disconnecting the battery for a while can sometimes clear out the codes, evap lights usually won’t clear themselves after the issue is fixed for usually 100 or so miles and a certain number of engine on\off cycles.
This was the code causing my check engine light to go off, replaced the evap canister but the light stayed on. Went away after I got the battery replaced for unrelated reasons, so I would have saved some time and money if I had ignored it instead of bothering trying to fix it.
While disconnecting the battery for a while can sometimes clear out the codes, evap lights usually won’t clear themselves after the issue is fixed for usually 100 or so miles and a certain number of engine on\off cycles.