When I fill my gas tank all the way up my engine light goes on. What gives?
Take it into the shop or to much gas
Just let the pump kick out. Don't stand there and keep topping the tank off. Be sure your fuel cap is tightly closed
the fuel cap might not be on good enough but my check engine light has been on for years and still running good
Depending on what make/ model there are several vehicles that have over fill sensors.
By over filling the tank you are (by over flow) introducing liquid fuel into a part of the emission control system that is designed to deal with vapor. Please don't do that because you can be causing damage to the filters.