I see a threads on this sad topic I.e. https://www.toyota-4runner.org/4th-gen-t4rs/223147-code-p0456-when-its-not-gas-cap-3.html
My codes differ a little from that thread. Reading elsewhere and looking back I think I did this to myself one day filling tank and got distracted so overflowed. Two weeks later I got the recurring group of five, usually repeated twice for total of ten codes at once. Cleared, they return a few starts later.
My question is how to determine what actually needs replacing? And does anyone know of a video or stepped walkthrough of the process?
My codes differ a little from that thread. Reading elsewhere and looking back I think I did this to myself one day filling tank and got distracted so overflowed. Two weeks later I got the recurring group of five, usually repeated twice for total of ten codes at once. Cleared, they return a few starts later.
My question is how to determine what actually needs replacing? And does anyone know of a video or stepped walkthrough of the process?