The car wouldn't pass smog and was giving a P0455/P0456 codes. I first replaced the purge valve, which didn't work. We investigated the whole fuel system ourselves because most mechanics refused to work on it because of the cap-less tank. We finally found that part of the filler neck is plastic!!!!!! At the top of the filler neck the plastic came apart from the metal. We ordered an $85 replacement filler neck, which was easy to install.
The car wouldn't pass smog and was giving a P0455/P0456 codes. I first replaced the purge valve, which didn't work. We investigated the whole fuel system ourselves because most mechanics refused to work on it because of the cap-less tank. We finally found that part of the filler neck is plastic!!!!!! At the top of the filler neck the plastic came apart from the metal. We ordered an $85 replacement filler neck, which was easy to install.
- Tianni Y., Oakland, CA, US