P0456 Volkswagen -

Question

I change the fuel cap and the purge valve to , and still the code p0456 showing up what i can do ? I have a 2002 vw passat 1.8t please i need help

Answer 1

Hi Raul,

In most cases you need to have the car smoke tested to locate the leak that is causing this code. Since you have already done the most likely steps to resolve it, this has to be the next step. The seal at the top of the tank might be leaking and also you could have an issue with the fuel pressure sensor if there isn't any leaks.