P0457 & P0456 Evap code issues.

[Rsb563]

Great. Got engine light and “Gascap” notification, and codes say same thing. I’ve replaced the gascap on my ‘07. Now the fun begins, ”very small leak”.

 

[tjkj2002]

Unless you replaced with a actual OEM gas cap and than erased the code via a scan tool I'd say do those 2 things 1st.

 

[Rsb563]

Unless you replaced with a actual OEM gas cap and than erased the code via a scan tool I'd say do those 2 things 1st.

Already did both.

 

[tjkj2002]

Already did both.

Then it's time for a bi-directional scan tool,smoke machine,and vacuum pump to find the leak.

Most common EVAP leaks on KJ's are the hoses on the canister,leak detection pump,and purge valve.