0456
 

Yesterday I noticed that my truck threw out a 0456 code small leak in evap system,my question is how do I FIND THE LEAK?

RE: 0456
 

make sure the gas cap is tight

RE: 0456
 

It's almost always the gas cap. Clear the code, tighten the cap and see if it comes back. If it does, a new cap is only $15 at your Dodge dealer.

RE: 0456
 

So do you take the negative battery cable off for5 minutes,then tighten cap and watch for codes,I'ts a new cap from the dealer.

RE: 0456
 

Think I found it a cracked line to hte canister fixed it and cleared the codes and nothing yrt.

Came back again,notice it does it when the temp outside drops or rises wierd.