P0457 dodge 1500

Question

TC p0456 has been intermittent but has changed to a steady p0457

Answer 1

HI there,

This code means there is a vacuum leak in the evap system on the truck. This can be a simple issue like a bad gas cap, or something larger going on. Most of the time a good place to start is with a new gas cap, then if the code comes back, have the system smoke tested for leaks. Then repair whatever is leaking.