The engine codes p0442, p0455, and p0456 have been displayed, bad emissions leak where?

Question

2004 Jeep Grand Cherokee V8, the engine codes p0442, p0455, and p0456 have been displayed, bad emissions leak where?

Answer 1

Hi there,

With this set of codes it could be leaking anywhere. What you should do is have a smoke test done. Smoke is pumped into the evap system, then once the leak is located that item can be repaired. This will save money in the long run instead of throwing a bunch of parts you don't need onto the truck.

Answer 2

P0442 JEEP - Evaporative Emission Control Small Leak Detected
Read more: https://www.autocodes.com/p0442_jeep.html

P0455 JEEP - EVAP System Large Leak
Read more: https://www.autocodes.com/p0455_jeep.html

P0456 JEEP - EVAP System Small Leak
Read more: https://www.autocodes.com/p0456_jeep.html