Have replaced cap all lines fuel pump code comes back within 3 months then every other day

Question

2001 Jeep Cherokee Sport 4.0L, have replaced cap all lines fuel pump code comes back within 3 months then every other day. I got the codes P0456 and P0455

Answer 1

Hi there,

These aren't fuel pump codes. These codes are related to the evap system. Basically you have a leak on your evap system. Usually when you have this type of issue it's best to have a shop do a smoke test on the evap system to locate the leak, then you can do the repair yourself to save some money.

Answer 2

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

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