My girlfriends Jeeps Check engine light keeps coming on. We have been to several mechanics and none can figure it out. We brought it to AutoZone and they came up with the P0410 code. I know this is the secondary Air Injection System. Any suggestions on what i can do to narrow the problem down? and what parts or sensors should i get to resolve this problem. Currently when the check engine light comes on the car will run very sluggish. It sucks up Gas like no tomorrow and doesnt want to shift easily. But you can tell it isnt a transmission problem. They just replaced the fuel filter module for another problem and this seems like its the last hurdle. Any thoughts or suggestions?

Moving to the Grand Cherokee forum for you; sorry don't know the answer.

They got that code out of a 97 ZJ?I never saw one with an air pump,and that's what that code is about.