Mudshack Posted March 9, 2020 Report Share Posted March 9, 2020 My 2015 DJ has only 90k on it. It has had the cylinder heads on 2-4-6 replaced twice, the oil filter housing replaced, and the rear wiper only works when the transmission is in reverse. But yesterday takes the cake!!! My check engine light comes on while driving. So I take it to O'Reillys to pull the codes. Upon plugging in the diagnostic tool my DJ throws a fit!! The tool says it has problems connecting. The "check AWD" light comes on, and flashes on the center gauge screen, the oil pressure shows up on the screen maxed out but won't show a PSI, the radio turns on and then off, the wipers turn on and we can not turn them off, the low fuel light turns on and the menu says check low fuel. Turn off the DJ and it won't turn back on. Try a couple of times. Finally it turns back on and everything happens again while the tool is connected. People in the parking lot were cracking up!! I shut it off and waited a few min. I started it up and drove it home. Seems to be running just fine and all the guages/temps/psi running normal. But check engine light is still on. WHAT THE HECK??? Quote Link to comment Share on other sites More sharing options...
bramfrank Posted March 9, 2020 Report Share Posted March 9, 2020 You have at least one bad ground - that's why the rear wiper only works when the backup lights are on. And where here's one bad ground there are likely more. Up where live I rustproof our vehicles and as a result we don't get those types of problem. larryl, Mudshack, jkeaton and 1 other 4 Quote Link to comment Share on other sites More sharing options...
larryl Posted March 10, 2020 Report Share Posted March 10, 2020 yes it does ^^^^^^^^^^ jkeaton 1 Quote Link to comment Share on other sites More sharing options...
Mudshack Posted March 10, 2020 Author Report Share Posted March 10, 2020 From my research it looks like the wire harness leading into the hatch is the problem. The wires get pinched in there. The dealership won't touch it without $$$. And I am afraid to open that pandora's box. Will probably end up splicing a whole bunch of things and then struggle to water proof it and fit it back in there. I do a lot on my vehicles, but I don't like dealing with electrical. Usually turns into me chasing things. jkeaton 1 Quote Link to comment Share on other sites More sharing options...
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