JeepHeepYoda

I got my downstream sensor pulled out by my driveshaft which seems to be a fairly ocmmon thing, but the problem is the bare wires from the sensor hit the driveshaft and shorted things out. I lots all power and my jeep just died. I pull into a parking lot and it starts right back up. I've replaces both o2 sensors thinking that would solve my check engine light, but it's still on. Says my sensors aren't getting enough voltage. I've taken it to a guy and he tried to fix it and he did for a bit. said he just had to move some bare wires off some metal. but then the light came back on the next day and I'm back to the lack of power, running too rich problem I had before. I've looked under there to see if there are any bare wires still toughing metal but there aren't. I can't find a problem with my wiring buy my jeep still thinks there is. I've tried resetting the computer, even putting a new computer in, but that wasn't the problem. so it has to be somewhere within the wires from the sensor to the computer. maybe I just need to replace the wire? anyone know what's going on?

buckshot500

There is a 15amp fuse in the under-hood fuse box (behind the battery). It's one of the smaller fuses, rear row, second from the passenger side.

This fuse is for both the O2 sensor's heater circuits. You'll also need to disconnect the battery for about a minute, to reset the computer.

JeepHeepYoda

Yeah, looks like that fuse is blown..all I have to do is reaplce that fuse and clear the codes and I should be good to go?

buckshot500

Well as long as you at least taped up the bare wires, & nothing else is causing a code.

JeepHeepYoda

Things seem to be running well now...thanks for the help.

buckshot500

You're welcome, glad to help!


I went through the same thing myself.

My fuse isn't blowing anymore, but when it rains sometimes the C/E light still comes on.

I think it will be fixed when I replace the aftercat sensor. The wire between the sensor & connector is just taped for now.