ISX 15 Demandate vs fix.

[MCRENT]

Check the harness connections that mounts to the DPF can. Mine had a couple wires melted/broken( inside the connector) and caused me all kinds of grief. its a big plug the connect the harness from the DOC,DPF,SCR, outlet Nox and the differntial pressure sensor to the harness that goes to the computer. Make sure to take it apart and inspect the wires for being loose/broken and or melted. Guessing Rawze is right about this being a wiring issue to start with. Next being an injector that started all you issues. pull your exhaust off after the turbo and see if you have fuel in the pipe and do a snap test.. And get yourself a copy of insite, that is manditory as you really cant do squat without it..