P0888 Chrysler -h

Question

I have a 05 Chrysler t&c with the code p0888 , I already changed the pack aka pressure switch how can I tell if the harness is open or shorted .what do I need to find out witch wire is it. I've bin working on this for a week and it still only runs on second gear and reverse I don't know what to do anymore.

Answer 1

P0888 Relay output always off

This is a problem with the TCM relay not turning on and give power this can be from the ECM. which affects the operation of the solenoids, Go to the engine fuse relay box what is listed as TCM relay swap it out with another relay(There is 2 relays the TCM relay is what you want),if you want you can remove the cover as you turn the vehicle on the TCM relay should close and give power to the TCM module. If it does not check the use, if its good a PCM will be required, and you will have to flash the VIN into the new PCM