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TRANS CODES GALORE....what happened?? P0700, P0888, P0731, P0732, P1790, P0868, P0944

Discussion in 'Cherokee' started by donaldj79, Feb 27, 2017.

  1. Feb 27, 2017 at 11:57 AM

    donaldj79 [OP] New Member

    Feb 27, 2017
    First Name:
    05 Grand Cherokee LTD 5.7
    OK...Bought an 05 Grand Cherokee HEMI with 195K Miles, Truck was running fine. I was letting someone take it for a Test Drive and the Heater Core Blew. Fixed that. Next the Power Steering Pump was whining. Fixed that. After replacing the Power Steering Pump, the Truck wouldn't shift!! Long hesitation going into Drive and long hesitation going into Reverse. Truck is in Limp Mode. Even when I use the Auto Stick and put it in 1st Gear, Truck does not engage. I have to raise the RPMs to get the truck to move at all.

    Here are my questions:
    Could the mechanic have done anything at all wrong when changing out the Power Steering Pump?? Knicked a wire? Cut a ground? Anything at all that would show these symptoms?

    Would the water/antifreezee ingress from the Heater Core leaking on the passenger side Floor Board have fried the Shifter Module, PCM or BCM? I do see a line of wires running down the right hand side of the passenger floor board. I have dried the Floor Board out as much as I could.

    After replacing the Heater Core, the truck drove fine. I did see the radio going in and out and the horn would blare out of nowhere. So I assumed something got wet. But not sure what exactly. Truck still drove fine. I put about 60 or 70 miles on it since the Heater Core was replaced. NEVER a shifting or transmission issue. Only started after the Power Steering Pump was changed. Which leads me to believe he did something...

    Here are the codes...P0700, P0731, P1790, P0868, P0733, P0944, P0732, P0876, P0888, P0891

    I read some other posts about P0888-transmission control module off. I checked all fuses and swapped relays for the EATX. No Change!!!

    Hoping someone can point me in the right direction. I have NO experience with these Jeeps.
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