Hi, 2006 H3 Suddenly gives stab/abs/reduced power messages but throttle pedal response is actually zero. It idles fine but zero throttle response. Codes are P2122 and P2128 so I replaced the accelerator pedal assembly and crossed fingers...no luck, same exact symptoms.

Thinking TB replacement but as this happened just after a big rain, didn't know if its one of the under dash or under seat parts that got wet instead? Can't find any actual water anywhere from sunroof but haven't removed passenger seat yet.

Does zero throttle response give anyone a clue? Can't drive it anywhere, would have to tow and it'l get real expensive to just start replacing PCM/BCM and a bunch of other stuff one at a time. Thanks in advance!

 

Did you get this figured out?

I had this issue with a 2003 Denali, took me a while to figure it out but it turned out to be a front wheel speed sensor grounding to the wheel.

Someone changed the speed sensor and did not secure the cable to the spindle with the required bracket. This allowed the sensor cable move just enough to rub the wheel.

But along with the listed DIC's you listed it also had others, if I remember correctly there was a communications code also.

Neal