I currently sent my Throttle body from my 03 CLS out and got it bored. Got it back and my Check engine light came on for High Circuit Input (p0123). I reset the Light and set the TPS at .45V. Can fan fine and dandy. Did a 3rd gear pull (yep 6speed!) and light comes on....p0123 again. I'm pretty sure that the TPS is fine. Could it be that I will need to lower the voltage a bit lower? say .40v? specs on voltage for TPS closed? any help or advice would be great. thanks!

Eddie

 

dont just check it closed you also need to check it at full throttle. Hold it open and see what it reads, it should be just under 5v if it is over it is set wrong. Also if it is to low like under 4v at full throttle. PM sent.
Hybrid-Garage.org

 

trying lowering it to .42 but i doubt that'll help much.
check the voltage while opening the butterfly slowly. check for any irregular readings. you might have a busted tps.

 

I lowered it to about .42V and it seems to be better. So far no check engine light.

 

Isn't that why they have warranties

 

warrenty is gone.

 

would adjusting the throttle stop screw do anything?