Code P0122 gmc jimmy

Question

Check engine light displayed on my 99 GMC Jimmy. Code read P0123 which was TPS. The TPS was tested and was determined bad. Installed a new TPS. Another check engine light displayed code P0122 low voltage. How would I go about correcting this problem.

Answer 1

P0122 Throttle position sensor (TPS) voltage low

P0123 is TPS circuit high this is a open or a disconnection, now you have P0122 this is voltage low, check for rub through wire and broken wire especiall inside the terminals, The TPS wire shares a 5 volt refernce by the MAP (manifold absolute pressure ) sensor the FTP (fuel tank pressure ) sensor, and EGR position sensor,any short will cause this code to set.