chev 2006 HHR p2135

Question

I HAVE A 2006 CHEV HHR KEEP SHOWING CODE P2135 ENGINE POWER REDUCED WE HAVE CHANGE THROTTLE POSITION SENSOR WE HAVE CHANGE IT AND THE COMPTURE AND ITS STILL DOING THE SAME THING THEY CHANGE HARNESS TO THE THROTTLE SENSOR AND TO THE COMPTURE NEED HELP ASAP THANKS TO ALL.

Answer 1

P2135 Throttle position sensor 1-2 correlation

The majority of P2135  when dealing with a HHR is a loss of its 5 volts refference at the TPS 2 the BLU / BLK wire .What happens is the refference voltage for TPS 2 is also shared with the acclerator pedal position (APP) ,  MAP sensor, the A/C refigerant pressure sensor, the fuel tank pressure sensor. If there was a DTC for any of these sensor such as a circuit low condition it will cause P2135 to set.