Question

What is the Throttle Position Sensor 1 Performance and  where is it located in my 2007 Cadillac DTS

Answer 1

HI there

Basically this code means the throttle position sensor has stopped sending signal to the computer. Most of the time the TPS is the problem. On this model the TPS is part of the throttle body, so the whole throttle body must be replaced.

P0121 CADILLAC - Throttle Position Sensor 1 Performance

Read more: https://www.autocodes.com/p0121_cadillac.html