how to test throttle position sensor on saturn ion

Question

How do you test tps on a 2005 ion.. My car keeps going to limp mode and putting up codes p2128 p2135 how can I go about fixing this without taking toecahnics and have to pay lots of extra charges?

Answer 1

P2128 Accelerator pedal position (APP) sensor 2 circuit high voltage

P2135 Throttle position sensor 1-2 correlation

Circuit high codes are disconnection or poor connection , check the connection here, sometimes disconnecting the connection and reconnection improves the connection ,