how often does a tps go out, is it more likely another problem

Question

i had water pump done just before this problem occured

Answer 1

P0122 Throttle position sensor circuit low

With this code you would have to have its reference voltage measured, What the ECM does is look for open circuit shorts, grounds, Being circuit low may not be the TPS sensor, you can have other component such as the MAP sensor being faulty, The water pump replacement would not have been related to the code that is set,