The P2122 is a circuit code and it could be the pedal but it could also be a wiring issue or it could be the ECM. The P2138 is just telling you that APP 1 and 2 did not show the same thing so it is saying there is an issue.
I attached the test that needs to be run through to confirm the issue.
Just so you know, the ECM can cause the p2135 code as well but the fact that this did not come back you may just have a pedal issue at this point.
Let me know if you need more information and we can go from there. Thanks
Images (Click to enlarge)
Friday, July 5th, 2019 AT 2:23 PM