Code P0122?

2000 FORD MUSTANG

178,000 MILES • 3.8L • 6 CYL • 2WD • MANUAL

SCOTTIE GEARHART

MEMBER
1 POST

I keep getting a P0122. I have changed the TPS several times. I have a solid 5v on the harness but can't seem to get a variation of voltage when I turn the throttle. Needing help figuring out what is going on.

Sep 2, 2022 at 1:15 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Code P0122 is Throttle Pedal Position Sensor/Switch (TPS) A Circuit Low Input. so, we need to check the connection between the TPS and the PCM. here is a guide to help and the wiring diagrams so you can do the test if the wiring is okay you will need to replace the PCM:

https://www.2carpros.com/articles/how-to-check-wiring

Here is how to replace the PCM as well in case you need it. Check out the diagrams (below). Please let us know what happens.

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Professional Diagram for 2CarPros Members
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Sep 3, 2022 at 7:41 AM