P0121 code before and after replacing the TPS and the wiring harness that connects to the TPS (although I don’t think I did the wiring correctly) since there’s no codes on that I assume I did the wiring correctly.

here’s a screenshot of the codes I received along with a video of how the car is accelerating (assuming limp mode is active)

 

Any update? The same code just popped up on my 2011 LS460.

 

No update still have the P0121 code which is keeping me in limp mode. The other codes are gone though.
It’s a range issue meaning the tps isn’t giving the computer the correct range or something like that. I’m not entirely sure how to fix this issue I’ve been trying for months

 

If you had the code previously this may not be your issue, but did you make sure the TPS was calibrated after you replaced it?

You should be able to see the TPS position or percentage or whatever it's called in Live Data with Blue Driver.

This is from my 02 Service Manual.


Also checking the live data will show you if it's reporting or not. You may have a wiring issue.