Code help c1203 and c1336

These codes came up and I’m having trouble figuring out where to start. Toyota said they can re calibrate the yaw sensor but no guarantees the light will go away. Does anyone have experience with these thanks you. My truck is a 2008 5.7, 2wd

 

Are you using any kind of dongle in the OBD port? (from an insurance company maybe?)

 

No

 

You can reset the ZP data on your own with this procedure:
https://www.tacomaworld.com/threads...ibrate-your-vsc-computer-the-easy-way.467485/

I have run into the issue you're having twice before. Once was when I signed up for Metromile insurance, and their tracking dongle that plugged into the OBD port would erase this data immediately. The other time was when I caught a front diff actuator wire when changing a steering rack and pulled it out of the harness. If neither you nor a shop has done any recent work to your truck, then this incident would be a little unusual. Try resetting it and see if it comes back!

 

I replaced a 2 inch spacer with 5100 on top setting that’s all.

 

How's the condition of your ABS harnesses? I think that's a definite possibility for causing problems with that kind of work. (I'm planning to do the same to my truck shortly)

 

Without fail, going back 20+ years, the Number 1 cause of YAW reset is BATTERY BATTERY BATTERY, the few times its isnt the battery, there are almost always other codes associated. When cranking the engine, the battery spec is 9.7v minimum for 12v systems, however toyota has long had this issue where if the battery drops below about 10.5 cranking and the starter diode doesnt catch the current when cranking releases (The diode in the solenoid can fail and not effect functional operation at all), it can cause a reset of the ABS data.
Replacing the battery so that cranking voltage remains above 11v has fixed dozens of these for me over the years. This includes cars that have been to 3 shops and had the ABS module replaced, wiring checked, and nobody can find the fault that resets once a month or so.