2010 Tundra: P0717

[kevm14]

I drove to the transfer station mostly in 4hi just to exercise it per the owner's manual. Switched back to 2hi before pulling in. Did my stuff. As I was pulling out I switched back to 4hi and shortly after, I got this:

20260405_090932.jpg

Scanned it and got this:

Screenshot_20260405_092016_Ediag.jpg

Unfortunately I don't see any PIDs to observe what sounds like a transmission sensor. I was able to switch back and forth between 2hi and 4hi after this happened so maybe it's not related to the 4wd at all. The reason I mention that is because a week ago, I drove it to work and got a blinking 4hi/4lo display. No codes though. Did some research and it could be just the switch/controller in the dash. But it hasn't happened since.

[kevm14]

https://www.tundras.com/threads/p0717-c ... ase.54652/

[kevm14]

Unfortunately I don't see any PIDs to observe what sounds like a transmission sensor.

Found the PID.

Tundra turbine speed sensor PID.PNG

Nada

Screenshot_20260405_101048_Ediag.jpg

Also no difference in reading plugged in or unplugged. Probably makes sense to throw a sensor at it before I chase a ghost.

[kevm14]

Looks like it is 89413-0C020.

Discontinued by Toyota according to the site I use but: https://www.rockauto.com/en/moreinfo.ph ... 34&jsn=516

Only $47 for the AISIN.

[kevm14]

Thanks to the factory service manual I was able to find the PID ID for the input shaft speed sensor. It reads zero whether the sensor is unplugged or plugged in.
.
Access looks tight but should be pretty easy.