[sport_4x4]

I agree, peace of mind is worth $400, but that being said... (and not to rub it in)

It cost me $40 and ~20 minutes in the driveway, most of which was jacking the Cherokee up and down and removing then re-mounting the front passenger tire.
You just need a specific socket to remove the sensor that I found bundled with the senor itself on Amazon and an extension with u-joint for the ratchet wrench to reach the sensor itself.

I had to replace mine earlier this summer and I'm so glad I found the write up on this forum for it!

 

[sport_4x4]

hehe gee thanks a lot

On the other hand, I didn't have peace of mind.
Since I "diagnosed" the issue myself (i.e. googled the code that came up), I took a chance that I was driving with insufficient oil pressure due to some other reason I wasn't aware of, that an actual mechanic would have known to check.