You've been given very good advice about getting to the root of the problem. Do some testing and make the repair, or visit a friend who is tooled to do so. Where is the signal stopping?
The cheaper you get the sensor for, the more of a chance the replacement part could be junk. If you just wanna throw parts, the dealer is the place to go or you could be doing it again... otherwise, eBay or Amazon should get you started. Cross reference the factory p/n for best results (it could be cast into or printed on the sensor itself.)
If you go that route, you still have to remove it once to check the p/n, put it back in, wait for shipping, etc...
How much is your time worth to you? --evenings and weekends are billable at time-and-a-half IMHO.
-The Krusty Mechanic![]()