I have read that my Disco has 4 of the same 4 wire heated O2 sensors. I currently have the P1193 downstream open heater circuit CEL and I'm wanting to resolve it. I'm going to do a little troubleshooting to check the resistance of each o2 for 6ohms of resistance across the sensors heating element. I keep seeing mention of "buy it off amazon" when I search but I have not yet seen what part number to get. Mine is the advanced EAL stuff for emissions also. I think that makes my sensors more expensive. I'd like to do all 4 at once but the cheapest sensor I've seen so far is $130 each.

Thanks. I really did try multiple times to find this via search. I downloaded RAVE for the first time today and I'm totally lost in it.

 

RAVE won't tell you the part numbers.
You can always go to the NTK website.
Here's one of my posts about them.
https://landroverforums.com/forum/sh...7&postcount=10

 

I bought mine from J.C. Whitney for around $70.00 each. They are NTK , and are exactly like the ones that were on it.

 

Only buy 2, only the front ones control engine fueling and because all four are the same you can take one of your good front O2's and stick it in place of your bad down stream one.

 

Thanks just ordered mine..

 

Oops. Too late. I ordered all 4 sensors. Well I should be good for a long time in the O2 category. I'll check to make sure everything else is optimized also so I don't have a engine problem that causes early failure. It would be cool to throw in a extra bung so I could hook my LM1 wideband up to it and watch how it does.