Want to swap sensors to see if catalytic or sensor. Do I have to physically disconnect from exhaust and swap complete o2 or can I just swap at connector?

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2007 XKR Convertible (added by GGG)

 

O2 sensors sense oxygen, not carbon monoxide. Try this instead:

https://www.walmart.com/ip/Cataclean...BoCdzcQAvD_BwE

 

Thx have some BBK Coming I know some swear buy it.
P0 430 is a catalytic issue whether it's the converter itself or sensor, at this point I don't know

 

You would have to swap both sensor & connector (swapping left & right)!

Don't be shocked if you break at least one in trying to do that.

 

Find and correct the misfire(s) on Bank2 prior to going any further. When DTCs P0430 or P0420 are present, the catalyst is damaged and must be replaced.

 

Not necessarily the sensor could be shot, car is 13 years old but runs smooth
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It doesn't matter, the DTC is going to keep returning until the misfire(s) are eliminated and the Bank2 catalyst replaced.

Guessing on a Jaguar can become very expensive very fast.

 

Why are you eliminating the chance of a bad sensor, just curious, might be nothing else wrong other than the sensor is faulty.
i want to eliminate be this by switching sensors if I do this and now blow a po420 I think I can say the sensor is bad.

 

It's entirely up to you, however, in my experience dealing with vehicles having DTCs P0420 or P0430, the only way to correct the situation once any misfires have been eliminated is to replace the catalytic converter on the respective bank.

 

Not w mechanic by any means but am in the electric field. Sometimes we will be have a piece of equipment say that it is failing, but in the end the equipment is ok but sensor is bad whether it is smoke detector, proving switch etc
I am hoping a 13 year old sensor is the answer.

 

As you suggest, I would disconnect the sensors. Swap left and right and reconnect. Erase codes and drive!
If P0430 comes back you know it's not the sensor.

 

I hope so too since guessing is expensive on a Jaguar. If the sensor is not the answer, look for replacement catalysts that are approved for use in your state/province jurisdiction.

 

As much as I hate to say it ... trust the repair manual. P0430 does not list sensor as a possible cause.


My question is .... if misfires are doing damage why doesn't a misfire code ever pop up? I get this issue every now and then also.

 

Is there a separate code for the sensor, if that fails?

 

I had a P0420 code that (believe it or not) was caused by a bad connections from the exhaust pipe to exhaust manifold.

I got the code, checked my fuel trims and saw they were off. all I had done immediately before was try and adjust the lay of the exhaust pipe so I took off the Bank 1pipe and smoothed out a ridge at the sealing surface and reinstalled.

And the fault went away and my trims were fine again

I didnt think a leak would throw that code but it did

 

Couple of ways at least:
1. it's running with poor fuel trims, so gradually damaging the cat(s)
2. it's not going closed loop, so will run very rich, gradually damaging the cat(s)

 

When all this covid stuff is relaxed I will get in to dealer if I don't sort it myself
thx for all the replys👍

 

It looks like P01311A through P0161 are all codes for O2 sensors. 18 codes at least and maybe more but I didn't look further.

 

Well I might as well start looking for aftermarket cats just in caae

 

The last time I threw these codes was when I was revving the engine like crazy (And a few brake stops and spinning and general little boy fun) Smoke, aromas of tires, exhaust, and fire red cats. That was at the Saturday night pre-party at Montreal F1, on Rue St. Catherine... Great memories and worth the expense for new cats, lol.

BTW, I now think of cats as a disposable and maintainable component... like tires, brakes, bushings,...