2007 LR3 113,000 miles. Cat code P2096 P2098

With the LR computer, it is confirmed I'll need to replace both Cats. This is what I found interesting. Per my friend who works at the dealer, they are seeing a lot of LR3 or RR with the V8 4.4, mileage between 80K to 130k with the same cat code, ended up replacing one or both Converters.

Anyone on the forum running into the same issue? This is the first vehicle I owned with Cat failure... Shouldn't the converter last much longer???

 

2007 LR3 113,000 miles. Cat code P2096 P2098

With the LR computer, it is confirmed I'll need to replace both Cats. This is what I found interesting. Per my friend who works at the dealer, they are seeing a lot of LR3 or RR with the V8 4.4, mileage between 80K to 130k with the same cat code, ended up replacing one or both Converters.

Anyone on the forum running into the same issue? This is the first vehicle I owned with Cat failure... Shouldn't the converter last much longer???

 

Call me a skeptic, but anytime I hear that both cats have supposedly gone bad at the same time, I raise an eyebrow. Yeah, sure... the same factors that cause one to go bad, could definitely cause the other to go bad, but not at the exact same time.

That being said, I know there was an issue with the '03-'05 RR full size where they would develop cracks in the cat. LRNA extended the warranty on this particular item as a result (my understanding is that it was either a manufacturer defect or design flaw). Regardless, they extended the warranty to 11 years/120,000 miles. Our cat happened to go bad 3 days (literally) after the 11 year mark. My wife spent many hours on the phone with LRNA, but they ultimately agreed to cover it.

 

Cat failed on my Jeep with under 30k miles.

ask your friend what else should be checked while swapping cats? Transmission filterP

 

Which scanner are you using? From my experience, Cat codes are P0420 and P0430- Cat efficiency below threshold. These codes are for system too lean from post cat sensor. Check your fuel trim readings. Check for a vacuum leak, dirty MAF or loose intake hose clamps.

 

Fixed mine by cleaning MAF, intake manifold, and running a tank of Techron.

 

Was scanned by LR dealer computer. He works at local dealer and seeing a lot of the 4.4L getting new cats. My cat failure is 1.5 yrs in the making. I had one of the code for a while and finally both codes appeared.

 

Codes p2098 and p2096 are for the rear O2 sensors reading rich condition. These faults don't mean you need cat's, fyi.

 

I agree that the O2 sensor should be replaced before jumping to the cats. If the cats really are bad (and have been so for a long time), then there's a decent chance the O2 sensors are bad anyway from the computer dumping extra fuel into the engine and running in a prolonged rich condition.

However, like Britishautoworks said, it's very difficult to really determine whether it's the sensors or the cats because they tend to throw the same codes. That being said, it's much more common and much more likely that the sensors have gone bad than the cats.

Also, remember to always replace the O2 sensors in pairs. I would start with his first recommendation of cleaning the MAF sensor and I would do the PCV valve at the same time. After that, I'd go ahead and replace downstream bank 1 and bank 2 sensors. If that doesn't work, I'd do the upstream bank 1 and bank 2 sensors. If that still doesn't fix it, then I'd consider the cats.

 

All 4 O2 sensors replaced. Spark plugs replaced. Thermostat replaced. Adaptation reset. Fuel trim checked. Firmware upgraded. None got rid of the cat code. Tried everything in past 1.5 yrs trying to understand the root cause of the codes.