Welcome to the Land Rover Forums - Land Rover Enthusiast Forum.
If this is your first visit, be sure to check out the FAQ by clicking the link above.
You may have to register before you can post: click the register link above to proceed.
To start viewing messages, select the forum that you want to visit from the selection below.
I generally do not post, i utilize the search function until I exhaust all possible solutions but this one has me at my wit's end. I keep having this error code come up, I have replaced all four o2 sensors thinking that was the problem, I cleaned my MAF based on a suggestion that I read here. What's next? replace the cats? I can clear the code and it comes back after 30-40 miles. My ultra-gauge shows consistent voltage readings across all o2 sensors so I thought I was good, but then again it showed the same even before I replaced them. thank you in advance guys.
Your readings should not be "frozen", they should be changing always, and the fronts change more than the rear. The system believes your rear O2 sensors are detecting a marginal catalyst as to oxygen storage capacity to the federal standards. That black SUV that has been following you is the EPA...
Pages of how system determines this from Bosh manual on the ECU and codes. Sounds "cat-astophic".
Your readings should not be "frozen", they should be changing always, and the fronts change more than the rear. The system believes your rear O2 sensors are detecting a marginal catalyst as to oxygen storage capacity to the federal standards. That black SUV that has been following you is the EPA...
Pages of how system determines this from Bosh manual on the ECU and codes. Sounds "cat-astophic".
by consistent I did not mean that they stayed the same, only that the readings didn't look obviously different from sensor to sensor.
I missed the fact that you've an '04. Anythings possible but unless you've a ton of miles, it shouldn't be an issue with the cats. Have you had any prolonged issues with running rich or put anything through the system that could have damaged them? Also the issue lies on the passenger side.
As was said above, upstream O2s should change pretty rapidly over a few seconds while the downstream should change slowly over the same period and the readings should not be the same.
__________________
'03 D2
Super Pro Bushes; Was Koni HT, now HT RAID; Detroit Rear & TT Front; CDL then Quife torque biasing center diff; Style A Wheels; Scorpion ATRs; Goodridge Stainless Lines; EBC YellowStuff on DBA 4000XS; Big Valve Heads; 202 Cam; Stroked to 4.8L; Tuned Motronic; Added ACE & SLS; Euro Headlamps W/ Leveling & Powerfold Mirrors. Forced induction coming next.
i have 107k on it, i just bought the truck last year and the light has been on since I got it; i bought it from a used car lot and the guy that owned the lot drove it as his vehicle and was very familiar with rovers and ordered the ABS wire and cleared the amigos after i installed it. he suspected it was the o2 sensor and since I had over 100k on it I figured it was time to change them. My inspection is due soon so I need to get this taken care before that can happen.
reoccurring P0430 code
