P0430 Catalyst Efficiency Code

[stanleybb50]

Can't pass inspection due to this code. Argh... I had the cats replaced from the TSB 5 years and about 50k miles ago on my 06 v8 4runner

Can anyone make sense of any if the below? Is it time for this mod (link below) or a URD sensor Sim? I probably do have a bit of a cracked manifold.... Argh...!

Any experts like Blackworks feel like chiming in would be wonderful!

Sorry I haven't been on this forum much lately... Just enjoying my T4R and haven't had any issues besides ANOTHER frozen caliper.

http://www.toyota-4runner.org/3rd-gen-t4rs/175242-how-make-your-own-rear-o2-simulator-$5.html

Sent from my SM-N920V using Tapatalk

 

[stanleybb50]

I just ordered o2 sensors (all 4)from Amazon. I'll report back if this helps/solves the light.

(2) of 234-4261
(2) of 234-9051

And an o2 removal socket.

Sent from my SM-N920V using Tapatalk

 

[scottp999]

Did the 02 sensors solve it? I just got this code today on my '06 4runner. thanks!

 

[Jeff T]

My 4R is at 276k, I bought an OBD II reader and keep clearing the code. Investing $ at this point seems foolish.

 

[oljedi11950]

O2 sensors

3 of 4 are easy , it's that 1 on drivers side a/f is a BEAAAACH !! Move some stuff outta the way , I cut myself pretty bad on some of the brackets & I'm skinny ol man !! And I think that will solve problem , did mine. This low grade fuel IMO really beats these sensors up faster :eyebrows::hand:

 

[zonianbrat]

My 4R is at 276k, I bought an OBD II reader and keep clearing the code. Investing $ at this point seems foolish.

The smog shop here checks history of CEL codes. Just clearing the codes isn't enough to pass emissions.

 

[Jeff T]

The smog shop here checks history of CEL codes. Just clearing the codes isn't enough to pass emissions.

Not an issue in IL, yet.

 

[zonianbrat]

I wish they didn't do it here. I have the 0420 code and will need to have it pass smog by the end of September.

 

[Jeff T]

I want to fix mine the "right" way, but at 276k and the underside rusting away I also need to be realistic to how much life is actually left in it.

 

[neoguri]

I want to fix mine the "right" way, but at 276k and the underside rusting away I also need to be realistic to how much life is actually left in it.

I saw someone on the fb group with a 4th gen and have 400k miles a couple weeks ago. For the rust, I bought some rustoleum and seems to work ok. I'm in the same area as you too with a 206k mile 4th gen.

 

[Maineiac]

So did the o2 sensors fix your problem? :flamethrwoer2: