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Old 07-01-2016, 03:07 PM #1
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P0430 Catalyst Efficiency Code
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



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Old 07-01-2016, 05:00 PM #2
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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.

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2006 T4R SR5 v8 4wd: Napa Ultra Premium Rotors; Weather Tech liners; AVS Ventshades; Westin Bull Bar; Hydrocarbon Delete; Blackhoused Headlights; Fog Light Mod; Sulfer TSB; Magnaflow 22" Muffler (#12586); Front: Bilstein 5100's set at .85" + Toytec 1" Net "Top1-T" Spacer = 2" total Front Lift; Rear: Cornfed 1" + Air Lift 1000; Plasti-Dip center grill + rear Toyota Emblem; JVC Bluetooth + HD Radio HDR81BT

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Old 08-04-2016, 05:28 PM #3
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Did the 02 sensors solve it? I just got this code today on my '06 4runner. thanks!
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Old 08-09-2016, 12:11 PM #4
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My 4R is at 276k, I bought an OBD II reader and keep clearing the code. Investing $ at this point seems foolish.
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Old 08-09-2016, 12:29 PM #5
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Talking 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
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Old 08-09-2016, 01:34 PM #6
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Quote:
Originally Posted by Jeff T View Post
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.
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Old 08-09-2016, 01:35 PM #7
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Quote:
Originally Posted by zonianbrat View Post
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.
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Old 08-09-2016, 01:39 PM #8
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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.
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Old 08-09-2016, 01:41 PM #9
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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.
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Old 08-10-2016, 10:30 AM #10
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Quote:
Originally Posted by Jeff T View Post
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.
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Old 08-21-2016, 02:25 AM #11
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So did the o2 sensors fix your problem?
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