HI
I have a 2009 EX35, I love it.. awesome car.

It just reached 121,000 miles

New Radiator 2 years ago

NOW
SO I recently had a P0420
and STILL HAVE a P0455 and P0456 and a P0442

I changed my Left Driver and Right Passenger catalytic converter along with new exhaust piping leading to the muffler.

The P0420 is gone, now I have P0430 !!!

I now want to change all of the O2 Sensors, But I dont want to get OEM, since they are pretty expensive.

Which Aftermarket O2 Sensors are good ?

Hopefully the new sensors will fix the issue

Did you change to OEM cats or aftermarket?

Dzionassi wrote: ↑

Mon Jun 29, 2020 6:13 pm

Did you change to OEM cats or aftermarket?

I got aftermarket Catalytic Converters Both sides

What kind?

I think this might be your problem... low quality cats.

But what if they are not low quality?

they are, you can install defouler like this:
https://www.amazon.com/Degree-Sensor-So ... 070&sr=8-2
This will eliminate check engine light.

Dzionassi wrote: ↑

Tue Jun 30, 2020 7:07 pm

they are, you can install defouler like this:
https://www.amazon.com/Degree-Sensor-So ... 070&sr=8-2
This will eliminate check engine light.

You think this would work?

so dont buy sensors?

tooth knockn wrote: ↑

Wed Jul 01, 2020 6:08 am

Dzionassi wrote: ↑

Tue Jun 30, 2020 7:07 pm

they are, you can install defouler like this:
https://www.amazon.com/Degree-Sensor-So ... 070&sr=8-2
This will eliminate check engine light.

You think this would work?

so dont buy sensors?

yes it should work 99%. No dont buy yet, just install defouler after cat.

Dzionassi wrote: ↑

Wed Jul 01, 2020 5:40 pm

tooth knockn wrote: ↑

Wed Jul 01, 2020 6:08 am

You think this would work?

so dont buy sensors?

yes it should work 99%. No dont buy yet, just install defouler after cat.

Hi

so i purchased 2 of the defouler things.

I will install some time this week or next.

Hopefully it works