P0430 Code

Hey all,


So I recently replaced both downstream cats on my 06 SR5 last week, driving today back home I got a code for P0430 (bank 2). I replaced both downstream O2 sensors and included new hardware and gaskets as well.

I replaced the right with a Walker OEM style Catalyst & replaced the left with MagnaFlow Direct Fit Catalyst (O’Reilly didn’t have Walker in stock)

O2 sensors are Denso on right & Walker on left ( again, O’Reilly didn’t have Denso)

Any suggestions or reasons why it’s throwing the code for Bank 2 now?

Thanks!

 

Get a Denso O2 from rockauto.com.

The O'Reilly sensor is junk and most likely causing the issue. Only use Denso sensors or get OEM, which are made by Denso.

Also, buy OEM catalysts when the Walker and Magnaflow ones fail in a few years.