P0430 Toyota Code - Catalyst System Efficiency Below Threshold Bank 2

Code p0430....
Bank 2 is located on passenger side or driver's side

What model and year is your Toyota?

2003 Toyota Camry v6

Since the engine is sideways, the front of the engine is on the passenger side and the "Bank 2" is on the side in front of the vehicle (radiator side).

Bank 2 is where Cylinder #2 is.

Thanks u so much

DO YOU KNOW ANY SHOP WHERE I CAN TAKE MY TOYOTA SIENNA TOYOTA DEALER IS EXPENSIVE $1500 JUST FOR THE PARTS ? FOR THE CATALYST

Where do you live? you find reputable repair shops in your area here: https://www.autocodes.com/s...

I have a 2012 4Runner, Code P0430, Bank 2. Does the left or right converter need to be replaced?

You have to replace the "Left" (Drivers) side Catalytic Converter.

Hello, 2004 v6 4runner, 228K miles, p0430 bank 2 code. O2 sensors never replaced, car runs fine. Any chance it's just an old sensor?

It's unlikely that the problem is the O2 sensor. If the problem was the O2 sensor, then it will trigger the O2 sensor code. Before replacing the Catalytic Converter, try using high octane gas for a couple weeks. Sometimes that will clean the Catalytic Converter.

I have a P0430 reading that says Catalyst system deficiency below threshold (bank 2). It is for my 2005 toyota camry le V6 3 liter. Is it simply my O2 sensors downstream or is it my catalytic converter. Should I just try using high octane gas or should I replace sensors?

I would start using high octane gas first. From my experience if you have the P0430 code the Catalytic Converter is the most likely cause of the problem, I have never seen the O2 sensors fixing a P0430 code, but some other users claimed that replacing the sensor could fix the problem.

Hello. I have po430 Toyota Highlander 2006 reading catalytic system deficiency below bank 2. V 6 3,3

More than likely the problem is the Three-way Catalyst Converter Bank 2. You could try using high octane gas for a couple of weeks to see if that make any difference.

I have a toyotacamry 2003 and it never showed a check engine light ..oneday the exaust started leaking ..i gave it to a welder to seal up and afterwards like the third day p0403 showed up when i scaned and the check engine light came on what do i do

You could try clearing the code and use high octane gas for a couple of weeks. If the problem persists you have to replace the Catalytic Converter.
It's possible that the Catalytic Converter got damage during the exhaust repair.

I have 2004 Toyota sienna with 150000 miles. P0430 code started to appear. Bank
2 below threshold
What location does it mean?

I have 2004 Toyota sienna with 150000 miles. P0430 seems to appear. Bank 2 below threshold
What part of location is it?

You need to replace the Bank 2 catalytic converter. The Bank 2 catalytic converter is in front of the engine.

My mechanic told me that I needed to replace the catalytic converter bc code PO420 was showing. After replacing that and the 2 sensors, I'm now being told that code PO430 is showing and didn't show before so now that one also needs replacing. Has anyone ever heard of that before or know why PO430 wouldn't show up initially? This is a VERY costly repair (they already put in the one CC). I have a 2006 Sienna with 165K miles.

The section of this page that is titled as "When is the code detected?" mentions "Bank 1" two different times. Shouldn't that be "Bank 2" for this page?

Thank you for your feedback! we have changed the information.

i previously had codes, but after changing my air/fuel and o2 sensors. i haven't gotten any check engine or codes since. however, i'm trying to get my computer to say ready for the catalyst
i have passed the evap, 02, 02 sensor heater. catalyst efficency is incomplete. how long does it take for the drive cycle

Dependents on your driving habits. What model and year is your Toyota? I may be able to get the driving pattern for your vehicle.

2004 sienna awd limited. I ended up ordering a new catalytic converter. I noticed techstream for bank 2 is showing zero for the catalyst efficienncy. But bank0 the efficiency number keeps changing. $600 spent better then a used van for 15-20k

I have a 2016 tundra with 50,000 miles. I had P0437 come up twice on two separate occasions. They cleared the code both times. Everything was fine for about two weeks, and now check engine light came on again. This time I get the code P0430. Any suggestions on where to start?

A faulty Three-way Catalyst Converter Bank 2 is the most probable cause of the problem, but you could try using high octane gas for a couple of weeks. Sometimes bad gas will also cause the problem.

I have always used the highest octane available in my area.

My 2004 Sienna check engine light will come on after driving it for a while then sometimes it might stay on for a couple days then it will be off when I start the car randomly. It might stay off for a week or so then randomly comes back on. Wouldn't that be a sensor. Oh its the P0430.

Usually it is not the sensor, there are other codes for the sensor. More than likely the problem is the catalytic converter itself. Before you replace the catalytic converter, try using a different brand of gas and use high octane gas for a couple of weeks. If the problem persists, then you must replace the catalytic converter to fix the problem.

2008 Toyota Tundra crewmax (207,000) has 2 catalytic converters- my question is- does a code tell which cat is bad?.. or do I need to run further testing?-
For $400-$500 a pop, I’d hate to replace both if I don’t have to

P0430 is for Catalytic Converter Bank 2 which si the passenger side, after the front Oxygen sensor

Thank you