Question about 2002 Toyota Sienna

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Need to replace right bank catalytic converter, need to know cheapest way

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Autozone has inexpensive cat. converters & 02 sensors.

Posted on Mar 22, 2011

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Posted on Jan 02, 2017

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What does code PO431 mean on 03 Kia XL. My check engine light is on. Auto zone said I needed to replace Catalytic Converter(s). Does anyone know how many Catalytic Converters are on it?


code p 0431 refers to warm up catalytic converter, bank 2--efficiency below threshold === causes ---cat converter---wiring---HO2S sensor 2
it should be a v6 engine as it has 2 banks , bank 2 is the one closest to the grill.
there should be 2 cat converters ( one for each bank)
from the suggested causes , I suspect that the HO2S sensor is not performing properly and is not providing the correct mixture to the cat converter to make it operate properly
if you bump the cat converter with the hand and it rattles , it will need replacing and autozone would be right
However I am always of the opinion that you should seek other advice from an accredited exhaust specialist shop and get a quote as cat converters are not cheap

Jun 24, 2016 | Kia Cars & Trucks

1 Answer

Catalytic Converter Replacement Repair Cost


code p0420 refers to catalytic converter system bank 1 --efficiency below threshold ===causes -- catalytic converter ---wiring---HO2S 2 sensor
The cheapest part to replace is the HO22S sensor so I would do that first. Bump the cat converter soundly with the heal of your hand and if it rattles it needs replacing as it will be cracked internally. Dismiss any tinny rattle as that will be the heat shield loose
The time taken to replace both in an accredited shop will be less than 1 hour so it may pay to shop around and compare prices on the converter and labour costs.

Feb 15, 2014 | 2005 Toyota Highlander

1 Answer

See a visual diagram of heat oxygen sensor bank 1 sensor 2 for ford taurus 2001


bank 1 exhaust is the rear manifold towards the windshield side. Follow the exhaust down. There should be one oxygen sensor before the catalytic converter and a monitor after the catalytic converter. Be Careful.. they look the same.

Nov 26, 2012 | 2001 Ford Taurus

2 Answers

Need to pass emissions test, dianostic test - Catalyst efficiency blow threshold (bank 1) tried to order part - now I need to know if it pre or post, left or right Oxygen sensor, can it be determined by...


Yes it can be determined by the DTC (Data Trouble code). If the DTC is P0420 (catalyst system efficiency below threshold Bank-1) then the side of the engine with the #1 spark plug and cylinder is always Bank-1, and the O2 sensor that monitors the catalyst efficiency is usually after or (post) of the catalytic converter.

The #1 cylinder is located at the front spark plug on the right or the passenger side of the vehicle, so Bank-1 is on the right side of the vehicle, and the O2 sensor that monitors the catalyst efficiency should be located after or (post) of the catalytic converter. It would be the post right O2 sensor.

There is also the possibility that the catalytic converter is actually starting to fail, and if changing the O2 sensor and clearing the DTC does not solve the problem them the catalytic converter is most likely faulty.

Aug 12, 2010 | 2002 Jaguar X-Type

3 Answers

Po420 code monte carlo ls 2001


PO420 code is for catalyst system efficiency below threshold (bank 1) Usually it means that it is time for a new catalytic converter on bank number 1. Cylinder bank number 1 is always the bank with the number 1 spark plug in it.

Apr 20, 2010 | 2001 Chevrolet Monte Carlo

3 Answers

Code po430 not sure what maybe converter


One of three (3) possibitlies:
1. Catalytic Converter is malfunctioning.
2. O2 Sensor is malfunctioning. This will be the O2 Sensor located on the Catalytic Converter. However you should check and/or replace both sensors if needed.
3. You have an Exhaust Leak.
In Order of checking:
A. Check and Repair any Exhaust Leak.
B. Replace the O2 Sensor on the Catalytic Converter 1st. Also Known as the Downstream O2 Sensor or HO2 Sensor.
C. Replace the O2 on the Exhaust Manifold prior to the Catalytic Converter. Also Known as the Upstream O2 Sensor.
D. Replace the Catalytic Converter.
Let me know if this helped, or if you have any additional information, problems or questions. Feel free to contact me at FixYa.com!

Feb 01, 2010 | 1998 Ford Explorer

1 Answer

Replacing my bank 2 catalytic converter - 2000 mercury cougar


what does code P0430 cat bank 2 mean? how many cat. converters does my car have? which one do i need? on my 2000 Mercury Cougar 2.5 liter auto trans.

Sep 01, 2009 | 2000 Mercury Cougar

1 Answer

Need to know which side of vehicle is bank 2


The sensor bank 2 sensor 2 is on the right side after the catalytic converter

Jan 07, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Engine code 430


did you use oem catalytic converters????? the aftermarket converters break down very fast. thats why they are cheap. we have to replace them all the time due to bad catalytic converters.

Oct 06, 2008 | 1998 Chevrolet Suburban

2 Answers

Check engine,2000 Nissan Maxima


HI
yes there is two catalytic converters ???
one for any exhaust pipe bank (left & right) (bank 1 & bank 2 )
if you change the bank 1 ?? may be you need to change the bank 2 today?????
but not to change the same bank two time ???????

ask for more information
WITH MY BEST WISHES

Jul 07, 2008 | 2000 Nissan Maxima

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