Question about 2004 Suzuki Forenza

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How many cat converters does car have and where are they , if 2 do you have to change both

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I believe it only has one below passenger floor board

Posted on Nov 12, 2009

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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

How many o2 sensors does a 1998 oldsmobile #.8 engine have


if it has 2 cat converters , it will have 2 -one after each cat converter
the sensors before the cat converter in the manifold or pipe/s are heated oxygen sensors and have a different operation to oxygen sensors

Mar 29, 2016 | 1998 Oldsmobile Intrigue

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How many 02 sensor and how many wire each sensor


depending on the engine make
v8 and v6 have 2 oxygen sensors( O2S) , one after each cat converter with 2 wires and 2 heated oxygen sensors ( HO2S) in the exhaust manifold/ pipe before the cat converter with 4 wires each
6 cyl and 4 cyl engines have one oxygen sensor after that cat converter and one heated oxygen sensor before the cat converter

Mar 24, 2016 | Cars & Trucks

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2003 ES. What are the probable causes of DTCs P0421 and P0431?


code p 0421 refers to warm up cat converter bank 1--efficiency below threshold ===causes ---cat converter---wiring---HO2S 2
( heated oxygen sensor)
code p 0431 refers to warm up cat conveter bank 2--efficiency below threshold === causes cat converter --- wiring---HO2S 2
as the same HO2S appears in the cause of the fault I would be inclined to change it first
the HO2sS sensor is the one in the exhaust manifold or before the cat converter
and 2 is in the front bank of a V engine
use the special socket when removing/ replacing these sensors as an incorrect tool is the main reason for wire failures on the sensors

Dec 17, 2015 | 2003 Mazda MPV

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I did a computer reading on my Tayota Tacoma 1995 it stated the o2 senor 1 & 2 as well as the EGR? Any way after changing the sensor 1 it no longer read sensor 2 needing change. My truck still i


if the codes read a EGR problem then that has to be fixed and not what the mechanic changed
Remember parts are available on line from anywhere in the world
sensors are different in construction so be aware that sensors before the cat converter are in fact HO2S ( heated sensors) while the one after the cat converter is a O2 sensor. They work in conjunction and signal the ECM program if the fuel mixture and cat converter is correct so that the fuel mixture cam be adjusted to keep the engine in tune.

Feb 10, 2015 | Cars & Trucks

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O2 sensor?


O2 sensors are always after the cat converter and HO2S sensors are always before the cat converter.
p0135 refers to heated oxygen sensor(HO2S) 1 bank 1-heater control--circuit malfunction
If it is a straight 6 cylinder engine with 2 cat converters it will be the sensor before the cat converter that connects to the manifold from pistons 1.2.3
If it is a V6 it will be the sensor that is in front of the cat converter that connects to the rear bank pistons 1.2.3. Use the special socket when removing/replacing the sensors to prevent wiring damage

Apr 23, 2014 | 2004 Chevrolet Silverado 2500HD

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Nissan online mechanic


code p 0432 is main cat converter bank 2 --efficiency below threshold ===causes -- cat converter---wiring heated oxygen sensor (HO2S ) in the bank 2 manifold before the cat converter
ave a compression test done to determine inlet valve seat insert loose
if you have a problem with it there should be a bit of a miss, or it should change with rpm
could be a cam lobe failing and the noise should change with rpm

Aug 07, 2017 | 2003 Nissan Maxima

1 Answer

Had code p0058 come up, so i replaced the co2 sensor. After a few days engine light came on with code p0158....which appears to be almost the same code. whats causing p0158 if ive already changed the...


This vehicle is equiped with 2 O2 sensors 1 is before the Cat converter and 1 after the Cat converter this code is for the 1 after the Cat converter or the most rear sensor not the first 1 change the farthest one from the engine and your problem should be solved.

Apr 29, 2011 | 2004 Dodge Durango

1 Answer

2001 toyota sienna, 6cyl 3l, must accelerate very slowly from stop or van seems to bog down badly, may take 2 miles to get to 55 mph, going up bridges it bogs down very badly, diagnostics indicated...


Brake loose connection between cat and exhaust manifold , it will allow exhaust gas to go out before cat , and see if it's restore the power on the engine.
If it does then your cat is clogged.
If not it's also might be Throttle Position Sensor , or Mass Air Flow Sensor.
You can't remove cat , you have to replace it if it's bad. Cat is a part of Emission control system.

Aug 29, 2010 | 2001 Toyota Sienna

1 Answer

Where is the location of the bank one sensor one o2 sensor on my 2003 chevy suburban


bank 1 on a chevy is on the drivers side youll have 4 O2 sensors sensor 1 bank 1 is on the engine side of the cat converter sensor 2 bank 1 is after the cat converter (drivers side )
bank 2 is on the passenger side sensor 1 is pre cat sensor 2 is post cat converter

Mar 18, 2010 | 2003 Chevrolet Suburban 1500

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