Question about 2002 Mazda MPV

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Where is bank 2 catalytic converter located?

Hi, I got a code on my 2002 MPV and it said heater below threshold bank 2 catalytic converter. Any advice please or diagram? THANK YOU in advance.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 625 Answers

SOURCE: Check engine light.

ok the bank 1 is where the cilinder one is get a firing order and see where is the number one cylinder that's the bank one
then follow the exaust and replace the sensor after the catalitic
or converter

Posted on May 29, 2008

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j_del
  • 1586 Answers

SOURCE: I have a 2004 Mazda

It can be hard to say which it is, because either one will trip the the code, but in this case I'd place my bet on it being the O2 sensor because it says "warm up" - the O2 sensor has to be up to temperature (around 900 degrees) to function. The computer watches for the O2 sensor to heat up in a certain amount of time, and if it doesn't get to temperature soon enough, the computer diagnoses a faulty heater for the O2 sensor and trips the code.

For the record, this would be the secondary O2 sensor, the one after the cat. That's the one that is used to determine cat functionality and efficiency. The primary sensor, before the cat, is used to fine-tune the fuel delivery.

Posted on Aug 08, 2008

localwonder
  • 6784 Answers

SOURCE: Three trouble codes

Trouble Code: P0421


Catalyst Efficiency Below Normal (Bank 1)

Possible Causes:

Air leaks at the exhaust manifold or in the exhaust pipes
Catalytic converter is contaminated, damaged or has failed

Front HO2S and/or the rear HO2S is loose in the mounting hole

Front HO2S older (aged) than the rear HO2S (HO2S is lazy)

Front HO2S or rear HO2S is contaminated with fuel or moisture


Trouble Code: P1173

HO2S-21 (Bank 2 Sensor 1) Circuit Malfunction

Possible Causes:

Base engine mechanical fault affecting one or more cylinders

EVAP Purge valve stuck or the hoses to the valve are reversed

Fuel metering fault (fuel injector sticking open or leaking)

Fuel pressure too low or too high, fuel supply contaminated

HO2S element is contaminated or the HO2S heater has failed

PCV system has air leaks at the valve or related hoses



Trouble Code: P0174
Adaptive Fuel Trim Too Lean (Bank 2)

Possible Causes:

Vehicle driven low on fuel or until it ran out of fuel

One or more injectors restricted or pressure regulator has failed

Fuel delivery system supplying too much or too little fuel during cruise or idle periods (e.g., faulty fuel pump, or dirty fuel filter)

Air leaks after the MAF sensor, or air leaks in the PCV system

Air leaks at the EGR gasket, or at the EGR valve diaphragm

Exhaust leaks before or near where the front HO2S is mounted

HO2S is contaminated, deteriorated or it has failed

Fuel control sensor is out of calibration (i.e., ECT, IAT or MAP)

Base engine -mechanical- fault affecting one or more cylinders

Posted on May 18, 2009

elshaddai159
  • 1016 Answers

SOURCE: I need to replace my mazda mpv catalytic

Ok the fastest way to solve weather it is the cats in the exhaust system is to take it too a exhaust specialist and ask them to do a exhaust pressure test. They should have all the pressure drop data there and can tell you if there is to much restriction in the exhaust, if there is to much chances are they will be the cats, usually the front one. Yep your dad is correct with his theory, but excessive overfuelling will also cause the cats to build up excess heat and start to melt, or fall apart. So get a good service when your able too, plugs/filters and oils. Yep your firing order is correct.

Posted on Apr 03, 2010

Testimonial: "Good detail, which specifically addressed each part of my question. Advice is directly on point and with layman's terminology. Extremely useful. "

  • 1 Answer

SOURCE: Mazda MPV 2003, Engine light on, code P0421 - warm

could anyone please help me with this problem that i have with my 2001 mazda protege es 2.0. i have a bad catalyst converter and im waiting for the converter to come in, but before the guys that are fixing on my car relize that i need a converter they put a egr valve and a o2 senor and when the car idle some time it will just die one me. could someone tell me what is going on.

Posted on Dec 24, 2010

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2 Answers

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

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1 Answer

2002 mazda mpv sputtering


Error Code: P0421
Description:
Warm Up Catalytic Converter, Bank 1 - Efficiency Below Threshold
Possible Cause:
Warm Up Catalyst Bank 1 faulty.
Possible Solutions:
Check Warm Up Catalyst Bank 1 - Set Readiness.
Replace Warm Up Catalyst Bank 1.

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1 Answer

03 mazda mpv didn't pass inspection because of fault PO431?


Have the catalytic converter and your O2 sensor checked.

Apr 05, 2013 | 2003 Mazda MPV

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Code of PO174 1 system too lean (bank 1) Code PO420 Catalyst efficiency below threshold (bank 1) Code PO430 Catalyst efficiency below threshold (bank 2)


hi,my friend, you can try,

Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required.

Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady).

Inspect the downstream heated oxygen sensor (HO2), replace if necessary

Replace the catalytic converter

Sep 14, 2011 | 2003 GMC Yukon XL

1 Answer

2 codes 1) P0420 catalytic converter system below threshold (bank 1) 2) P0420(Pd) catalytic converter below threshold (bank 1)


possible causes for code po420 airleaks at the exhaust manifold or in the exhaust pipes,base engine problems high engine oil or coolant usage,catalytic converter is damaged contaminated or has failed,continuos engine misfire conditions or weak or low coil out put,front HO2s or rear HO2s is contaminated with fuel or moisture,rear HO2s is loose in the mounting hole,front HO2s older aged than the rear HO2s or HO2s 1 - 2 is lazy.

Mar 31, 2011 | Chevrolet Equinox Cars & Trucks

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Getting OBD codes p0420 and p0430, how to fix these issue with my 2001 Audi A6


2001 Audi A6
EOBD code: P0420
Fault location: Catalytic converter system, bank 1 - efficiency below threshold
Probable cause: Catalytic converter, wiring, heated oxygen sensor 2 (downstream)

EOBD code: P0430
Fault location: Catalytic converter system, bank 2 - efficiency below threshold
Probable cause: Catalytic converter, wiring, heated oxygen sensor 2 (downstream)

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1 Answer

Were do i locate the two sensors p0420 and p0430


Those codes don't indicate a failure of any particular sensor. They are codes for the bank 1 and bank 2 catalytic converters. The computer uses the oxygen sensors in front of and behind the catalytic converters to determine how well the converters are working. If the efficiency of the converters go below a specific threshold the computer will set the codes you got. Common repairs for this code include replacement of the catalytic converters (most common), failure of the front o2 sensors (slow switching rate) or a computer reprogram.

Aug 02, 2010 | 2002 Ford Escape

2 Answers

What are codes P1492, P0421 & P0431 on the 2002 Mazda Millenia?


po421 warm up catalyst efficiency below threshhold bank 1, 431 same on bank 2..

Feb 08, 2010 | 2002 Mazda Millenia

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

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