Question about 2000 Chrysler Concorde

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P0420 catalyst efficiency below threshold

Give me the spare parts needed, the price, and the complete description of the problem

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Right you will need to find out if your car has a misfire could you tell me if its petrol or diesel?

Posted on Feb 10, 2009

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What means catalyst Efficiency below normal


      Got it scanned and it's P0420: Catalyst efficiency below thresholdbank 1. They said it could be a bad catalytic converter or oxygen sensor. I borrowed a scanner and tried to measure the oxygen sensor readings over time.Sep 8, 2011

      civic - Check Engine code P0420 Catalyst efficiency below ...

      mechanics.stackexchange.com/.../check-engine-code-p0420-catalyst-efficie...
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    P0420 Error Code: Catalyst System Efficiency Below ...

    www.obd-codes.com/p0420
    P0420 OBD-II Trouble Code. Technical Description. Catalyst System Efficiency Below Threshold (Bank 1). What does that mean? This diagnostic trouble code ...

    P0420 Code Fix How Its Done Catalyst Efficiency Below ...

    ? 4:25
    https://www.youtube.com/watch?v=-c8090n1Ihs
    Jun 20, 2014 - Uploaded by ACE AUTOS UK
    Here is a tutorial on P0420 code fix catalyst efficiency below threshold How To Diagnose a p0420 code ...

Jan 26, 2016 | Cars & Trucks

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Car sometimes will not start after sits for a day


Definition of Diagnostic Trouble Code P0420 Category: Powertrain Definition: Catalyst System Efficiency Below Threshold Bank 1Note: This definition of P0420 is applied to all manufacturers

Definition of Diagnostic Trouble Code P0430 Category: Powertrain Definition: Catalyst System Efficiency Below Threshold Bank 2Note: This definition of P0430 is applied to all manufacturers

As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0430 code is combined with other codes, try fixing the other codes first.

Jul 11, 2015 | 2006 Toyota Solara

1 Answer

1996 taurus p420 code


The P0420 means Catalyst System Efficiency Below Threshold (Bank 1), and the P0430 means Catalyst System Efficiency Below Threshold (Bank 2).
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ECU unlock immobilizer tool

Sep 17, 2012 | 1996 Ford Taurus

1 Answer

What do these codes mean ? po430 po420 po306 for mercury cougar 1999


P0430 code is(catalyst efficiency below threshold on bank 2)
P0420 code is((catalyst efficiency below threshold on bank 1)
P0306 code is(cylinder 6 misfire detected)

Dec 13, 2011 | 1999 Mercury Cougar

2 Answers

Check engine light on, code reads p0420


Hi and welcome to FixYa!

Code p0420 means Catalyst System Efficiency Below Threshold (Bank 1). This will surely needs attention to resolve the problem.

Hope this helps and thank you for using FixYa! Have a good one!

Jan 26, 2011 | 1999 Buick Century

3 Answers

I had my car inspected and received P0420 code? what does it mean?


P0420 Error Code: Catalyst System Efficiency Below Threshold (Bank 1) Repair information for the OBD-II trouble code P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
www.obd-codes.com/p0420

Feb 18, 2010 | 2000 Toyota Celica

2 Answers

Check engine light on. P0325, P0420 2000 Subaru


CODE PO420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK I * CODE PO325 KNOCK SENSOR NO.1 CIRCUIT MALFUNCTION BANK NO.1 OR SINGLE SENSOR

Nov 13, 2009 | 2000 Subaru Outback

2 Answers

Need to know whatDTC's P0420 and P0432 mean for my 2002/3 Jeep Grand Cherokee Laredo 4.7 ltr V8 Thanks Colin


420 is catalist below threshold bank one.
432 is catalist below threshold bank two.

Oct 20, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Toyota Camry 2004 P0420


well that's if I'm not mistaken, catalyst system efficiency THRESHOLD!!! it is "bank" when your description code explanes bank 1 that is a O 2 sensor anything says BANK is a Oxygen sensor = O 2 sensor.what is it doing shutting off when eng warms up or sputtering or nothing really out of normal behavior? these switches will loose all communication with computer or get stuck in 1 of three ranges each range behave differently! in each range the deal with these are these switches are a part of maintenance usa @ hundred thousand km they should be change for emission efficiency and fuel consumption and vehicle performance usually after 1 is changed 9 times out of 10 shortly after the next bank will produce eng light and so on!! I usually change both while I'm at it you know pay me now or pay me again later but twice as much! well hope this helps you out good luck cheers happy new year.John, Toronto,Ontario

Jan 03, 2009 | 2003 Toyota Corolla

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