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Obd code p0420 - 2006 Nissan Maxima SL

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That is a Catalitic Converter Code remove it from your car and let it Soak in in a bucket of water w/dish washing detergent over night then let it dry completely clear the code and reinstall it, that should clean the junk out of it. If the code code comes back on then you'll have to install a new one! Hope it works, cause they arent cheap... Good Luck...

Posted on Jan 21, 2013

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Posted on Jan 02, 2017

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My 2005 chevy equinox keeps showing problem code P0420 How do I fix this problem?


0 2 sensor near the catalytic converter or

replace the catalytic converter

The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar.

Read more at: https://www.obd-codes.com/p0420
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https://www.obd-codes.com/p0420

Feb 03, 2017 | Cars & Trucks

1 Answer

My 2004 dodge ram randomly hesitates while accelerating


P0420 & P0430 are catayltic coverter codes ! P0440 Evaporative Emission Control System Malfunction P0700 Transmission Control System Malfunction
P0760 = Shift Solenoid C Malfunction

Read more at: http://www.obd-codes.com/forums/viewtopic.php?t=10525
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Read more at: http://www.obd-codes.com/p0700
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Read more at: http://www.obd-codes.com/p0440
Copyright OBD-Codes.com

http://www.obd-codes.com/p0420 http://www.obd-codes.com/p0430 http://www.obd-codes.com/p0440 Sounds to me like you have some major problems and need to take your vehicle to a qualified repair shop .

Nov 26, 2016 | 2004 Dodge Ram

2 Answers

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...
    Feedback

    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

1 Answer

Can catalytic converter cause a PO65O code


Pesky PO420 Codes - Eastern Catalytic

www.easterncatalytic.com/education/tech-tips/pesky-p0420-codes/
One of the most annoying is the persistent PO420 diagnostic code (Catalyst System ... not only shows its teeth when the catalytic converter is on the blink, but can also be ... Most, if not all, catalytic converter failures are caused by a problem or ...

P0420 Error Code: Catalyst System Efficiency Below ...

www.obd-codes.com/p0420
Repair information for the OBD-II trouble code P0420 - Catalyst System Efficiency ... If they have failed, it is likely due to something else that caused it to fail. ... the catalytic converter is broken or failed, it may be restricting the exhaust which will ...

explaining trouble codes po420 - po421 - Discount Catalytic ...


Jan 16, 2016 | Cars & Trucks

1 Answer

P0420 Codes


P0420 Catalyst System Efficiency Below Threshold (Bank 1) heres a link that will explain that http://www.obd-codes.com/p0420 Please take a moment to rate my reply thanks

May 08, 2011 | BMW 528 Cars & Trucks

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

1 Answer

Fault codes p0420&p1406


catylist efficiency below threshold ( p0420 ). heres a probable fix. go to http://repairpal.com/obd-code-p0420----- this will tell what may be wrong as not to replace parts that are not bad.

Feb 17, 2010 | 1996 Chevrolet C2500

2 Answers

Trouble shooting P0420 code, bank 1, OBD II for 2000'?


misfiring can cause a P0420 code.
I would recommend a set of honda plug wires and plugs if the P0420 code returns.
I have used bolt in aftermarket bolt in catalytic converters but don't remember the brand name they fit ok and i have had 1 or 2 return with a P0420 code out of about 20. I have never replaced the oxygen sensor on a civic like yours.
I always fix the misfire problems, reset the computer, and have the customer drive it and see if the code p0420 returns. 50% don't have the P420 code return. drive it and see what happens and go from there.

Jan 06, 2009 | 2000 Honda Civic

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