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Po420 Po430 Po615 C1729 Vehicle will not run - Cars & Trucks

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raygin
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SOURCE: how do i fix code po420 & po430 on 2003 jaguar

Both these codes relate to Catalyst efficiency below threshold on banks 1+2. This is normally caused by a combustion fault. This fault may be shown due to a faulty sensor in either air imput or exhaust systems, Get the memory read at a dealers or good garage. If you had a serious problem the car would not drive well.
Hope this helps - good luck.

Posted on May 12, 2009

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Code po430


PO420 right exhaust converter failed
PO430 left exhaust converter failed
You can Google any codes you get & study/learn
whatever
The converter should last closer to 15 years ,so I suspect
the motor hasn't run well for some parts of it's lifetime
Too much fuel & cylinder misfires ruin converters
This is a growing problem as people just never work on
vehicles any more until they break down.
The new technology of the last 30 years won't compensate
for that,in fact they require a lot of checking over at least 3 times
a year.

Aug 08, 2013 | 2001 Lexus IS 300

1 Answer

Po430 nissan frontier need diagram


PO420 is bank #1
PO430 is bank #2

Bank # 1 is always where cylinder #1 is
& Bank #2 the other side of motor

Google the question if you don't know the firing order
or location

Jan 29, 2013 | 1998 Chevrolet K1500

1 Answer

Bad catalytic converter symptoms


First is a PO420 or PO430 obd2 code

Converters should last 12 to 14 years

Next --if it has completely failed & melted the
honeycomb inside,then it is blocked & you go
about 30 mph at best

A clogged gas filter will do the same & get you
to about 50mph

You should not have a converter issue on a 2008 vehicle

Want to provide more info?

Dec 01, 2012 | 2008 Hyundai Elantra

1 Answer

What does a po430 code mean on a mercury cougar


EXHAUST RELATED ERROR CODES

There are 711 possible PO generic DTC error codes. Only 7 of the 711 codes are exhaust related.

PO401: Insufficient EGR Flow

PO402: Exhaust Gas Recirculation (EGR) Excessive Flow Detected

PO410: Secondary Air Injection System Malfunction

PO420: Catalyst System Efficiency Below Threshold (Bank 1)

PO421: Warm-Up Catalyst Efficiency Below Threshold (Bank 1)

PO430: Catalyst System Efficiency Below Threshold (Bank 2)

PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2)

THINGS TO ASK YOURSELF OR YOUR CUSTOMER

Have there been any driveability or performance issues with the vehicle, have there been any recent repairs or tune-up work performed, if so was the check engine light reset and were the codes recorded on previous repair orders.

Do not rely on scan tool data alone. In most applications, the customer will have the check engine light reset prior to repair. If the original cause of converter failure is intermittent, only the catalyst failure code may show up

Nov 04, 2012 | Cars & Trucks

2 Answers

Got a po420 and po430 in my 04 nissan titan. im tired of guessing. any help?


i have the same problem with mine and endit up being the trio cat mufflers under the vehicle
hope solve the problem if not tel me what happend bye
carlos

Oct 04, 2010 | 2005 Nissan Armada

1 Answer

Po420 bank 1 and po430 bank 2 error codes


sounds like O2 sensors to me. I havent changed one on a mustang yet but I havent had any trouble with any others that I have done, they screw in like a spark plug but you will need a special tool, I hope this helps you.

May 13, 2010 | 2007 Ford Mustang GT California Special...

1 Answer

How do i fix code po420 & po430 on 2003 jaguar


Both these codes relate to Catalyst efficiency below threshold on banks 1+2. This is normally caused by a combustion fault. This fault may be shown due to a faulty sensor in either air imput or exhaust systems, Get the memory read at a dealers or good garage. If you had a serious problem the car would not drive well.
Hope this helps - good luck.

May 09, 2009 | 2003 Jaguar S-Type

1 Answer

98 silverado codes po420,po430,po446


if the cat was pluggin you would see this as your going down the road it would not get to top speed .. They act up usually only run 40 top speed.

Apr 12, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

All my blinkers and brake lights stopped working when the hazard light button was pushed. The hazard lights do not work either. I replaced the hazard warning flasher and the fuse and still no go.


PO430: Catalyst System Efficiency Below Threshold (Bank 2)

Here is a site that you should go to and further look at the common problems with your catylitic converter, and also your other emissions systems. Hope it helps, and please rate!!!

http://www.discountconverter.com/catalytic_converters_news/news_page.cfm?Key=codes-po420-po421-po430-po431&News=120

Mar 15, 2009 | 1994 Plymouth Sundance

1 Answer

I got code PO420 and PO430


Here are the most common problems,

Air leaks at the exhaust manifold or in the exhaust pipes. Catalytic converter is damaged, contaminated or has failed. Front HO2S or rear HO2S is contaminated with fuel or moisture. Front HO2S and/or the rear HO2S is loose in the mounting hole. Front HO2S older (aged) than the rear HO2S (HO2S is lazy)

Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. Autozone turning the light off does nothing for you, and is against their company policy. If you do not have the proper tool, reference materials or experience I would take it to a professional. Finding out the trouble code is just he start of the diagnosis process.

Hope this helps.

Dave

Feb 28, 2009 | 1996 Nissan Sentra

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