Question about 2003 Honda CR-V

1 Answer

I have a honda crv with a p0420 Bank 1 code. My car drive just fine it is in great shape I'v e always taken good care of it. but I can't pass NYS inspection can anyone help me? honestly

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

Bank 1 oxygen sensor needs replaced. also know as upper oxygen sensor.

Posted on Jan 18, 2013

  • Alejandro Rascon Jan 04, 2014

    Hi if you are close to Anaheim ca send me an email. I can help. For a lot less. cansforchrist@yahoo.com

  • John Lyden
    John Lyden Dec 31, 2015

    05 Honda CRV , p0420 "check engine"light comes on intermittently, last time it came on ,engine was cold . Light came on on startup. No problems with engine. What is problem?

×

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

vitaforall
  • 44 Answers

SOURCE: 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.

Posted on Jan 06, 2009

  • 67 Answers

SOURCE: 2001 Honda - New Catalytics & O2 sensors -- new 0420/1739/1456

I would send the car for a smoke test for the emissions leak...Find out where the leak is comming from..Repair it..Reset the codes, then do a drive cycle and see what happens...

Posted on Feb 19, 2010

motor1258
  • 6674 Answers

SOURCE: '99 Accord: P0420 and Sometimes Engine Hesitation & Rough Idling

First thing I'd try is some "heet" or similar additive in tank to remove moisture, then refill with gas from a busy station & drive it for a while and see what happens.

Posted on Jan 02, 2009

  • 218 Answers

SOURCE: Catalytic Converter Noise, Code, and Replacement

CAN'T TELL U IF THE NOISE IS FROM THE CONVERTER BUT THEY DO COME APART AND CAN SOUND THAT WAY.AN AFTERMARKET CONVERTER WOULD BE FINE AS LONG AS IT IS FOR SALE IN YOUR STATE(NO CALI)

Posted on May 04, 2009

  • 811 Answers

SOURCE: Catalytic Converter for Honda CRV 2002- cost/necessity of repair

run scanner for trouble codes, some auto parts stores will do this for free

Posted on Oct 09, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

On the 2004 honda crv along with code 1259vtec, l also have code 0420 which deal with the oxygen. If I upgrade the gas and put in lucas fuel injection cleaner, is it possible to correct the condition


NO--- code p0420 refers to the catalic converter system, bank 1 --efficiency below threshold===causes --cat converter, wiring-HO2S sensor 2
code p1159 refers to heated oxygen sensor (HO2S) -front circuit low voltage positive terminal===causes--wiring--HO2S--ECM programming---ECm

In both codes the heated oxygen sensor is mentioned so I would have it replaced before I spent money on a cat converter.

Feb 09, 2015 | 2004 Honda CR-V

2 Answers

My 2003 altima has a check engine light for about 2 weeks. I just started getting my battery and brake lights fluttering.hooked computer up to it. It said code p0420 catalytic converter low threshold.


Very common code on the Altima. You will need to replace your manifold/converter. There is also some concern over the converter material getting back into your engine causing further damage. You need to take care of this asap. IT WILL NOT BE AN 02 SENSOR!! Please don't let anyone tell you otherwise. for further information google QR25DE converter issue and happy reading. Many guys have replaced their converters with a header for piece of mind.

Nov 05, 2014 | 2003 Nissan Altima

1 Answer

I've had a trouble code( P0420) code come up,


Catalyst System Efficiency Below Threshold (Bank 1). OK, now tell me that again in plain English please.... let's break it down: the catalyst system being referred to is your three-way catalytic converter; so the catalytic converter is not working properly (i.e. it's not efficient). Bank 1 refers to the side of the engine which contains cylinder #1. On inline engines such as 4 & 5 cylinder engines, there is only one bank. So, to really simply things let's just say that the efficiency of the catalytic converter and/or exhaust pipe and/or O2 sensor is not so great. Hope this helps.

Mar 09, 2013 | Cars & Trucks

1 Answer

P0420 code evap system


This is not an evap code. Read on:
P0420 - Catalyst System Efficiency Below Threshold Bank 1

Possible causes- Three way catalyst converter Bank 1
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module (ECM)
Tech notes The most common cause it the three way catalyst converter Bank 1. Changing just the O2 sensor usually don't repair the problem. If the P0420 code is combined with other codes, try fixing the other codes first.

Nov 02, 2012 | Cars & Trucks

1 Answer

My engine light is on so i took an OBD reading and it showed the error codes P0401, P0420 and P0133. What do I need to fix?


P0401 is EGR valve, low circulation detected.
P0420 Catalyst system.
P0133 is O2 sensor bank 1 sensor 1.
All these codes are emissions related, so i would start with the EGR valve, it's probably clogged with carbon. The catalytic converter could be also, check that for excessive backpressure. The oxygen sensor can be tested, replace if needed. Good luck, i hope this helps.

Jul 29, 2011 | 2000 Honda Prelude

2 Answers

Engine light stays on, code is p0420 low thresh bank 1.... where is bank 1 located


I'm not sure you understand the difinition of OBD2 fault code P0420, it means that Catalytic converter in the exhaust that is connected to the engine cylinder bank that contains number one engine cylinder has fallen below the a allowed threshold of cleaning pollunts from the engines exhaust stream. I would be more specific but you have not given model or year of the Mercury you have.
Here is the full difinition of OBD2 fault code P0420 from the factory service information system.


P0420 - Catalyst System Efficiency Below Threshold (Bank 1)


Possible causes - Three way catalyst converter worn out
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module

Jun 07, 2011 | Mercury Cougar Cars & Trucks

1 Answer

I am a master tech for a gm dealership. I have dealt with many domestic driveability issues, however I drive a 2003 tundra 4.7 v8. While I take some grief from my fellow employee's, I drive the toyota...


#1 When you replace 02 sensors you should always replace all of them. Otherwise the new 02 sensor will be returning its Data back to the computer faster than the other old ones and this in itself may cause problems. #2 the P0420 indicates that the Catalysts System Efficiency is below the threshold on bank #1 And yes put in all new sensors and that means bank 1 sensor #2 as well. And then if the P0420 code returns replace the Catalatic converter on Bank#1.Please let me know the results. Good Luck and have a good XMASS.

Dec 15, 2010 | Toyota Tundra Cars & Trucks

1 Answer

Need info on codes PCM.P0134 and P0420


Both codes are for the oxygen sensors.
P0134 oxygen sensor on bank #1, sensor #1 is bad.
P0420 oxygen sensor on bank #1, the sensor down by the catalytic converter, is also bad.

Mar 26, 2009 | 2003 Honda CR-V

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

2 Answers

Honda civic code PO420


Code P0420 Catalyst System Efficiency Below Threshold (Bank #1) Can't really say if driving it that long would cause damage.

Jun 14, 2008 | 2000 Honda Civic

Not finding what you are looking for?
2003 Honda CR-V Logo

1,579 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7772 Answers

Are you a Honda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...