2005 honda odyssey error code p0420

You like your car, so you take it to be looked at. Fix code P0430 Code P0430 Catalyst System Efficiency Below Threshold ( Bank 2) NOTE: Codes P0420 and code P0430 are similar. I wrote a much more detailed explanation of how an emission system works and what causes these codes. honda odyysey 99 - trouble code o1456, and pis a fuel temp sensory circuit 420 is a catalyst below threshold, check fuel cap. or could be the two way vavle on your evaporator stuck Sep 10, | Honda Odyssey. Radio reset code in 5 minutes for a + Honda CRV CR- V Accord Civic Pilot Element Odyssey Insight - Duration: 5: 27. Zawbone 1, 493, 117 views. Dodge Caravan: a minivan my 2 choices are a Honda Odyssey I want to buy a minivan my 2 choices are a Honda Odyssey or a Dodge Caravan which vehicle doesn' t have a 3. 3 l engine which my mechanic says is difficult to work on and which van is going to. what is engine code p0420 - Catalytic Convertor and/ or downstream O2 sensor issue. Some forums and other websites say the O2 sensor is not involved, others do, but what they all agree on is the cat. The vehicle stability control ( VSC) light and code P0420 are for two different problems. The VSC system would need to be tested for codes for that system. The code P0420 is for the O2 sensor or problem with a catalytic converter problem and would need further testing of the sensor to see what is the cause of the code. Honda Accord P0420.

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    1999 Honda Accord Mil Code P0420. I Have A Problem With The Same Code ( p0420) Coming Back. I Own A Actron Auto Scanner Model. I have a Honda Odyssey with a 3. The engine light came on and It produced a code P0420. What is that - Answered by a verified Mechanic for Honda. Tech notes As the code description implies the P0420 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). How To Diagnose Trouble Code P0420 Catalyst Efficiency Below Threshold ( Bank 1) START HERE: You can verify the state of the catalytic converter to see if it has fried or not. So this engine code article applies to Nissan, Toyota, Chevrolet, Ford, Honda, GMC, Subaru, VW, etc. P0420 is one of the more common trouble codes that we see. Other popular codes include P0171, P0300, P0455, P0442, etc. P0420, at the suggestion of the Honda Dealer, changed out the gas cap and cleared the code. Drove it 4 months In the spring P0420 code came up from a CEL. Ah yes, the dreaded P0420 code ( is a standard OBD II code used by all vehicle mfgrs).

    I have a Honda Odyssey van with this same problem, and it is a well- known issue with them. The catalytic converter gets a wee bit tired ( but still functioning and well within emission limits) and this code is set. How to fix Code P0420 What is code P0420 Catalyst System Efficiency Below Threshold. When attach a trouble code reader and come up with a P0420, your first assumption may be that you need a new catalytic converter, simply because the words catalytic converter are mentioned in the code. SOURCE: Question regarding a honda odyssey 1999 check engine light codes. Ramon P0420 relates to the catalytic converter. The computer sees little or no improvement in the exhaust before and after going through the converter. This Diagnostic Trouble Code ( DTC P0420) relates to the efficiency of the catalytic converter on Bank 1. Bank 2 Code is a P0430. This stored Diagnostic Trouble Code ( DTC P0420) is not definitive enough to just replace the parts based upon its’ indication. Re: P0420, P0430 codes Recently I became the owner of Sienna with 147000 miles; after a month it started with code P0420; with all due diligence and research, i decided to start with a low cost option. At the dealership, the diagnostic gave P0420 code " internal fault w. My husband just paid $ 1900 to have the catalytic converter replaced in our Honda CRV with 202k miles.

    The check engine light appeared 2 days ago. As the code description implies the P0421 Honda 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). This is the second time in about 2 years I have taken my Honda Odyssey for the check engine light but have taken it to various repair shops. A P0420 code is a trouble code on OBD- II equipped vehicles. All vehicles from 1996- newer sold in North America support this generic powertrain code. This code is a pretty common one and this site is here to help the average do- it- yourself ( DIY) car owner ( like you) troubleshoot, diagnose, and fix their vehicle themselves when presented with a. odyssey engine light on, code p0430, help Welcome to Honda Odyssey Forum : Odyssey Minivan Forums – General discussion forum for Honda Odyssey Welcome to Honda Odyssey Forum : Odyssey Minivan Forums - a website dedicated to all things Honda Odyssey. Hello, I Inherited A Honda Odyssey 3. 8 Liter Engine And After Driving It The Engine Check Light Came On. Used A Code Reader, And.

    Asked by Anonymous ·. 18th Nov, 12: 41. I am at 78000 miles, I just replaced my transmission, two engine mounts and now my check engine lights came on, a honda mechanic indicated that it is the catalytic converter and its under warranty to 80K. P0420 Catalyst system efficiency below threshold ( Bank 1) 4, 5 P0421 Warm up catalyst efficiency below threshold ( Bank 1) P0422 Main catalyst efficiency below threshold ( Bank 1). Page 4 of 5: P0420 Catalyst Efficiency Below Threshold ( Honda 2. TEST 4: Manually Inducing a Rich Condition to Test the Downstream Oxygen Sensor. Catalytic Stopped Working. Honda Odyssey P0401 solution and trouble shooting for clogged EGR valve and port with parts list and video. This is an easy fix that will save a lot. Tech notes If the P0171 is combined with the P0174 code, it' s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. I have a Honda Odyssey with 90000 miles.

    Lat last year around Oct/ Nov time frame, check engine light came on. I took my vehicle to a local Auto Zone store and they scanned the code and told me it was P0420 - bad catalytic converter. Hi Eric, I recently asked you the following question: Question for you. I have a Honda Odyssey. Last year had P0420 code on my van. Researched it quite a bit and ended up replacing the Cat Converter with a Magna flow cat. 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. Since you have the code P0420, which is a bad code and refers to the catalytic converter, please get a 2nd opinion ( which I did) and get it checked out the right way. through the computer and full diagnostic on the Check Engine Light. I just bought a used Honda Odyssey last week with 41, 000 mi.