p0400 and p0420 together on a Honda odyssey, not the cat . My parents have 2008 Honda odyssey that is throwing po400 and po420 with a awful eye watering smell and struggles to get into the last gear around 45 mph, and I'm not sure want is wrong with it. ... Code P0420 on Citroën C3 2018 (2019 first use). Is this normal on such a young car?John Clark. P0430 indicates a bad catalytic converter, not necessarily a bad O2 sensor. However, sometimes replacing the O2's will give you some time before having to replace it. I always start with a new O2 since, if you end up replacing the cat, you'll want new O2's anyway and, it sometimes resolves the cat code without replacing the cat.Honda is creating a dedicated EV division for the first time, as it attempts to catch up to its rivals in electrification of its lineup. Honda is establishing a division dedicated ...The P0420 generally means the downstream (post-cat) O2 sensor is not reading properly. That sensor should be pretty steady when the cat is doing its job. So if it fluctuates too much, as the upstream sensor properly does, it suggests a problem with the cat. It is known to be a flaky / possibly doubtful fault detection strategy.2WD. AUTOMATIC. 204,500 MILES. My minivan shakes when on the freeway going over fifty mph. If I take foot off the accelerator the shaking/vibration stops and engine runs smoothly. The car has not had a tune up anytime recent. Regular oil changes done at four to five thousand miles. Check engine light is on with code P0420 - Catalyst system ...Sep 27, 2021 · Does Cataclean really fix a P0420 / P0430 error code and catalytic converter. Cataclean Link: https://amzn.to/33t8RVQ Second channel for easy to follow Home ...Replacing my Cat - aftermarket that doesn't throw P0420? Alright, been getting P0420 on my 2000 EX 160K miles. My OBDII scanner doesn't do a running scan of sensors. I first replaced downstream (aft) with a Denso O2, the one removed was original NKK at 160K miles. Got another P0420.While the P0420 code has the same general meaning in any vehicle, its specifics can vary by make and model. Here's an overview of P0420 in some of the most common makes. Honda P0420 Trouble Code. In Hondas, P0420 is often triggered by a failed catalyst rather than oxygen sensors. It occurs most frequently in the Civic, Accord, CR-V, and Odyssey.DTC P0174: Front Bank (Bank 2) Fuel System Too Lean. Both codes can be from low fuel pressure, loose valve adjustment, or bad injectors. The fuel pressure needs to be verified first as well as the valve clearance as per the service manual. DTC P0420: Rear Bank Catalyst System Efficiency Below Threshold (Bank 1) This means the rear bank ...About a week after I did my first OCI using Valvoline 0w20 Protect and Restore oil, I got a P0420 code for catalytic converter low system efficiency. I checked my oil and found that it had gone completely dark, so I drained it and put in new 0w20 Kirkland oil. ... Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 110k miles - Bought brand ...https://www.ktecgarage.comDiscord: https://discord.com/channels/1219270237908893779/1219270238420340777I will be using aftermarket direct fit parts from Dorm...The O2 sensers are both monitored by the PCM and will generate codes if any of their conditions are out of spec. These can all be checkes with an OBDII scanner. Also most scanners will graph the sensers so you can see the eficiency. An article about the P0420 codes and checks to be made is at. 2004 EX Odyssey.Look on the side of the glove box or behind the ash tray for a sticker with a 5 digit code .If its not there then you will need to remove the radio to get the serial number and either call your Honda Dealer for a new number or post it back. If it is a 2002 or... - 1999-2004 Honda Odyssey.While the OBD-II scanner can distinguish between a P0420 code and a P0430, it never hurts to double-check for issues that may cause a problem with the catalytic converter. ... This fix might also work for a P0430 on a Lexus GS300, a P0430 on a Toyota 4Runner, or a Honda Odyssey P0430. ... I just bought a 2005 Honda Pilot with 160,000 miles on it.Jan 16, 2013 · This code points to a failing Catalytic Converter for Bank1. The Oxygen Sensors measure the amount of emissions in the exhaust going into, and then out of the converter. When they see that the converter is not "cleaning" the exhaust enough to meet Honda specs, the Converter is deemed "below threshold" and the P0420 is set.M. msavy11 Discussion starter. 86 posts · Joined 2007. #1 · Jul 10, 2009. 2000 EX 138k. The P0420 code has been on for nearly 1-year. I am about to have a cat installed, but wanted to check the forum first to see if there is anything else I need to address since it's gone ignored for so long.My conclusion is that the code retrieved from the computer is not a true code. p0420 is not always Catalytic Converter but a related issue. It has something to do with emission. Since after market Catlytic converter do not work on this model, CEL will come back on, it is good to spend $12 and try this solution before forking out $1100 to the ...A trip to AutoZone revealed a P0420 code from the OBDII. Specifically it says "catalyst system efficiency below threshold bank 1". ... P0420 refers to bank 1, on a Honda that's the bank closest to the firewall. P0430 refers to bank 2, closest to the radiator. 2010 Pilot EX-L, 2009 VW Jetta, 1969 Dodge Dart Swinger 340. Save Share. Like. I.A trouble code P0420: Catalyst System Efficiency Below Threshold lets you know that the catalytic converter on your 2.2L Honda Accord (Odyssey) has malfunctioned and needs to be replaced.. In this article, I'll explain what causes the catalytic converter to fail and what you should do before replacing it (to avoid a repeat of the problem).P0420 on a honda pilot : r/justrolledintotheshopHonda p0420 sensor code accord catalytic converter 1998 ex connection rear graphe random Random graphe: how i fixed the p0420 code on my 1998 honda accord exEngine honda odyssey 2005 5l converter below rear bank1 twc side compartment p0420 code located closest labeled.2WD. AUTOMATIC. 204,500 MILES. My minivan shakes when on the freeway going over fifty mph. If I take foot off the accelerator the shaking/vibration stops and engine runs smoothly. The car has not had a tune up anytime recent. Regular oil changes done at four to five thousand miles. Check engine light is on with code P0420 - Catalyst system ...How to diagnose code P0420 on a Honda Odyssey. Typically, you'll find out about P0420 because your malfunction indicator lamp or "check engine light" turned on & you or a mechanic diagnosed the problem with an OBD II code scanner like this one from Bluedriver. You may experience a very slight reduction in engine power from reduced exhaust flow ...Cause and Fixes Honda Odyssey Catalytic Converter Emissions Problem.OBDII Codes P1420, P0420, P0430.5. Regular Maintenance: To prevent future occurrences of OBD Code P0420 or other issues, regular maintenance of your Honda Odyssey is crucial. Ensure you get regular emissions tests and smog checks. This not only ensures compliance with regulations but also helps in early detection of potential issues.In this video, you'll learn the causes and solutions of the P0420 code. The causes of the P0420 code are a bad catalytic converter, an ECM update, an exhaust...Fuel Injectors. P0171 indicates that your Honda Odyssey is either getting too much air or not enough fuel. A clogged or damaged fuel injector will cause the air-fuel mixture to lean out in one specific cylinder. You may see a cylinder misfire code or fuel injector-specific code with P0171.If the P0420 code is combined with other codes, try addressing the other codes first There is a Factory Service Bulletin for the following Honda models: 2003-2005 Honda Civic Hybrid ULEV (KA) 2002-2006 Honda Insight With M/T Honda Civic, Insight Factory Service Bulletin OBDII Code P0420When there is a large leak in the Honda Odyssey’s EVAP system, it will throw the P0455 OBDII Code. P0455 indicates a large leak in the evaporative emission control system. (EVAP). There are different leak size codes. For example, P0456 means your Odyssey has a small EVAP leak. While the trouble code may state that there is a …My 2000 Odyssey currently has 130K miles on it. Within the last 4 years, I've had the CEL come on and off year round. ... Honda Odyssey Generation Forums. 1999 - 2004 Odyssey. My take on P0420 issue. 14892 Views 64 Replies 16 Participants Last post by stangsteve, Sep 6, 2011. R. Rnafong Discussion ...P0420 and P0430 codes. ... Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more.2 of 3 code. U0073 MOD $11. Control Module Communication Bus Off. CONFIRMED. 3 of 3 Code. P0420 MOD $11. Catalyst System Efficiency Below Threshold Bank 1. PENDING. From the vehicle maintenance history I came to know that spark plugs were changed on 122k mile.P0420 code honda sensorCode p0420 honda odyssey 2011 honda pilot p0420 code2013 chevy equinox p0420. Sensor location p0420 p0172 code o2 p0430 bank1 ridgeline locations honda sensor2 only 2008 rear mpg preventative maintenance question located . Check Details. Check Details. Have a p0420 on 2002 honda civic ex.Catalyst System Efficiency Below Threshold (Bank 1) is the meaning of the P0420 code. This code indicates that Catalyst System Efficiency (Bank 2) is below the threshold (P0430). The number one cylinder is located on the bank 1 side of the engine. In Bank 2, you will find the opposite side of the engine. P0420 and P0430 both showed up and are ...Honda Odyssey Generation Forums. 1999 - 2004 Odyssey. 2001 ex - p0420. Jump to Latest Follow 10K views 3 ...I bought a code reader to self diagnose later and came back with the P0134 and P2251, which both point to Bank 1, Sensor 1. I replaced the O2 sensor today with a Bosch sensor, but the check engine light stayed on. ... Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more ...Honda Odyssey Generation Forums. 1999 - 2004 Odyssey. P0420 Code - Oxygen Sensor connection. Jump to Latest Follow 41 - 42 of 42 Posts. 1 2 3. K. klosterstock · Registered. Joined Sep 7, 2003 · 59 Posts ...An EVAP fault (especially the 'small leak' one) should not throw a P0420. Make sure the rear vapor tubing is 'tight', if nothing is found, you might have an issue with a vapor valve or control solenoid. You have done everything except for the valve adjustment. It is a 2 - 3 hour DIY the first time.P0420. Jump to Latest Follow ... Oh great, about 2k after the ring job I get this code. I already paid to replace the cat at 80kish (@122k) Would asking Honda to pay for a new cat even worth it? ... Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. Show Less .MIL came on recently. DTC pulled was "P3400". There was a problem with the oil pressure sensor on the rocker arm. Fairly common issue. Before replacing the sensor- CHECK OIL LEVEL... Low oil will throw this code also. More info - Switching It Up! Honda Oil |Pressure Switch Issues - ALLDATA. Part is $20-30.The P0420 code is a common issue many Honda Odyssey owners may encounter. This diagnostic trouble code (DTC) signifies that the vehicle's computer has detected an efficiency problem with the catalytic converter's performance, specifically that the catalyst system's efficiency is below the threshold for the bank 1.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code HONDA P0404 Saving Repai...56 posts · Joined 2018. #4 · Aug 25, 2020. P0420 is telling you that the catalytic converter is not working as efficiently as it should. It uses the output of the upstream and the downstream oxygen sensors to determine the efficiency.2000 Honda Odyssey - 117,800 miles -3.5 VTEC Code is P0420 (insuficient flow (bank 1)). I've replaced the Catalytic converter, EGR valve and pulled the manifold to clean and add tube to EGR port. Port …Overview of how to fix a Honda with a P0420 Code: "Catalyst System Efficiency Below Threshold (Bank 1)."Possible Causes of a Honda P0420 CodeFailed catalytic...Need help troubleshooting 2005 honda odyssey codes p0171/p0174 and p0420. 2007 odyssey code p0741 tc: what can i check, fix, at home? edHow to change a honda odyssey 02 sensor Catalytic pilot p0420P0420 code: catalyst system efficiency below threshold (bank 1).HELP! | Honda Odyssey Forum. 2000 Odyssey P420 code? HELP! 2000 Odyssey 60,000 is getting a P420. 1st the check engine light can on then went of after a week or so. I thought it had to due with the fuel cap. Then after a few days it came back on. Now my wife calls and says it is flashing maint required. She take it to a Midas dealer to have ...Has your check engine light recently turned on? Are you seeing the dreaded error code P0420 on your vehicle’s diagnostic scanner? Don’t panic just yet. Code P0420 is a common issue...Troubleshooting a HONDA P0139 "O2 Sensor Circuit Slow Response (Bank 1, Sensor 2)." code as well as fixes.The DTC that is appearing is a P0420. What is a P0420 DTC? P0420 that indicates a problem with the catalytic converter system in a vehicle. Specifically, the code indicates that the catalytic converter is not functioning properly or efficiently enough to meet the emissions standards set by the vehicle's manufacturer. I have a P0420 Code.Indices Commodities Currencies StocksThe P0420 code is set by the downstream O2 sensor. I had the same code and replaced both O2 sensors. Code came back. ... Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. Show Less . Full Forum Listing.Aug 24, 2020 · 56 posts · Joined 2018. #4 · Aug 25, 2020. P0420 is telling you that the catalytic converter is not working as efficiently as it should. It uses the output of the upstream and the downstream oxygen sensors to determine the efficiency.The codes P0420 and P0430 indicate that the catalytic converters are not performing as efficiently as they should be. This could be caused by various factors, such as excessive oil consumption, misfiring, faulty oxygen sensors, or poor fuel quality. The most common fix for P0420 and P0430 in the Honda Odyssey is to replace the catalytic ...Deactivate Honda VCM in 3.5L V6 SOHC engines. The S-VCM Controller is an automobile grade, high precision tool that can reliably disable VCM 100% of the time, and would safely bypass in case the engine overheats. ... Just food for thought - If your Pilot starts constantly throwing the P0420 code right after you clear the codes, you won't be ...P0420 is a catalytic converter efficiency code. There's a chance that it's a false alarm, so don't rush to have someone look at it. Rarely, it might mean that an oxygen sensor is malfunctioning, but not so bad as to be diagnosed as an oxygen sensor failure. A failing oxygen sensor would affect engine performance; if you start seeing that, a ...Please enter your email address and the security code exactly as shown in the image, then press "Submit" to create an account. ... HONDA: 2011: ODYSSEY: 3.5L V6: Loading. Loading. Loading. Loading.The P0430 code in a Honda Odyssey refers to a potential issue with the vehicle's catalytic converter system. When this code appears, it indicates that there is a malfunction or inefficiency in the catalytic converter in Bank 2 of the engine. This can lead to increased emissions and reduced engine performance.This is an update on my 1999 Odyssey with the PO420 code. I now have 203600 miles on my 1999 EX and have been seeing the PO420 code since 99,500 miles in 2003. At first the code would only be on for 1-2 weeks at a time, then off for several months. By my 2006 inspection, the light was on most of the time, but I was able to pull the fuse to ...How to diagnose code P0420 on a Honda Odyssey. Typically, you'll find out about P0420 because your malfunction indicator lamp or "check engine light" turned on & you or a mechanic diagnosed the problem with an OBD II code scanner like this one from Bluedriver. You may experience a very slight reduction in engine power from reduced exhaust flow ...Code P0365 Hard Fault. Hello Everyone. So this morning I fire up the best vechile I. have ever owned .... my 2004 Honda Odyssey. It struggled a bit and the check engine and TCS came on. Drove to Autozone to have code pulled ..... came back as a P0365. He cleared the code but it immediately came back after a reset and restart.Honda Motorcycle & Scooter India Pvt. Ltd. (HMSI) is the wholly-owned subsidiary of Honda Motor Company, Japan - the World's No.1 two-wheeler company. Commencing its Indian 2Wheeler operations in May 2001, Honda in the last two decades has grown to become India's 2 nd largest two-wheeler company with over 60 million happy customers.Have a Honda odyssey 2000 3.5lt with the error code p4020 catalyst below efficiency on bank 1. I put in a new catalytic - Answered by a verified Auto MechanicSOURCE: 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.For the past 6 months, the CEL intermittent gets on and off, throwing out a P0420 code. Recently, it starts throwing P0430 along with P0420. I am also reading from the freeze frame data for the P0420 code using a low-end OBD2 reader: SHRTFT1: 100.8% (Short term fuel trim bank 1?) ... 2006 Honda Odyssey EX-L, 310K Km 2005 Honda …Code P0420 Honda Catalyst System Efficiency Below Threshold (With Video) AutoCodes - Honda - P0420 Honda. P0420 Honda Code - Catalyst System …Honda Odyssey Generation Forums. 1999 - 2004 Odyssey. 00 Ody LX P0420 CEL code. Jump to Latest Follow 21 - 26 of 26 Posts. 1 2. G. gwmlb · Registered. Joined ...P0420 is real common code in Hondas. To meet emission standards, Honda seems to have set the trip level on P0420 very low and causing the cursed "intermittent failure" situation. The first thing I would do is reset the PCM (clearing the code) and see if it comes back. Then consider new O2 sensors.5. Regular Maintenance: To prevent future occurrences of OBD Code P0420 or other issues, regular maintenance of your Honda Odyssey is crucial. Ensure you get regular emissions tests and smog checks. This not only ensures compliance with regulations but also helps in early detection of potential issues.HELP! | Honda Odyssey Forum. 2000 Odyssey P420 code? HELP! 2000 Odyssey 60,000 is getting a P420. 1st the check engine light can on then went of after a week or so. I thought it had to due with the fuel cap. Then after a few days it came back on. Now my wife calls and says it is flashing maint required. She take it to a Midas dealer to have ...After all this, I still had the P0420 code. I'm pretty confident the clogged EGR had damaged my cat with too high EGT, to the point the P0420 code was being triggered, but not enough to really affect the quality of the van's emissions. ... 2010 Honda Odyssey EX-L w/RES: 112K Miles. TruCool LPD4544 Cooler, Weathertech's, OEM Fog's, VCMuzzler II ...P0420 or P0430, and any combination of P0300 through P0306, P219A, ... LAUNCH code reader effortlessly recognizes vehicle information( (vehicle make, model, and year info) through one-tap automatic VIN scanning, with no manual input, just swift and precise data at your fingertips. ... Safety Recall: 2023-2024 Honda Odyssey EPS Gearbox Assembly ...P0420 diagnosing How to fix honda engine error code p3400 - backyardmechanic 2008-2017 honda odyssey front vcm/oil switch replacement diy (p3400 Odyssey hondaThe Ody has an A/F ratio sensor rather than an O2 sensor for the upstream sensors which makes it a bit harder to confirm by watching O2 sensor data on a live data scan tool. The P0420 and P0430 codes are set when the downstream O2 sensor code is following the upstream sensor, meaning the cat isn't doing anything.Some common engine light codes in Honda Odysseys include P0300 (random/multiple cylinder misfire detected), P0420 (catalyst system efficiency below threshold), and P1456 (evaporative emission control system leak detected). Understanding these codes and their possible causes will aid in troubleshooting and finding the …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.redmondjp. 538 posts · Joined 2008. #5 · May 1, 2013. It's sensors (plural) in this case - the secondary ones: Bank 1 Sensor 2, and Bank 2 Sensor 2. RIP: 2001 Odyssey EX 235K miles, 77K miles on the 1st transmission, 30K on the 2nd, 128K on the third (engine still ran great), Dextron III ATF with Lubegard Friction Modifier (black bottle ...1999 Honda Odyseesy code P0420. Discussion in 'Odyssey' started by Optimus Prime, Oct 6, 2010. Optimus Prime Guest. My 1999 Honday Odyssey keep getting the P0420 engine warning light code despite the fact I changed both of the O2 sensors and the entire catalytic converter. I called Honda and they say really the last step is to re-flash theI just bought a used 2006 Honda Odyssey and about a week ago the "MALFUNCTIONINDICATORLAMP" light came on. I went to AutoZone and got the codes. ... P0420 ENG: Catalyst System Efficiency Below Threshold Bank 1 CURRENT ... It's possible that it may resolve the P0420/P0430 codes, at least for a while. If they return then you'll need to replace ...When the P0133 code is set, it means that the O2 sensor isn't altering the voltage output as it should when the air-fuel ratio changes. For that reason, it's categorized as having a slower response than normal. This code indicates trouble with oxygen sensor #1 on bank #1, which is on the same side of the engine as cylinder #1.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code HONDA P0430 Saving Repai...Honda Odyssey Generation Forums. 1999 - 2004 Odyssey. P0420 Code - Oxygen Sensor connection. Jump to Latest Follow 41 - 42 of 42 Posts. 1 2 3. K. klosterstock · Registered. Joined Sep 7, 2003 · 59 Posts ...If you’re a car owner, there’s a good chance that at some point you’ve encountered the dreaded check engine light. Code P0420 is a generic diagnostic trouble code that indicates an...Honda Odyssey P0137: O2 Sensor Low Voltage (Bank 1 -Sensor 2) P0137 is a fairly common OBDII code that occurs in the Honda Odyssey, it's a general code. This means that it has the same meaning for any vehicle. This code is supposed to let you know that there is an issue with the wiring or harness going to the sensor, or the sensor itself is bad.I have a 2013 Honda Odyssey with 127K miles that recently got a check emission light that came on. I checked the code and only got a P0420... and no other co...2010 Honda Odyssey EX-L; 160,000 miles; VCM is Muzzled (original VCMuzzler) Cleveland, Ohio USA. ... I tried to delete the code, but it appeared again in 5-10 minutes in the driving mode. So it appears that in the driving mode during movement, HO2S Bank Sensor 2 value stays zero, but in the parking mode at 1500 PRM the value of the …Cause and Fixes Honda Odyssey Catalytic Converter Emissions Problem.OBDII Codes P1420, P0420, P0430.P0420 Code. Jump to Latest Follow ... Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. Show Less . Full Forum Listing. Explore Our Forums. 2005 - 2010 Odyssey 2011 - 2017 Odyssey 1999 - 2004 Odyssey 2018+ Odyssey Problems and Concerns.72triple said: Bank 1 Cat is located on the fire wall side of the engine. Generally Bank 1 and Bank 2 have naming nomenclature as Cylinder 1 = Bank 1, Cylinder 2 = Bank 2. The number 1 cylinder on these lumps is fire wall side, passenger end. Upstream = pre cat, Downstream = post cat. This is all true except the part in bold above.Cost Considerations for P0420 Code Repairs. The cost of repairing a P0420 code in a Honda Pilot can vary depending on several factors, including the extent of the damage and the chosen repair option. Generally, expect to pay anywhere from $200 to $1500 for repairs, with catalytic converter replacement being the most expensive option.Apr 6, 2015 · Do you have a 2005-2008 Honda Pilot, Ridgeline, Odyssey and Acura MDX V6 and are experiencing a code P0420? Watch this video for helpful information.If you are a car owner, it is likely that you have encountered the dreaded check engine light at some point. One of the most common trouble codes that many drivers come across is c...2010 Honda Odyssey EX-L; 160,000 miles; VCM is Muzzled (original VCMuzzler) Cleveland, Ohio USA. ... I tried to delete the code, but it appeared again in 5-10 minutes in the driving mode. So it appears that in the driving mode during movement, HO2S Bank Sensor 2 value stays zero, but in the parking mode at 1500 PRM the value of the same sensor ...redmondjp. welcome! Do some searches on here for that P0420 code and star, How to fix obd code p0430 on a honda odysseyP0420 ford f150 bank 1 , Feb 24, 2021 · Getting a p0420/0430 catalyst code. Was reset but comes back on. ... Odyclub community is the #1 for, p0400 and p0420 together on a Honda odyssey, not the cat . My parents have 2008 Hond, Mar 20, 2020 · You are close in your understanding of what the P0430 code means. In reali, P0420 honda codeHow to fix obd code p0420 on a honda odyssey 2016-2018 honda warranty ext, Honda odyssey 439b 9c19 a26c P0420 diagnosing (honda odyssey) diagnosing a p0420 by using 3 , The EVAP canister ven shut valve is open (open to atmosphere) when th, =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈===, Overview of how to fix a Honda with a P0420 Code: "Catalyst Sy, If you are a car owner, it is likely that you have enc, Feb 28, 2008 · TSB for P0420 -- catalytic converter, Great Video By My Daughter On The Process Of Changing Out Catalytic, Mar 20, 2020 · You are close in your understanding of w, Honda Odyssey Generation Forums. 2005 - 2010 Odyssey 2005 o, P0420 Code. Jump to Latest Follow ... Odyclub comm, Honda Odyssey Generation Forums. 1999 - 2004 Odyssey. P0420 Code , If the P0420 code is combined with other codes, try ad.