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P0420 and P0430 issue. I have a 2011 Odyssey Touring Elite, recently bought from Virginia and now registered in NY. It has 105k miles on it. As I drove it along VA-PA-NY after picking up the vehicle, I noticed check-engine light turn on (it was 50 miles post-refueling on the way and after at least 300 miles total driving).P0420 Blues. About 500miles ago, the maintenance light flashed when starting the car, then last night at exactly 112,500mi the CEL came on with a P0420 code according to Auto Zone. Just started stumbling on start-up too (maybe 1/2dozen times in a row). Fuel consumption (16city/19.5hwy) and ride are unchanged.Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 110k miles - Bought brand new in August 2006, never any major repairs, possibly the most reliable Odyssey on the road ... Of course p0430/p0420 could be caused by other reasons, mainly leaks in the intake and exhaust, oil burning and smearing the sensor and a degrading but not totally ...And when p0420 shows, it most likely is a worn CAT, but in pratice most place try to get you replace the sensor first. And in most cases, it just drain your wallet and drive people nuts. it might disappear for months, but eventually the code p0420 will come back if you don't replace the CAT. K. kgardonia. 240 posts · Joined 2010. #4 · Nov 2 ...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.Customer brought me this 2001 Honda Odyssey to confirm if the Catalytic Converter was indeed bad, per Muffler Shop. In this Diagnosis I used three methods: S...Oct 1, 2019 · 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 ...2016 Ody with P0420 and P0301 codes. Hi I am a noob here and hope I am posting in the right place. FYI, I have some car knowledge (do my oil changes, brakes and followed youtube videos to swap the sliding door mechanisms in our old Sienna) but I haven't touched the engine much. I am besides myself with our 2016 Ody.Pueden haber diversas causas por las cuales se registra un código DTC P0420 Honda en un auto. Algunas causas pueden incluir: Convertidor catalítico de tres vías defectuoso (TWC) El sensor de oxígeno calentado secundario defectuoso (Sensor HO2S secundario (Sensor 2)) El arnés del Sensor de oxígeno calentado secundario 2 está abierto o en ...With a new Honda Odyssey oxygen sensor from AutoZone in your minivan, you'll also enjoy better performance and fuel economy. Based on the information your minivan's oxygen sensor produces, your engine's computer reviews the data and adjusts how much fuel it needs to run. If your Odyssey starts to use more fuel than it actually needs and you ...P0420 - Honda Accord The check engine line (CEL) came on and we took it to Autozone to get a free code reading. It was P0420, which turned out to be a very popular code for all Honda Accords. We have a 1999 Honda Accord LX with 140K miles. We called several local Honda dealership and received an estimate of $1K to replace the catalytic ...Codes P0172 and P0420. Just came on, pulled up to Checker and P0172 is Bank 1 is too rich, while P0420 is Cat System Below Threashold - Bank 1. The guy said that I need to replace the Catalystic Converter and that will fix the problem. I did a search here and haven't found anybody with the same two codes.The Fleet: Victus - 2012 Honda Accord - EX-L V6 - Crystal Black Pearl - 37k miles - Bought used in July 2022 with 23k miles Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 110k miles - Bought brand new in August 2006, never any major repairs, possibly the most reliable Odyssey on the roadHonda Odyssey Generation Forums. 1999 - 2004 Odyssey. P0420/P1491 2000 Odyssey 150k miles. Jump to Latest Follow 7K views 1 ...this video will show you how to diagnose P3400 and P3497 on your Honda Odyssey.4/2/18: OBD2 - confirmed: P0420 - Catalyst System Efficiency Below Threshold Bank 1 & P2096 - Post Catalyst Fuel Trim System Too Lean Bank 1. OBD2 - pending: P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) & P2097 - Post Catalyst Fuel Trim System Too Rich Bank 1. OBD2 - …Mar 21, 2024 · 3. Subaru & Honda. If you find a P0420 code in your Subaru or Honda, it’s most likely the catalytic converter to blame. It can also be caused by an exhaust leak or a bad oxygen sensor. Check for vacuum leaks or other fuel mixture-related engine codes. Check for any exhaust leaks before the catalytic converter.27 posts · Joined 2017. #1 · Nov 4, 2023 (Edited) For a couple of years I struggled with the P0420 code, which would come and go. I replaced the sensor, no joy. My BlueDriver OBD2 scanner showed 0V dropouts, and I knew the wiring had been repaired during the tenure of the previous owner, so I finally got around to exploring the wiring …redmondjp. welcome! Do some searches on here for that P0420 code and start reading! I would suggest the spark plug non-fouler modification for the secondary O2 sensor which is the one behind the catalytic converter. It has turned off that code for my car for almost three months now (search for "non-fouler").Jul 30, 2017 · answered Jul 30, 2017 by anonymous. P0420 is for the catalytic converter not cleaning the burnt fuel effectively, most likely the catalytic converter you will have to reset the code drive it and see if the monitors complete. Reset ECM to erase Code P0420, engine light came back on after driving 75 miles and stayed on. What may be causing this?John Clark. This is just not true. The P0420 code is the one code that almost always means exactly what it says. Yes, one should check the functionality of the A/F sensors and the rear O2 sensor but just due to what the computer needs to see in order to set a P0420 or P0430 code it usually is NOT the sensors.Honda odyssey 439b 9c19 a26c P0420 diagnosing (honda odyssey) diagnosing a p0420 by using 3 methodsP0171 p0174 sensor lean bank system too oxygen fuel ecu Honda p0420 odyssey 2005 45e8Need help troubleshooting 2005 honda odyssey codes p0171/p0174 and p0420.. P0171 trouble code (1995-1997 2.2l honda accord and odyssey)Need help troubleshooting ...To diagnose the P0420 Honda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.I'm getting P0420/430 codes and want to start small before having to replace the catalytic converter. I started with some some cat cleaner from O'Reillys, and now looking into what O2 sensors i should replace. ... Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 110k miles - Bought brand new in August 2006, never any major repairs ...

The 2023 Honda Pilot SUV and Odyssey minivan have three rows and share an engine, but the Odyssey is more spacious, particularly in cargo room and third-row legroom. While AWD models allow the Pilot to tow more, the Odyssey gets slightly better fuel economy. Both earn top IIHS safety scores. David Goldberg.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.P0138 is a common OBDII code that occurs in many vehicles, including the Honda Odyssey. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0138.This would have the same effect (extra-rich exhaust), but wouldn't continuously expose any one cylinder to unburnt fuel for an extended period of time. But if you know that your converter is toast (meaning persistent P0420 code properly diagnosed) anyways, you're not going to hurt it any more by doing this. RIP: 2001 Odyssey EX 235K miles, 77K ...

If you’re an avid DIYer and a car enthusiast, you may have come across the dreaded “Code P0420” at some point. This diagnostic trouble code is related to your vehicle’s catalytic c...And when p0420 shows, it most likely is a worn CAT, but in pratice most place try to get you replace the sensor first. And in most cases, it just drain your wallet and drive people nuts. it might disappear for months, but eventually the code p0420 will come back if you don't replace the CAT. K. kgardonia. 240 posts · Joined 2010. #4 · Nov 2 ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. P0420 code is a common issue in Honda Odyssey vehicles . Possible cause: P0420 is specific to the bank 1 or rear bank Cat. Not an uncommon issue fo.