The P0420 code in a Honda Civic indicates an issue with the catalytic converter system. It signifies that the catalytic converter is not functioning properly and may be unable to effectively reduce harmful emissions. This can lead to reduced fuel efficiency and potentially affect the vehicle’s performance.Put a fouler on the downstream sensor, you most likely won't see the P0420 again, especially if it only occasionally pops up: All they found was the P0420! 2007 Pilot EX-L 4wd - Nimbus Gray - 285k. 2007 Accord EX-L Sedan I4 5AT - Blue - 255k (totalled 12/23) replaced with 2006 CRV SE 160k.Aug 28, 2020 · In today's video Mike and Drew review the ramifications of not dealing with a P0 420 trouble code on a 3.5 L Honda engine.Leaving it too long will cause cata...Inspect the catalytic converter: Look for any physical damage or clogging in the catalytic converter. A failing converter can trigger the P0420 code. 4. Check for engine misfires: Misfires can cause unburnt fuel to enter the exhaust system, which can damage the catalytic converter.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Honda Civic P0420 Code Symptoms. The P0420 code in a Honda Civic will often be thrown if one of your car’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.Honda’s new goal is to achieve 100% EV sales in North America by 2040 as part of its broader target of being carbon neutral by 2050. CEO Toshihiro Mibe announced the planned shift ...Honda pilot p0420 codeHonda pilot p0420 bank 1 Pilot honda 2006 2007 dashboard momentcar2006 honda pilot 2007 suv ratings unlock vehicle change. Sensor location p0420 p0172 code o2 p0430 bank1 ridgeline locations honda sensor2 only 2008 rear mpg preventative maintenance located questionHow to fix honda p0420 engine …Dec 27, 2022 · P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Diagnosis: The most common cause of P0420 is a ...If you’re in the market for a reliable and spacious SUV, a used Honda Pilot can be an excellent choice. And if you prefer to buy directly from the owner, there are several advantag...P0420 is for the rear bank cat (closest to firewall) and P0430 is for the front one (closest to radiator). ... modification DIY’s and discussion for the Honda Pilot SUV. Show Less . Full Forum Listing. Explore Our Forums. 2016-2022 Pilot General Discussions 2003-2008 Pilot 2012-2015 Pilot 2009-2011 Pilot. Top Contributors this MonthEven slight variations in the air/fuel mixture will cause the converter temperature to rise significantly. The “Catalytic Converter Efficiency” Diagnostic Trouble Codes (DTCs) P0420 and P0430, are among the top 10 DTCs technicians face. And while the description might imply a failed converter, odds are the ultimate fault lies somewhere else.04 honda pilot p0740 Honda p0420 2007 honda pilot. Honda Pilot Check Engine Light: Q&A on P2138 Code & APP Sensor. Honda accord p0741 transmission pilot code p0730 tl pressure control automatic solenoid shift 2004 problems check clutch failure transmissions mileage Pilot code honda 2010 2006 intermittent Well, i have a honda …Most likely what you will see is the P0420 will return, which proves that the sensors are good, and the bank 1 cat is indeed bad. 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.This trouble code references a number that is given to you when you plug your Pilot into an OBDII scanner. P0456 Indicates that there is a small leak in the evaporative emission control system. It often appears with or is related to other codes, such as P0420, P0441, and very often P0440. P0456 is normally not an immediate threat to the ...Code Tech Notes. As the code description implies, the P0420 code means that the vehicle's Powertrain Control Module (PCM) has detected that the Three-way Catalyst Converter is not working properly (it is not as efficient as the factory expects). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the Three-way ...Sep 20, 2018 · The most common fix for P0420 in the Honda Pilot is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Pilot into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need.07 honda pilot p0420 p0430 fix. Honda pilot p0430 p0420 fixHonda pilot p0171 / p0174 fast fix and diag tips 3.5l 2009 Used 2006 honda pilot 2wd ex-l at with res for sale in chandler az04 honda pilot p0740. Well, i have a honda pilot 2004. keep getting p0401 code, insufficientP0300 p0305 codes Pilot honda p0740P0730 honda pilot. Check DetailsThis page is meant to help you troubleshoot the Honda Accord P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. TableDec 6, 2020 · My P0420 code would only show up in the cooler months of the year then go away entirely during the warmer months of the year. Engines protected with FilterMag, S-VCM, Top-Tier Fuel, Mobil1, Liqui Moly, Fram Ultra. 2013 Pilot EX-L@ 185k / 2007 Pilot EX-L@ 202k / 2012 Civic LX@ 173k / 2007 VTX 1300C@ 18k. Nail Grease.2006 pilot ex with p0300-p0306 code. 2006 honda pilot codes p0154 & p2247How can i troubleshoot at p0420 code with a obd scanner that has live Well, i have a honda pilot 2004. keep getting p0401 code, insufficientTorque manifold ridgeline. Honda pilot code p0401- egr insufficient flow problem fix (part1Honda p0401 .P0420 Diagnosis: Honda Civic. The most common fix for P0420 in the Honda Civic is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Civic into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. Here’s a good P0420 diagnostic order for the Honda Civic: 1.What Does Code P0420 Mean? OBD II fault code P420 is a generic code that is defined as “Catalyst System Efficiency below Threshold Bank 1”, and is set when the PCM (Powertrain Control Module) detects that the catalytic converter on bank 1 is operating below a minimum allowable efficiency threshold. Note that while “Bank 1” refers to the ...The 1975 Honda CB400 motorcycle was affordable, technically advanced, and deceptively quick. Learn more and see pictures of the lean 1975 Honda CB400. Advertisement The 1975 Honda ...Honda Pilot 2009 with 217xxx miles on it. Both P0420 and P0430 codes got shown yesterday. Researched a lot and figured I should buy OBD2 scanner with live data to see the output of downstream O2 sensors. Bank 1 sensor had a perfect flat line around 700-ish mV (don't know why P0420 showed up). Bank 2 sensor fluctuated a bit (200 to 800 …Installing removal of catalytic converter is bank 1 n 2 valve adjustment and passenger side CV axle removal.Honda Marine provides information about the year an outboard motor was built through the serial numbers of motors manufactured between 1997 and 2006. Look around the side of the ou...Honda Ridgeline Truck Utility with Crossover DriveAbility & Versatility 2000 ACURA 3.2TL Navi NighthawkBlack Ebony FTM1/ FRED. Save Share. ... I have a similar issue with my 2006 Pilot and an erratic P0420 code that I haven't resolved yet. 2008 Ridgeline RTS Billet Silver Metallic in High Point, NC.2006 Honda pilot EX AWD Approx. 114k miles Short version: About a month ago, replaced all 6 spark plugs and the #2 coil pack after the plug failed and melted the coil pack. After about 100 miles of total driving since …Get specific insights about 'p0430 Honda Accord' and 'p0430 Honda Pilot'. Learn how to decode 'Honda code p0430' and ensure your vehicle's optimal performance. Skip to main content; Skip to primary sidebar; Skip to ... there are other codes paired with P0420 that should not be overlooked. A misfire diagnosis is required for codes ...Cars that have timing chains instead of timing belts include the 2006 to 2016 Honda Civic, 2003 to 2016 Honda CR-V and Accord 2.4 and 2003 to 2011 Honda Element. Timing chains and ...The ‘Check Engine’ light is activated when the powertrain control module (PCM) detects inconsistencies in the emission levels. If the post-converter oxygen levels are unusually high, it suggests the catalytic converter isn’t functioning correctly, triggering the P0420 code and lighting up the ‘Check Engine’ indicator. 3.honda pilot battery replacement 2006 2007 2008 0:00 remove cable from battery hold-down bracket0:21 remove battery hold-down bracket1:19 disconnect negative ...Aug 28, 2020 · In today's video Mike and Drew review the ramifications of not dealing with a P0 420 trouble code on a 3.5 L Honda engine.Leaving it too long will cause cata...Jan 14, 2024 · Inspect the catalytic converter: Look for any physical damage or clogging in the catalytic converter. A failing converter can trigger the P0420 code. 4. Check for engine misfires: Misfires can cause unburnt fuel to enter the exhaust system, which can damage the catalytic converter.Here’s my story: We have a 2007 Honda Pilot with a 3.5L V6 engine. About 2 months ago, it started running rough and threw the random misfire code (P0300) and misfire codes for cylinders 2 and 5. I replaced the spark plugs, PCV valve, and air filter first. Also tried some Meyer’s Mystery Oil in the gas tank.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Used 2006 Honda Pilot pricing starts at $4,543 for the Pilot LX Sport Utility 4D, which had a starting MSRP of $28,745 when new. The range-topping 2006 Pilot EX-L Sport Utility 4D starts at $5,736 ...How to clean or replace a PCV valve in a 2006 Honda Pilot.SKIP INTRO: 0:150:27 Location of PCV Valve0:51 Removing the PCV1:03 Cleaning the PCV1:41 Reinsertin...07 honda pilot p0420 p0430 fix. Honda pilot p0430 p0420 fixHonda pilot p0171 / p0174 fast fix and diag tips 3.5l 2009 Used 2006 honda pilot 2wd ex-l at with res for sale in chandler az04 honda pilot p0740. Well, i have a honda pilot 2004. keep getting p0401 code, insufficientP0300 p0305 codes Pilot honda p0740P0730 honda pilot. Check DetailsO. Origover220k Discussion starter. 12 posts · Joined 2019. #1 · Jan 4, 2020. So with 250,000 miles I got the infamous P0420 code. I figured for 100 I’ll throw in another converter on it and then I ordered a sensor to go in the converter. My light still came on. Frustrated I researched and didn’t realize there was an upstream sensor.2006 Honda Pilot 3.5 - P0420 Question/Cat Bank. My brother has a 2006 Honda Pilot 3.4 AWD with a 220,000 miles. He recently got a check engine light on 2 days ago and I checked it. It's the dreaded P0420 ( the catalyst system efficiency of your car is below threshold (Bank 1). The vehicle has 3 catalytic converters.04 honda pilot p0740 Honda p0420 2007 honda pilot. Honda Pilot Check Engine Light: Q&A on P2138 Code & APP Sensor. Honda accord p0741 transmission pilot code p0730 tl pressure control automatic solenoid shift 2004 problems check clutch failure transmissions mileage Pilot code honda 2010 2006 intermittent Well, i have a honda …Apr 22, 2023 · In this video, I discuss sequencing the removal of your catalytic converter at the front of the 3.5 L Honda V6. While I do this on a 2011 Honda pilot it is a...Aug 3, 2017 · First thing to do is remove the EGR and use throttle body cleaner to clean EGR and ports. It's possible that something is affecting its range of movement. Then put it back on and drive it and see if the P0404 continues. If it continues, then the next step would be a wiring check.Well this past weekend the check engine light came on. We got up that morning before sunrise (temperatures were around 20f) to head out and snap sunrise shots at a local spot. '07 Pilot AWD with ~170k miles. I let the car idle quite a while before we set out to warm up. We sat with the car idling quite a while during our shoot.2006 pilot ex with p0300-p0306 code. 2006 honda pilot codes p0154 & p2247How can i troubleshoot at p0420 code with a obd scanner that has live Well, i have a honda pilot 2004. keep getting p0401 code, insufficientTorque manifold ridgeline. Honda pilot code p0401- egr insufficient flow problem fix (part1Honda p0401 .Here we have a 2006 Honda Pilot with a code P0138 o2 sensor stuck high. The shop already replaced the sensor twice and suspects a wiring issue, sometimes you...May 18, 2021 · Honda Pilot 2009 with 217xxx miles on it. Both P0420 and P0430 codes got shown yesterday. Researched a lot and figured I should buy OBD2 scanner with live data to see the output of downstream O2 sensors. Bank 1 sensor had a perfect flat line around 700-ish mV (don't know why P0420 showed up). Bank 2 sensor fluctuated a bit (200 to 800 mV), not ...2005 Honda Pilot EX 3.5L. Problem: MIL Lamp on (P0420) Diagnosing: The technician tried to consult the dealership which advised the replacement of all 3 catalytic converters, but then decide to follow the advice found in Aldata. FIX: Bank 1 CAT replacement fixed the issue, other cats weren’t replaced. 101 solutions that fixed the p0420I've had P0420 on occasion with 2005 Pilot with about 95k. Buddy also with 05 and about 120k had on occasion. Both stopped with use of non ... troubleshooting, modification DIY’s and discussion for the Honda Pilot SUV. Show Less . Full Forum Listing. Explore Our Forums. 2016-2022 Pilot General Discussions 2003-2008 Pilot 2012-2015 ...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...The P0420 code in a Honda Element will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. There are rarely drivability issues …Conclusion. The P0420 code is a generic diagnostic trouble code that indicates a problem with the catalytic converter's efficiency in the exhaust system. It can be caused by various issues, ranging from faulty oxygen sensors to engine misfires or fuel system issues. Suppose you suspect your Honda car has this code.1,365 Posts. #23 · Dec 7, 2020. I have the same vehicle, 2007 Pilot 4WD EXL model with NO VCM. My P0420 code would only show up in the cooler months of the year then go away entirely during the warmer months of the year. Engines protected with FilterMag, S-VCM, Top-Tier Fuel, Mobil1, Liqui Moly, Fram Ultra. 2013 Pilot EX-L@ 185k / 2007 Pilot ...The code P0420 stands for Catalyst System Efficiency Below Threshold. This means that the oxygen sensors in your exhaust system have detected that the catalytic converter is not working as efficiently as …This page is meant to help you troubleshoot the Honda Pilot P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of Contents10 posts · Joined 2021. #3 · Oct 2, 2021. Hey there, had a similar thing come up with my ‘08 this past week. I pulled the codes and showed the P0420 (Failed Converter code) & a P0139 (Bank 1 sensor 2 which is front bank after converter O2 sensor code) in tandem. After speaking with an ex Honda tech he stated to start by replacing the O2 sensor.2016 honda pilot code p219b Honda p0401 c068 af67 4b71 P0420 code: what sensor do i have to replace with p0420 code my. 04 honda pilot p0740 - YouTube. P0430 code on 2010 honda pilot Persistant codes p0420 and p0430 2006 pilot ex with p0300-p0306 code. P0430 o2. Well, i have a honda pilot 2004. keep getting p0401 code, insufficientHonda …Changing out a catalytic converter on a 2008 Honda Pilot. Hope this will help others out the work and being aware of what is going on. Take screenshot of the...07 honda pilot p0420 p0430 fix.2004 honda pilot p0304 misfire cylinder 4 diagnosis and repair 2009 pilot 106k, cel p0171 & p0174Pilot honda 2007 2006 specs slide safety. P0420 pilotLocation pilot o2 pathfinder justanswer p0420 Well, i have a honda pilot 2004. keep getting p0401 code, insufficientPilot honda p0740.piloteers.org is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Content on piloteers.org is generated by its users. piloteers.org is not in any way affiliated with Honda Motor Company VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada07 honda pilot p0420 p0430 fix. Honda pilot p0430 p0420 fixHonda pilot p0171 / p0174 fast fix and diag tips 3.5l 2009 Used 2006 honda pilot 2wd ex-l at with res for sale in chandler az04 honda pilot p0740. Well, i have a honda pilot 2004. keep getting p0401 code, insufficientP0300 p0305 codes Pilot honda p0740P0730 honda pilot. Check DetailsAug 28, 2023 · Sadly, the P0420 came back on within 50 miles of clearing the code on first trip with highway speeds for more than 5 minutes. ... Honda Pilot 2006 LX 4WD J35A9 ...Sep 30, 2022 · Overview of how to fix a Honda with a P0420 Code: "Catalyst System Efficiency Below Threshold (Bank 1)." Possible Causes of a Honda P0420 Code Failed catalytic converter Faulty oxygen...I've had P0420 on occasion with 2005 Pilot with about 95k. Buddy also with 05 and about 120k had on occasion. Both stopped with use of non ... troubleshooting, modification DIY’s and discussion for the Honda Pilot SUV. Show Less . Full Forum Listing. Explore Our Forums. 2016-2022 Pilot General Discussions 2003-2008 Pilot 2012-2015 ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix HONDA P0420 ====Engine Code HONDA P0420 Saving Re...Installing removal of catalytic converter is bank 1 n 2 valve adjustment and passenger side CV axle removal.Feb 10, 2019 · P0430 is for the the front bank (2) by the radiator. P0420 is the back (bank 1). I only worked on the front as P0430 was on most of the time, and P0420 was on and off. I am going to go have the car inspected now that the codes are gone. Then I am going to remove the 02 sensor extender and see if the light remains out.Jan 14, 2024 · Inspect the catalytic converter: Look for any physical damage or clogging in the catalytic converter. A failing converter can trigger the P0420 code. 4. Check for engine misfires: Misfires can cause unburnt fuel to enter the exhaust system, which can damage the catalytic converter.2006 Honda Pilot Code P0420. 2004 honda pilot mil check engine code p0740 solution Honda pilot code p0401- egr insufficient flow problem fix (part1 Pilot honda p0740. 2016 Honda Pilot Code P219b - 08/2021. Honda sensor pilot o2 2005 code p0420 replacement Well, i have a honda pilot 2004. keep getting p0401 code, insufficient P0420 code …2006 honda pilot code p0420. Check engine light code p0420 honda odysseyHonda pilot p0420 code P0420 honda codeP0420 code still even after replacing cat, exhaust gasket& 02sensors. 08 accord v62005 honda pilot catalytic converter bank 1 replacement – latest cars Catalytic replacement accord mechanic2007 honda pilot o2 …The catalytic converter is part of the exhaust system in Honda Pilot and its main purpose is to convert exhaust gases like carbon monoxide and hydrocarbons that are harmful to health and the environment ... If you see any fault code from P0420 to P0424 or from P0430 to P0434 in the OBD2 scanner, it indicates a problem with the ...2006 Honda Pilot EX-L P0420 Code Jump to Latest Follow 4K views 1 reply 2 participants last post by 97trophy Nov 6, 20162006 Honda Pilot 3.5 - P0420 Question/Cat Bank. My brother has a 2006 Honda Pilot 3.4 AWD with a 220,000 miles. He recently got a check engine light on 2 days ago and I checked it. It's the dreaded P0420 ( the catalyst system efficiency of your car is below threshold (Bank 1). The vehicle has 3 catalytic converters.I believe I have finally resolved this. I ended up replacing most of the part in the EVAP system - not impressed with my trouble shooting skills, but believe finally resolved. Started at 198,000 miles with the codes P0497 and P145C - vehicle was new to me so had limited history. Replaced gas cap - codes still present.This page is meant to help you troubleshoot the Honda Accord P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. TableThe 1969 Honda Dream 305 motorcycle combined power with convenience. Read about this important Honda and see pictures of a real dream machine. Advertisement The 1969 Honda Dream 30...2006 pilot ex with p0300-p0306 code. 2006 honda pilot codes p0154 & p2247How can i troubleshoot at p0420 code with a obd scanner that has live Well, i have a honda pilot 2004. keep getting p0401 code, insufficientTorque manifold ridgeline. Honda pilot code p0401- egr insufficient flow problem fix (part1Honda p0401 .07 honda pilot p0420 p0430 fix. Honda pilot p0430 p0420 fixHonda pilot p0171 / p0174 fast fix and diag tips 3.5l 2009 Used 2006 honda pilot 2wd ex-l at with res for sale in chandler az04 honda pilot p0740. Well, i have a honda pilot 2004. keep getting p0401 code, insufficientP0300 p0305 codes Pilot honda p0740P0730 honda pilot. Check DetailsHere are the most common causes of P0420 in the Honda Pilot: Likely Causes. Bad catalytic converter; Bad O2 sensor; Other Causes. Exhaust leak; O2 sensor wiring; PCM issue; Overheating converter (usually caused by a misfiring engine, there should be codes) Burning oil (overheats converter, usually no … See moreDo 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.The spark plug, air filter, etc are new. Probably unrelated to fuel level because P0420 is bank 1 cat converter not functioning properly. At 180K, they're at the end of their lives. You're probably running a bit leaner air/fuel ratio on the highway, a little richer during around town driving. Cats are expensive.1. Check for any exhaust leaks: Inspect the entire exhaust system for leaks or damage that could cause the catalytic converter to malfunction. 2. Clean or replace the oxygen sensors: Faulty oxygen sensors can trigger the P0430 code. Clean the sensors first, and if that doesn’t solve the issue, consider replacing them. 3.Good morning, Quartz readers! Good morning, Quartz readers! France celebrates Bastille Day. This year’s military parade, which marks the 100th anniversary of America’s entry into W...The 1969 Honda Dream 305 motorcycle combined power with convenience. Read about this important Honda and see pictures of a real dream machine. Advertisement The 1969 Honda Dream 30...Apr 11, 2022 · Just wanted to update the thread. Prior to bringing in my 2012 EX-L with 200k in for the brakes, ATX and Diff Fluid changes and to trouble shoot recurring P0497 and P145C codes (See above thread for what has been done), I decided to make sure the gas cap was tight. It seemed to be but I turned it a couple "clicks".2006 pilot ex with p0300-p0306 code. 2006 honda pilot codes p0154 & p2247How can i troubleshoot at p0420 code with a obd scanner that has live Well, i have a honda pilot 2004. keep getting p0401 code, insufficientTorque manifold ridgeline. Honda pilot code p0401- egr insufficient flow problem fix (part1Honda p0401 .Installing removal of catalytic converter is bank 1 n 2 valve adjustment and passenger side CV axle removal.During the first two weeks Honda's new HR-V was on the market, an impressive 6,381 of the tiny crossover SUV were sold. That's triple the rate of any other model in its category d...There are many things that can cause the P0430 trouble code in your Pilot. Here are the most common ones. Oxygen Sensor – The P0430 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar readings. When the oxygen sensor is bad, it can cause a false reading and trigger the code.Dec 23, 2018 · The most common fix for P0420 in the Honda Element is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Element into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. Here’s a good P0420 diagnostic order for the Honda Element: 1. Check for Other Codes.honda pilot battery replacement 2006 2007 2008 0:00 remove cable from battery hold-down bracket0:21 remove battery hold-down bracket1:19 disconnect negative .... Honda pilot p0420 codeHonda pilot p0420 banHonda’s new goal is to achieve 100% EV sales in North America by 2 zroger73. Unless you put contaminated fuel in the vehicle, it is somewhat unlikely you have two defective catalytic converters or more than one defective sensor simultaneously. These two codes could also be a symptom of a different problem. If you feel like gambling, you can start throwing parts at it. Installing removal of catalytic converter is bank The P0420 code indicates that the Engine Control Module (ECM) has identified a decline in the efficiency of the catalytic converter on Bank 1. This could be attributed to a malfunctioning catalyst or potentially be a false alarm triggered by a defective O2 sensor. The engine control module (ECM) uses two O2 sensors, one in front, and one behind ...208 posts · Joined 2012. #1 · Feb 24, 2015. Got these two codes driving home from work today. P0141 is downstream oxygen sensor heater circuit malfunction. P0420 is catalyst system efficiency below threshold. A few questions. Intermittent P0420 & P0430 codes - 2013 Pilot EX-L. My wife's 201...
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