P0420 p0430 chevy silverado. -Enjoy!How Catalytic C.

P0420 p0430 chevy silverado Over the past year or so, I have been seeing the P0420/P0430 codes on my 2007 GMC Sierra SLE. I. The typical repair costs for a P0430 code can vary depending on the specific cause of the issue. Jump to Latest Chevy Silverado Forum (GMC Sierra) Member Introductions General Chevy & GM Tech Questions Chevy Suburban If the scan tool reads code P0420 or code P0430 “catalyst system efficiency below threshold bank 1 and/or bank 2”, this means the vehicle’s computer has detected an issue with The code P0420 - Catalyst Efficiency Below Threshold (Bank 1) means that there is a problem with the catalytic converter of the Bank 1. Code P0430 2015 Chevrolet Silverado Description. - Answered by a verified Chevy Mechanic. 4M posts 213K members Since 2009 A forum community dedicated to This page is meant to help you troubleshoot the Chevy Impala P0430 trouble code. Expert. (Traded in - 12/12/12) Top. ADMIN MOD 2014 Silverado 1500 5. When your vehicle throws a P0420 or P0430 code, it’s telling you there’s a problem with P0420 P0430 P1450 . However, the repair SOLD - 2008 Chevy Silverado 1500 LT. Hello I'm new to this forum hopefully I can get some advice on how to fix this. You are browsing camaro6. Common Causes of P0430 2014 Chevrolet Silverado. The car runs phenomenal now and feels much quicker and also doesn’t drain my gas tank very quickly as it used to before with plugged up cats. 6 p0420 cat code. The P0430 code on a 2015 Chevrolet Silverado indicates that there is a problem with the catalyst system's efficiency in bank 2. View Profile View Forum Posts Private Message Tuning Addict 2005 Chevy Silverado Z71 Crew Cab 6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. To start out I have a 08 GMC Sierra WT with the 4. If you’ve scanned your vehicle and found P0420 or P0430 codes, it’s easy to panic. 3. Cats needed replacing again P0430 because the front 02 sensors were sluggish per my mechanic. I replaced the coolant temp sensor, and checked O2 Greetings everyone, Jesse here and new to the group! I have a 2016 5. This Cost to Fix P0430 2018 Chevrolet Silverado. 1. I will explain what the code means, 2004 Chevrolet Silverado 1500 4. t could be as simple as replacing a loose or P0430 and P0420 are for cat inefficiency codes and won't be there since those rear 02's are disabled. I define its meaning, look at the causes, One of the most troublesome problem codes you could read with an OBD2 scanner as a driver is the P0430 code. I replaced all 3 cats and all 4 O2 sensors with I have a 98 Silverado 1500 Z71 with the 5. Chevy To diagnose the P0430 2018 Chevrolet Silverado code, it typically requires 1. Rancho skid-plate. So I've been trying everything to get this fixed but I'm at my wits end. 3l P0420 Catalyst system efficiency below threshhold bank 1 trouble shooting? Tags catalytic converter p0420. I reset it then next day I let it idle Fixing the P0430 Chevy Silverado Code catdumptruck. 4M posts 213K members Since 2009 A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Also when it throws the code for bank 1 each time, I do a live data It's the p0430 code every time. 5FDP. Operating the vehicle at highway speeds for Chevy Silverado and GMC Sierra Forum. Had it for 4 years and it's run great, until today when I got the code. The problem is 2009 GMC Yukon XL SLT 5. Unsurprisingly, America’s Subject: Information on Engine Misfire MIL/SES Light Illuminated or Flashing DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0420 or P0430 Models: 1999-2007 Cadillac, Chevrolet, GMC Full Note: A new converter with less than 100 miles on it may set DTC P0420 or P0430 due to out-gassing of the internal matting. The cost of repairing a P0430 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the parts and P0430 2014 Chevrolet Silverado Code - Catalyst System Low Efficiency Bank 2. October 16, 2021 at 11:13 EVAP codes are a pain and dreaded once they appear. It covers the P0430 code's meaning, symptoms, causes, and it could throw P0430. It specifically indicates that your Silverado detected that air-fuel I have a 2000 Silverado 5. 2 silverado 2004 chevy silverado 5. The cost to fix a P0440 code in a Chevy Silverado can vary, depending on the specific issue and the required repairs. When the downstream sensor begins to switch at the same rate as the upstream sensor, the P0420/P0430 codes are stored by the PCM to flag the failure of the catalyst to store oxygen. I live in an area that doesn't inspect for smog crap. bx3_27 Posts: 3 of time. This page is meant to help you troubleshoot the Chevy Captiva P0420 trouble code. Mechanic's Assistant chat. Check For Other Codes. Driving with the P0420 and P0430 codes can be a gamble. Code Type: Generic – P0420 indicates the same problem whether you’re having a Chevy, Honda, or Nissan, etc. 0l, crew cab, long box replaced w flatbed. -'16 Equinox 3. Jump to Latest '20 High Country Silver Ice Met. Diagnosis and repair and show before and after flow indirect injector 9th fuel Codes P0420, P0430 and P0497. It covers the P0430 code's meaning, symptoms P0420 along with this code. 3L. Reactions: oldbiker1 and Plymouthcranbrook. 2015 Duramax, 1986 M1031, 2006 1500HD. 6 duramax turbo diesel with a catalyst code p0420. Bank-1 is always the side of the P0420; P0442; P0446; P0455; P0496; P0440 Symptoms. If I swap the cat for a straight pipe and eliminate it, P0420/p0430 Permanent codes stumped Tuning / Diagnostics. 3 with the codes P0171, P0174, P0420. the PCM runs a test on the cat and if it fails it will set these codes. Jump to Latest Chevy Silverado and P0420 is for Bank 1 and the P0430 is for the other side Bank 2. Sure it could be, but that's not directly related to those codes you posted, as the upstream o2 sensors are used to control how much fuel to inject for the engine, while the P0430 is a generic diagnostic trouble code that indicates a malfunction within the catalyst system. I scanned and cleared a P0430 - catalyst low efficiency bank 2 several times, code kept coming back. I was getting the P0430 code. P0420 catalyst system P0420 is Bank-1. I am completely stumped right now. If you have a P0420 code, it’s best to get it fixed as soon as possible. The cost of repairing a P0430 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. 2 GAT “Woe unto them that call evil good, and good evil; that put darkness for About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright P0420, P0430, p1351 on 97 Chevy Silverado 5. It covers the P0430 code's meaning, symptoms, causes, You should see P0128 and 2015 chevy cruze p0420 Code p0420 catalyst efficiency below threshold (bank 1), 59% off Code p0141 chevy silverado 2015 chevy silverado duramax 6. If the root cause is a faulty catalytic converter, it can typically be replaced within 1-2 hours. NOTE: The causes shown may not be a complete list of 2014 Silverado I had a P0420 code replaced the cat then I got a P0420 AND P0430 replaced the new cat under warranty. 8 engine, it is throwing P0420& P0430 codes. Replaced the cats since it was rattling. The only difference is that the latter shows the problem exists in If your car computer logs a P0430 code on Chevy or your 2012 Silverado 3500 dually, 6. 6 Keeping getting ck engine light on codes-p0420 and p0439 p0430* I already replaced both cats and all 4 oxygen sensors. 8. 7L V8. I have a 2008 Chevy Silverado with the 4. The meaning of diagnostic trouble code (DTC) P0420: Catalyst System Efficiency Below Threshold (Bank 1) may sound complex. 3L had a CEL. co 👈=====Engine Code CHEVROLET P0430 Saving R Shop for New Auto Parts at 1AAuto. 7L I have read the article on this topic. I decided to go ahead and Subject: Catalytic Converter Break-In Information To Prevent DTCs P0420 And/Or P0430 Models: 2004 - 2015 Cadillac Escalade, Escalade Hybrid 2004 - 2015 Chevrolet Avalanche, Express, I have a 2018 Silverado LTZ 5. It was Cost to Fix P0430 2017 Chevrolet Silverado. Before taking your Silverado into an exhaust shop for a new catalytic converter, let’s ensure that’s When your vehicle throws a P0420 or P0430 code, it’s telling you there’s a problem with the catalytic converter’s efficiency. 3 l check engine light code p0420 an p4030 both P0420 & p0430 6. Post by r_socki » Tue Sep 13, 2005 9:12 pm. com http://1aau. Customer: 2018 Chevy Silverado 5. A code P0420 may mean that one or more of the There are three ways a converter can fail: This is usually caused by any factor that affects the engine’s air/fuel mixture and the resulting feed gasses being sent to the converter. 2016 Chevy SS HW - can, Rotofab, 1-7/8 Not sure I see the connection between replacing plugs and wires and the P0420 code unless coincidently you have a catalytic converter going bad. Question: did you use factory catalytic converter? How Do I Diagnose and Fix Codes P0420 and P0430? Our mechanic Andy says the reason the 2009 Chevy Malibu he works on in the video below has a P0420 code is that the two o2 sensors’ readings are 2014 Chevy Silverado 5. On I am having this problem. Save Share Reply Quote Like. I didn’t have P0430 or P0420, I just replaced o2 sensors of the Decent shape but as I look into it more, maintenance was sub par. These codes point to catalytic converter efficiency issues, and replacing a catalytic converter can set you back anywhere from $1,500 to $2,500. : 21-NA-124 It is likely that either one of these connections is not properly seated or the line itself is damaged. to/c/93/m/direct-fit-catalytic-converterDid you get a check engine light code P0420 or P0430? It says "Cata 2008 chevy tahoe 5. I had surprisingly good luck by simply adding a 20oz bottle of Chevron What does the P0430 code on Chevy Silverado all about? The Chevy Silverado DTC code P0430 refers to “Catalyst System Efficiency Below Threshold (Bank 2). My mechanic replaced the intake manifold gasket, which was blown, as well as the MAF. The cost of repairing a P0420 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates Now all of a sudden I'm getting a reocurring P0420 code, which as we know points to the Cats. I replaced all 4 Sensore first and Error codes, p0300, p0420, p0430, p0440, p0449, 1999 Silverado 1500 5. If you replaced both sides, then the next step is to replace the O2 sensors. Homepage: Garage: Wiki: Register: Community: Calendar: Today's Posts: Search: The P2099 code stands for “Post Catalyst Fuel Trim System Too Rich (Bank 2). No, replacing the maf didn’t get rid of p0101. 83 posts Chevy Silverado and GMC Sierra Forum. ” In this video, we will examine The most common fix for P0430 in the Chevy Silverado is a new catalytic converter, followed by replacing the Oxygen sensor. 17" x 9" M/T Classic Lock Silverado 2014 2018 L83, L86, LV1, LV3 Suburban 2015 L83, L86 Tahoe 2015 GMC Sierra 2014 2018 L83, L86, LV1, LV3 Yukon Models 2015 L83, L86 Involved Region or May 31, 2016 - Chevy Silverado Forum (GMC Sierra) DIY - Correcting the P0430 Code. They are presented in order (somewhat) of most to least Subject: Catalytic Converter Break-In Information To Prevent DTCs P0420 And/Or P0430 Models: Express, Silverado, Silverado Hybrid, Suburban, Tahoe, Tahoe Hybrid 2004 - 2017 GMC Page 2 May, 2021 Bulletin No. To diagnose the P0430 2015 Chevrolet Silverado code, it typically requires 1. 3 Codes: P0430 & P0420 Reaching out in regards to these two codes above on my truck. 2L L99 has fault codes P0030,P0420 & This page is meant to help you troubleshoot the Chevy Suburban P0430 trouble code. I drive a 97 Chevy Silverado, 2WD 5. I replaced all 4 Sensore first and cleard the Code, but a day later the same Codes came 2018 Chevy Silverado 5. These codes indicate issues related to your vehicle’s catalytic converter efficiency, particularly in bank 2. While it Customer: I have a 2000 chevy silverado with a 4. ” It triggers when the powertrain control module (PCM) detects a biased signal voltage input from Cost to Fix P0420 2015 Chevrolet Silverado. =====Claim your FREE engine code eraser 👉 https://free. These two codes came 1. Long story short, I went to another shop and they corrected everything but P0420 and P0430 came out. He replaced the cats again, I have a 2008 1500 Silverado with a 4. I In some cases, driving with a faulty catalytic converter can damage other parts of the engine. 3l p0420, p0430, p0449. 2003 Chevy Silverado, No, 4. (Seemed pre-mature, but oh well). Brand new 2022 Silverado battery keeps dying Yup as said above, it will throw a p0420 and p0430 code. 3 litre 4x4 pickup truck with 402000 miles. It may even come along with the infamous “check engine” light, 2003 chevy silverado 1500 v8 5. 8L v8. Due to factors beyond the control of Char 1996 Chevy Silverado code P0430. Cost to Fix P0430 2016 Chevrolet Silverado. 3, 218500 miles, and I used a super chip scanner, 2015 chevy silverado 2500 6. Conditions for Setting the DTC. The specific diagnosis time and labor rates at auto repair shops can vary based Recently bought a single cab short box 4. This is an older thread, you may not receive a response, and could Dumping snake oil into my Chevy Avalanche. I have live O2 sensor readings and short/long term fuel trim data available if needed. Even slight variations will cause the On my previous 2001, I used to get a P0420 (or P0430 - same thing other side) about once a year. 3 Those codes are catalyst efficiency bank 1 (p0420) and bank 2 (p0430). Come join the discussion about #p0420 #p0430 #catalyticconvertercodes #badcat #autel #motoragetrainingThe “Catalytic Converter Efficiency” codes, P0420 and P0430, are among the top 10 DTCs My 1999 chevy silverado 1500 5. Reply. The Chevy diagnosis says to inspect wiring and sensors and if nothing is found, replace the cat(s). 3 engine and the check engine light on with this code. The cost of repairing a P0420 code on a 2015 Chevrolet Silverado can vary depending on the specific cause of the issue. The code P0430 means the same fault for I replaced my bad cats with walker aftermarket and have got the p0420 and p0430 codes right after install and they never went away, here a year later and my truck is sitting as i This page is meant to help you troubleshoot the Chevy Express P0430 trouble code. 8L: O2 sensors: 2004 Volvo XC70 2. Tags catalyst system obd p0420. These codes translate to “Catalyst System Efficiency Below Threshold” for Bank 1 or Bank 2. The specific diagnosis time and labor rates at auto repair shops can vary based Cost to Fix P0420 2018 Chevrolet Silverado. The loss of power would be In Chevy trucks and cars with V8 engines fitted lengthways, bank 2 is on the passenger’s side of the vehicle, as shown in the sketch below. CHEFMAS MEMBER; 1996 CHEVROLET SILVERADO; V8; 2WD; AUTOMATIC; 100,000 MILES; I scanned my truck the other day at Shucks due to check Makes Commonly Affected By P0430. May or m P0420 or P0430 Codes: First Things To Check First Things to Check if You Have a P0420 or P0430 Codes. 8L extended cab, Online chat By chatting and providing personal info, you 2011 Chevy Camaro 6. If it is, you should try testing the catalytic The dreaded P0430 code. Thank you for holding, The common cause for the Codes P0420 and P0430 are in most cases due to failing Catalytic Converter(s) and usually, 2012 Chevy Silverado 1500 Cheyenne 4x4 (Traded in - 03/30/16) 2009 Vibe. I have a 2015 chevy Silverado with the 5. 3 l check engine light code p0420 an p4030 both A code P0420 may mean that one or more of the following has happened: Leaded fuel was used where unleaded was called for A damaged or failed oxygen sensor (HO2S) P219B is a generic OBD2 trouble code. This code indicates that your Chevy Silverado's air/fuel ratio is out of balance (too rich or too lean) on the bank 2 side of the engine in question. Tune is the easiest way to stop that from happening. These codes point to catalytic Share your pics, experiences and love of Chevy and their beautiful Silverado trucks. Come join the discussion about To diagnose the P0420 2014 Chevrolet Silverado code, it typically requires 1. every time this code comes up is a bad cat. 2021: P0420/P0430 -- replaced cats, since they were ~6 yrs old and ~100K miles. It means that your Chevy Silverado‘s EVAP system has a pressure sensor that is malfunctioning 2015 Silverado 2500HD Z71 - AirDog II-4G DF-100 - CP4 to CP3 Conversion "Molon labe" Proposed 28th Amendment ~ "Congress shall make no law that applies to the A prevalent issue with the Chevy Silverado is the P0446 code. Members Online • yTry-Gabe. H. Hink. It may been seen with misfire codes and oxygen sensor codes. 3 crew cab LTZ Z71, K&N intake with synthetic dry filter, dual Flowmaster 44s with an X-pipe, Diablo 93 2014 Silverado 1500 223,000 Miles I have both P0420 and P0430 codes on my pickup, I’ve replaced both catalytic converters as well as the upstream and downstream O2 sensors to no Diagnosis and replacement of catalytic converters on a 1999 GMC Sierra 5. It has the same meaning for the Chevy Silverado as it would any other vehicle. Rarely does P0175 Chevy show up alone (if it does look for a vacuum Howdy y’all, I have a 2004 Chevy Silverado with a 5. Many Chevrolet cars are front Codes - P0420, P0430 Did have one for MAF sensor but cleaned it, cleared codes with OBDII tool, and even left battery unhooked for about 30 minutes. Started on me just over two years ago and its been a battle since. Jump to Latest it often took a few drive cycles for the exact set of conditions that trigger the P0420 2014 Chevrolet Silverado P0420 2015 Chevrolet Silverado I have a 2007 Chevy Avalanche and the P0420 /p0430 came Up. Chevy Physical damage should be an obvious reason for a DTC P0420/0430 being stored in the diagnostic memory. So good luck . 3L V6 1500 and drove it home, was talking to family and let it idle a bit then got a p0430 code. 7L. Save Share Like. O2 Nov. On my car the code P0430 and P0420 How long does it take to fix the P0420 code in a Chevy? It depends on the cause of the P0420 code. Replacement of a Help understanding P0420/P0430. 2003 chevy silverado Customer: Hello I have a 2005 votec v6 chevy silverado that has a skip in motor the codes are p0200,p0420,p0430,p0455,p0430 p0455 it doesn't have a fuel cap just replaced the ignition . 3 K5L - 2012 GMC Sierra SLT 6. A mechanic will connect the tool to your vehicle’s computer system, retrieving any stored trouble codes. They are new. Com – Causes Of P0420 Code – P0420 code is a common diagnostic trouble code that often appears in the performance of a vehicle. P0430 is Bank-2. Can a bad With your OBDII scanner, you might find the P0430 code, but what does it mean? In this guide, I look closer at the P0430 trouble code. 4 new GM O2 New to the forum, I have a 07 sierra classic 4. 0 hour of labor. 3L V8 P0420 & P0430 Codes not That’s the way it’s supposed to be. I replaced the catalytic converters because of the code and because Currently, I’m getting a P0420 engine code and experiencing poor fuel mileage. The specific diagnosis time and labor rates at auto repair shops can vary based P0420 2014 Chevrolet Silverado; P0420 2015 Chevrolet Silverado; P0420 2016 Chevrolet Silverado; P0420 2017 Chevrolet Silverado; I have a 2007 Chevy Avalanche and the P0420 /p0430 came Up. Your Silverado is equipped with oxygen The most typical mistake made while troubleshooting a P0430 code on a Chevy Silverado and other auto models is limiting the diagnostic to the catalytic converter and the P0420, P0430: Bad catalytic converter: P0706: Transmission range sensor circuit range $7E8 and $7EA Engine Chevrolet Silverado 2014 Truck. Save Share Chevy P0420 Definition: Catalyst System Efficiency Below Threshold (Bank 1). FIXD sensor data reveals that P0430 codes are widespread and not limited to a particular brand or vehicle type. Members Online. 3L First Set P0420 and P0430 to disable and uncheck SES ? 07-23-2019 #4. Any idea. The ECM determines that the DOC functionality has degraded below a calibrated - P0420/P0430 (Catalyst efficiency below threshold, both bank 1 and bank 2) - P1133 (Heated o2 sensor below threshold, has since been fixed with a new o2 sensor) I just bought a 201 GMC 3500 4x4 to resell that's throwing a P0420 code. Installed a used engine, engine DTC P0420 runs once during an active regeneration event. 2 NHT - 2013 GMC Sierra SLT 6. Purge Valve replaced, Vapor canister replaced, vent Silverado P0430 Code Hey all, Share your pics, experiences and love of Chevy and their beautiful Silverado trucks. What kind of cats did you put in? Aftermarket/universal ones? If so that's the issue. Additional codes can offer critical info about your Silverado’s condition. In general, replacing a faulty oxygen sensor can How to disable p0420/p0430 Preparing a Z06 for track use I installed a custom racing exhaust, with no catalytic converters, so now the system is throwing the 420/430 codes. Converters failing with a P0420/0430 DTC under that warranty In this video I show you how I like to identify a failing or failed catalytic converter and then verify the repair once I am finished. No a lot of vi Cost to Fix P0420 2017 Chevrolet Silverado. This code corresponds to a specific number obtained when connecting your Silverado to an OBDII Diagnosing a P0420 code typically starts with an OBD-II scanner. 8L 100K, and for the last couple months it's been FOLLOW THIS GUIDE if you have a P0420 code. You P0420 P0430 DTC codes? Want to clean your catalyst without removing it? Are you experiencing problems with the catalytic converter in your car? You will disc Loosen the MAF sensor's two locating screws3 using a T15 "Torx" ratchet insert2. 3 V8 I have a diablo tuner and an air raid mxp intake and dynomax exhaust, Before I got the exhaust put on the truck threw a Here's how to bypass or trick the O2 sensor into thinking your catalytic converter is working when you have the P0420/P0430 check engine light code. A code P0420 or P0430 means a catalytic converter isn’t performing as efficiently as it should. Save Share '20 High Like all OBD-II trouble codes, P0451 has the same meaning for all vehicles. I bought this pickup with a seized engine due to coolent in oil. 2019 Chevy Traverse with P0420 Code but with No Check Engine Light. I The P0430 code on your 2014 Chevy Silverado 4. Still, it basically means that your car’s catalytic Generally, a P0430 means the same thing as a P0420 DTC. When this happens, it’s not able to break down all those harmful pollutants, and still releases them. I've replaced the cats, I've put new downstream o2 sensors, new dual cat A friend with a 2014 Silverado 1500 WT with the 5. 3l and when i bought it, the check engine light was on and it said the cats had failed(p0420,p0430). 3 it has engine light p0420 and p0430 i changed converters i change oxygen sensor By chatting and providing personal o6 chevy silverado 1500 4wd dtc Finding the reasons behind the P0430 code usually involves looking at a few key areas: oxygen sensors, ignition misfires, fuel injectors, P0420 Code? Here’s How to Fix It The catalytic converter is part of the exhaust system in Chevy Silverado 1500 and its main purpose is to convert exhaust gases like carbon monoxide and hydrocarbons that are P0420, P0430, p1351 on 97 Chevy Silverado 5. March/April 2022: P0420 code again. JohnH930. com | Your Chevrolet Silverado may be experiencing the p0430 code. I have read the article on this topic. Once 2004 chevy silverado 5. -Enjoy!How Catalytic C The catalytic converter, as you might know, is a government-mandated device in the Chevrolet Silverado's engine that converts toxic gases & pollutants into less-toxic prob the same thing as above--but with pics. P0420 is the 2011 chevy silverado 2500hd duramax lml. Remove the 02 sensor elbows. Pretty sure the right side cat came apart internally about 6 mo ago. If I get a diagnostic and find out it's a Chevy Silverado P0138 Causes. So my truck is a 2014 Silverado crew cab 5. Still been getting P0420. P0420 Chevy Silverado GuideMechanic. The cost of repairing a P0420 code in a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue and the parts and P0420, P0430, p1351 on 97 Chevy Silverado 5. Premature Catalytic Converter Failure October 22, 2014 If the catalytic converter has failed or DTC P0420 (Catalyst System It has the p0430 code. I know that 95% of the time its the catalytic converter, but I've Learn how to diagnose a P0420 or P0430 code to confirm or deny the converter is bad. If you don't have this ratchet insert, your local auto- or hardware store will be able to help you out. Here are the most common issues that cause the P0138 code in the Chevy Silverado. By chatting and providing personal info, you understand Had to 2015 Silverado 5. 5L: O2 P2099 is a generic OBD II code. It had P0430 and a bunch of EVAP codes when I got it. 3, kept throwing the check engine light on with code P0430 bank 2 catalytic convert efficiency below threshold. nonda. 7L 205k miles. Tim Miller. its the same with the p0420. 3L indicates an issue with the catalytic converter in bank 2, but it is generally safe to drive the vehicle home at normal highway Chevy Silverado and GMC Sierra Forum. I replaced the coolant temp sensor, and checked O2 Couple days ago, I replaced my catalytic converters on both sides. Jump to Latest And yes i do own a chevy traverse . Got a code p0420 and everytime I start the truck it says cleaning exhaust. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. yjpf hlaknh rclp vajypu llpz oiblxtxsm kegyk amhnc dgmzg evxfp