Kia soul code p0420

Sep 20, 2021 · If your car had the code p0420 stored and it is a 1.6 that has the software recall you would also get a new cat installed as part of the recall. If your car had the p0420 code and misfire codes a compression test will be done under the recall and if it falls below spec they will replace the short block as part of the recall.

Kia soul code p0420. Posted by u/That-Mall-8347 - 8 votes and 7 comments

About 1000 miles ago I started getting both P0420 and P0430 codes. ... Come discuss the Kia Sorento, Rio, Sportage, Soul and more! Show Less . Full Forum Listing. Explore Our Forums. 2011 - 2013 (XM) Sorento Forum 2016 - 2020 Sorento Forum 2003-2010 Sorento Forum 3G 2011 - 2016 Sportage Kia Cee'd Forum.

The Kia Spectra has three engine options--the 1.6-liter four-cylinder, the 1.8-liter four-cylinder and the 2.0-liter four-cylinder engines. Although the location of the starter is ...Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. 1 (855) 347-2779 · [email protected]. Read FAQ. GET A QUOTE. P2191 code definition System Too Lean at Higher Load Bank 1 What the P2191 code means P2191 is an OBD-II generic code for the engine control module …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 driveability of your Soul. Certainly, anytime the service engine soon light is on, it’s good to deal with it as ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code KIA P0442 Saving Repair ...The P0420 code is set when the Catalyst monitor sees a decrease in voltage from the rear Monitoring Oxygen Sensor(s) and an increase in switching activity—from rich to lean to rich, etc.—that closely resembles the front Oxygen Sensor(s) during the time the computer is activating the Catalytic Converter monitor test.

May 9, 2022 · jeremiahchub. 56 posts · Joined 2017. #7 · Jun 12, 2019. Also, you may want to try replacing the FUEL pressure regulator itself. that code also goes with that as well. 2010 Molten Red Kia Soul +, 2.0L Beta II Engine, Mitsubishi 5-Speed (Yes the transmission real is made for Kia by Mitsubishi), and getting used to So Cal. Oxygen sensors are only a part of a greater system, meaning if the p0420 code (or p0141, or p0135) is thrown, that doesn’t necessarily indicate the oxygen sensors need replacement. Rather, there could be something else in that system does that’s causing the oxygen sensors to appear faulty. This is actually the case with most check engine …My 2012 Kia soul has a code P0420, C1555, P0135, P2191 and P2237. It had a hole in the flex pipe so I replaced it and replaced both O2 sensors. My check engine light was on, now it's off. Code P0455 and. My check engine light was on, now it's off. Code P0455 and P0420, mechanic says I need 2 catalytic converters.Summary. The P2191 code stands for “Manifold Absolute Pressure/Mass Air Flow – Throttle Position.”. It’s logged once the PCM detects a lean mixture in the system. Some issues that can trigger code P2191 include a bad fuel injector, a weak fuel pump, and a malfunctioning mass airflow sensor. An illuminated check engine light, decreased ...2016 Kia Soul Pulling Both P054A & P0420 Codes. I have a 2016 Kia Soul with 79k miles on it. The check engine light came on a few months ago & it pulled the P0420 code for the catalytic converter, but after a few days, the light went off without me doing any further diagnostic testing so I left it alone. Today the check engine light came on again.Here’s a good P0420 diagnostic order for the Kia Sportage: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Sportage is to verify there aren’t any other trouble codes. Three types of codes can give clues as to what’s going on with your vehicle. Misfire Codes. 2016 Kia Soul Pulling Both P054A & P0420 Codes. I have a 2016 Kia Soul with 79k miles on it. The check engine light came on a few months ago & it pulled the P0420 code for the catalytic converter, but after a few days, the light went off without me doing any further diagnostic testing so I left it alone. Today the check engine light came on again.

#3 · Sep 17, 2018. The more pertinent information you provide about the vehicle, such as mileage, service history, overall condition, does it burn oil, heavy on fuel, ........... the …My daughter has a 2015 Kia soul with the 1.6. 106,000 miles and it’s throwing the p0420. I reset it and it comes back. I ran the vin and it shows no active recalls. Is there a way to verify Kia actually already did the converter or does the recall notice state to take it to a Kia dealer when the code comes on.How to fix you emissions p0420 code for cheap, easy, fast. Watch this video and learn how to turn off you cars check engine in under 10 minutes with parts av...I have a 2012 Soul+ Automatic (KNDJT2A63C7427727) with ~38500 miles that I got new. And a few weeks ago I got a Check Engine Light; off now, not reset. Took it to O'reillys to get the code read and I was told it was code p2096. I have an appointment soon with Kia but wanted to know more about what may possibly be going on before hand.... Now, 5 months later, p0420 is back. Where should I even start troubleshooting? O2 sensors? Compare pre/post cat temps? Any input is greatly …

Family fare pharmacy rockford mi.

My daughter has a 2015 Kia soul with the 1.6. 106,000 miles and it’s throwing the p0420. I reset it and it comes back. I ran the vin and it shows no active recalls. Is there a way to verify Kia actually already did the converter or does the recall notice state to take it to a Kia dealer when the code comes on.Kia P0420 Catalyst System ... OBD2 Code P0421 Kia definition: Basically this means that the oxygen sensor ... ,2013 Kia K9,2013 Kia Cross GT Concept,2013 Kia Ceed SW,2013 Kia Ceed,2013 Kia Carens,2013 Kia CUB Concept,2012 Kia Soul,2012 Kia Rio,2012 Kia Ray,2012 Kia Picanto,2012 Kia K2,2012 Kia Grand VQ-R,2011 Kia Sportage,2011 Kia ... P0420 is a diagnostic trouble code (DTC) for "Catalyst System Efficiency Below Threshold (Bank 1)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic ... The P0420 code in a Kia Rio refers to a failed or malfunctioning catalytic converter. This code indicates that the catalytic converter is not working effectively in reducing emissions, leading to increased pollution and potential damage to the vehicle’s engine. It is important to address this issue promptly as it can lead to more serious ...

Oct 8, 2020 · 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 P0420 code is combined with other codes, try fixing the other codes first. Read more: P0420 Kia - Warm Up Catalyst Efficiency Below Threshold Bank 1 Sep 28, 2022 · 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... The P0420 code in a 2015 Kia Soul is a diagnostic trouble code that indicates a problem with the catalytic converter efficiency. This code typically means that the catalyst system is not operating at its optimal level and may need to be replaced. Causes of the P0420 code in a 2015 Kia Soul.junker 1. 2015 Soul, 1.6 L, V4 - 93,000 + mi. Code P0420 Catalyst operating below minimum threshold. P0420 is an all around code dealing with emmisions. To learn more about this code, view YouTube videos of scannerdanner. or any other videos explaining about 02 sensors, fuel trims, catalytic converter, etc. I bought a $25 scan tool, … P0420 is a diagnostic trouble code (DTC) for "Catalyst System Efficiency Below Threshold (Bank 1)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic ... Oct 8, 2020 · 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 P0420 code is combined with other codes, try fixing the other codes first. Read more: P0420 Kia - Warm Up Catalyst Efficiency Below Threshold Bank 1 P0420 is set when the ecm believes that it is less than 50% efficient than designed. So you might see it not fluctuating as much as a completely failed one. It's important that there are no leaks and to …The sludge buildup on the OCVs appears to be the cause of the P0011/P0014 codes on my car. Remove and inspect both OCVs. In my case intake and exhaust OCVs had similar buildup. If there's sludge buildup, carefully remove it without damaging the fine mesh screen present on the valve. Once this buildup was removed, the stored code …... Now, 5 months later, p0420 is back. Where should I even start troubleshooting? O2 sensors? Compare pre/post cat temps? Any input is greatly …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 driveability of your Soul. Certainly, anytime the service engine soon light is on, it’s good to deal with it as ... The code is a generic one. Everything i read said it could be the upstream o2 sensor, gas cap, or catalytic converter. Mine turned out to be the catalytic converter.

Kia Soul P0420 OBDII Code Defined. P0420 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here’s the technical definition for your car: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System Efficiency. Your Soul’s exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses.

Feb 7, 2020 · 2015 Kia Soul.90K miles. 1.6 AT. p0420 code. did temp check up/down stream for both cats and found downstream was 125~ degrees cooler than up stream so I know it’s a bad cat (s). But here’s my situation: 90K miles, didn’t have recall done since my VIN was never under the recall list (searched multiple times) P0420: Catalyst Efficiency Below Threshold. Related Vehicles: 2012-2018 Veloster 1.6L GDI. Notes/Hints: Check the downstream O2 sensor. If the sensors signal is dropping when it shouldn't, or reading low voltage during WOT, replace it first, clear code (s) and recheck before condemning the catalytic converter.Apr 11, 2024 · I recently bought a 2014 Soul Base. It has 110,000 miles on it. A few days after I bought it, the check engine light came on. Auto Zone said it was a P0420 code. I took it to Pepboys and they also said it was the same code, but that it was a history code and they didn't recommend changing the catalytic converter. The most common fix for P0420 in the Kia Stinger is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Stinger 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 Kia Stinger: 1. Check for Other Codes.P0420 Code. How to fix it. Don't spent tons of $$$. ~This also true for the po430 Code!Check out My Amazon Auto Accessories Store! Lets make that Weekend job...If the P0420 code is combined with other codes it's always a good idea to fix them in order. Your Catalytic Converter Should Never Have Failed. If It Did, Th... no todo el tiempo es el vatalizador el problema P0441 is one of the more common OBD II codes that can occur in the Kia Soul . It is frequently caused by a loose or bad gas cap, cracked or disconnected EVAP system hoses, vacuum leaks, or a bad purge valve. Always start by taking a look at the gas cap. P0441 is related to the evaporative emissions control system (EVAP) and should not be ...Our 2012 Rio5 also has had the P0420 code and came up at about 77k miles, now at ... The CAT was plugged up. The part cost me $820 Canadian dollars aftermarket, Kia wanted $1000 just for the part. I went over 70k kms with ... Come discuss the Kia Sorento, Rio, Sportage, Soul and more! Show Less . Full Forum Listing. Explore ...I just got this code on my 2019 Soul. My little inexpensive Autel AP200 showed no codes on the Kia side, it didn’t even see my 2019, so I had to say it was a 2018, but when I went into obd2 side it showed P04E0 current, pending and permanent. I’m about to load the parts cannon! 😳 But maybe this is still covered under my 5/60 warranty, might …

Cvs pay raise for pharmacy tech.

Colorado c 470 toll road.

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). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix ... A serpentine belt drives the alternator on the Kia Sephia and changing it is a great project for the novice or home mechanic. The belt routing is important, so be sure to check the...3120 posts · Joined 2016. #8 · Jun 3, 2017. I got that code (P0326) today. First code I've had in almost five years and 57k miles. I may have done exactly what was said in the last post. I've tried resetting the code with my ScanGauge II and I still have it.The E8 and E9 represent different modules or parts of the vehicle from where the codes are retrieved. E8 represents the engine control module while E9 represents the transmission control module. In short: 7E8 means a request code from ECM. 7E9 means a request from TCM. After inputting the codes a request will be sent and …jeremiahchub. 56 posts · Joined 2017. #7 · Jun 12, 2019. Also, you may want to try replacing the FUEL pressure regulator itself. that code also goes with that as well. 2010 Molten Red Kia Soul +, 2.0L Beta II Engine, Mitsubishi 5-Speed (Yes the transmission real is made for Kia by Mitsubishi), and getting used to So Cal.The vast majority of vehicles produced and sold include a factory radio or CD player. For most people, that's fine. But if you're an audio enthusiast, or want to add extra features...Here’s a good P0420 diagnostic order for the Kia Sportage: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Sportage is to verify there aren’t any other trouble codes. Three types of codes can give clues as to what’s going on with your vehicle. Misfire Codes.A couple months ago, I bought a 2017 Kia Soul used. ... Code P2191 | 2017 Kia Soul 1.6L Engine 140,000 Miles | Not the Fuel Pump . A couple months ago, I bought a 2017 Kia Soul used. ... My check engine light turned on and I got it tested and got the P0420 code.A P0420 code is set when the upstream sensor and the downstream oxygen sensor sense the catalytic converter is not doing its job. Basically, the amount of oxygen going into the converter is not being burned, and it detects it through the downstream sensor. Oxygen is the key here. Modern Engine Management Systems …To diagnose the P0011 KIA 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.Check engine light code P0420 on 2014 kia soul . Changed the catalytic converter and both O2 sensors not sure what is causing the fault Locked post. ... Try having a mechanic look for past misfire codes. My Kia was part of the recall and they fully replaced my cat for free. ….

Sep 20, 2023 · P0420 is catalytic converter efficiency below threshold. Triggered when the ECU doesn't like the output of the downstream O2 sensor. If I got 288,000 miles out of a cat I would be doing a happy dance. They don't keep working forever. 2016 Kia Soul ! sadiem15, rhysoul and bwdz75. Like. Fixing P0128 in the Kia Soul is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open – Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to ...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 …2014 Kia Soul P0463, P0420,P0300- where to start . My adult daughters car. This probably rides in town as good as any of my Toyotas and Hondas that I own. Base model, 160k miles, second owner (last 100k miles). ... 2017 Hyundai Accent Code P0420 ...Car Questions. Kia Troubleshooting. This answer was rated: ★★★★★. I got a P0420 code on my 2014 Kia Soul. It states warm up… I got a P0420 code on my 2014 Kia …Was told my car had two recalls that I never got notice about. Was Still throwing that P0420 code they did a diagnosis and it is a bad cat but luckily as someone stated before and it is covered by the warranty! I have a code a P0420 pulling up my on ‘16 Kia Soul. I have about 99.2k miles on it.After a Kia and Hyundai agreed to a $200 million car theft settlement, it's still hard for vehicle owners to get affordable auto insurance. By clicking "TRY IT", I agree to receive...Oxygen sensors are only a part of a greater system, meaning if the p0420 code (or p0141, or p0135) is thrown, that doesn’t necessarily indicate the oxygen sensors need replacement. Rather, there could be something else in that system does that’s causing the oxygen sensors to appear faulty. This is actually the case with most check engine … Kia soul code p0420, In the same way that visiting a new place can help you face your fears, engaging in some form of spiritual healing can suddenly seem more appealing to travelers too. We're partneri..., p0420 uh oh. so at just under 80k (79,618) the engine light been coming and going .i go get it read free at autozone . p0420 code .a cat /sensor code. being the second owner we rush it to kia as emmissions are only covered until 80,000 for second owner . rather that then a way overpriced sensor i would be out for and a 100 dollar diagnostic fee ., P0420 Diagnosis: Kia Rio. The most common fix for P0420 in the Kia Rio is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Rio 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 Kia Rio: 1. Check for Other Codes., P0300 is a generic OBDII code that can occur with the Kia Soul. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, the ..., A place for Kia Soul owners to share tips, tricks, stories, pictures, and comments about owning the best "fun" car on the road today! ... Code P0420 advice?, Sep 20, 2023 · P0420 is catalytic converter efficiency below threshold. Triggered when the ECU doesn't like the output of the downstream O2 sensor. If I got 288,000 miles out of a cat I would be doing a happy dance. They don't keep working forever. 2016 Kia Soul ! sadiem15, rhysoul and bwdz75. Like. , As the title states, my gf has a Kia Soul that had a recall on the catalytic converter, which we took to the dealership to have fixed. They assumed the p0420 would be the cause of that (as did I) and they said they would fix the other recalls for the time being but the replacement catalytic converters would need to be ordered and they’d call back to …, The P0420 code in your 2015 Kia Soul usually indicates a problem with the catalytic converter. To diagnose the cause, you can start by checking for any leaks or damage in the exhaust system. Additionally, you may need to inspect the oxygen sensors and perform a fuel pressure test. It’s recommended to consult a certified mechanic or …, How to fix you emissions p0420 code for cheap, easy, fast. Watch this video and learn how to turn off you cars check engine in under 10 minutes with parts av..., No matter what your religion - or lack thereof - it's useful to keep an open mind about the possibility of a spirit guardian. Let's identify yours! Advertisement Advertisement The ..., I just got this code on my 2019 Soul. My little inexpensive Autel AP200 showed no codes on the Kia side, it didn’t even see my 2019, so I had to say it was a 2018, but when I went into obd2 side it showed P04E0 current, pending and permanent. I’m about to load the parts cannon! 😳 But maybe this is still covered under my 5/60 warranty, might …, Christian Roots: All Saints' Day and All Souls' Day - All Saints' Day was created by the Catholic Church to legitimize the pagan celebrations of late October. Learn about All Saint..., 2016 Kia Soul OBD2 Code P0420 Catalyst System Efficiency Below Threshold. What Does OBD-II Fault Code P0420 Mean? OBD-II Code P0420 is defined as a Catalyst System Efficiency Below Threshold P0420 Symptoms Check Engine Light will illuminate In most cases, there are no adverse conditions noticed by the driver, 426 posts · Joined 2014. #3 · Jul 9, 2015. There are a number of things that could be causing this p0420 catalyst efficiency code. The most common thing is the catalytic converter itself is no longer functioning properly. The other likely thing is the rear O2 (oxygen) sensor is no longer working properly., P050A and secondary P0420. I own a 2014 1.6 base model with a little less than 100k in it. Was have P050A code come on in cold weather with high idle at start but then recently took it to kia to get logic update. That fixed the problem of high idle but then randomly the check engine light will come on for a couple days then go off again for a ..., Note that in the case of code P0420, ... Kia. Model: Soul. Year: 2015. Miles: 93,890. Engine: 1.6. 5. Reply. Robert. 5 years ago. Fuel injector failure, replaced injectors, upstream and downstream sensors now throwing p0420 catalyst below threshold. Is it likely that the failing injectors resulted in this ?, My daughter has a 2015 Kia soul with the 1.6. 106,000 miles and it’s throwing the p0420. I reset it and it comes back. I ran the vin and it shows no active recalls. Is there a way to verify Kia actually already did the converter or does the recall notice state to take it to a Kia dealer when the code comes on., Here’s a good P0420 diagnostic order for the Kia Sportage: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Sportage is to verify there aren’t any other trouble codes. Three types of codes can give clues as to what’s going on with your vehicle. Misfire Codes., Have you read the other threads on the P0420 code? P0420 Search Results . 6-speed Manual -- Added factory cruise control and factory armrest. ... SO Sorry for your experience. I also bought a Kia Soul, 2015 model, the oil light was flickering and on constantly, but the oil was topped off etc., 2014, Soul+ P0300 code. While traveling, had to jump hard on the brakes, then accelerate within a split second. The Soul started sputtering, missing, Check Engine light blinking, then full on. Creeped down the road a …, Kia Soul P0420 OBDII Code Defined. P0420 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here’s the technical definition for your car: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System Efficiency. Your Soul’s exhaust contains hydrocarbons, … See more, How To Diagnose. If you are experiencing problems with your Kia Soul related to the P0441 code, then there are several steps you can take to diagnose the issue. First, check the fuel cap on your Soul and ensure that it is tightly secured. A loose or faulty fuel cap is often the cause of the P0441 code. If the fuel cap appears to be in good ..., Jan 29, 2019 · P0420 is a catalytic converter insufficiency code. What can trigger the cel. An Oxygen sensor fault , worn cat , maf issue , etc , You run certain test to pinpoint the issue. An inexpensive code reader with live data , can be use to look at certain pids of info to help pinpoint your diagnosis. waddy. Like. , A code P0303 may mean that one or more of the following has happened: Faulty spark plug or wire. Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel injector. Burned exhaust valve. Faulty catalytic converter (s) Running out of fuel. Poor compression., HYUNDAI KIA CODE P0420 CATALYTIC CONVERTER FIX, ENGINE LIGHT ONIf you have Hyundai or Kia and you have engine light and code P0420 Catalyst System Efficiency..., After that the P0420 code came on, ... Come discuss the Kia Sorento, Rio, Sportage, Soul and more! Show Less . Full Forum Listing. Explore Our Forums. 2011 - 2013 (XM) Sorento Forum 2016 - 2020 Sorento Forum 2003-2010 Sorento Forum 3G 2011 - 2016 Sportage Kia Cee'd Forum., 2015 Kia Soul base P0420 P0301. I have a Soul with the 1.6L, auto, 107k miles on it. Couple weeks ago got the P0420 and figured to change spark plugs, air filter, pcv, and both o2 sensors. Hoping it would fix the issue. Yesterday I caved in and bought a new catalytic converter and installed it., 2016 Kia Soul 85,000 miles 1.6L I got a check engine light with P0420 a couple days ago. Still ran fine. I was going to take it to the dealership to maybe get a new converter under the recall, but decided not to try with all the hassle I would probably deal with., The vast majority of vehicles produced and sold include a factory radio or CD player. For most people, that's fine. But if you're an audio enthusiast, or want to add extra features..., P0420 KIA Code - Warm Up Catalyst Efficiency Below Threshold Bank 1. Table of contents. What does this mean? What are the Possible Causes of the DTC P0420 KIA? NOTE: …, October 13, 2022 by Jason. P0011 is a common (and serious) OBD II diagnostic trouble code that can occur in the Kia Soul. It indicates an issue with your car’s Variable Valve Timing (VVT) system. The first thing you should do when you have this code is check your Soul’s oil. If the oil level is too low, the camshaft actuators won’t work ..., Jan 25, 2024 · The Kia Code P0420 refers to a diagnostic trouble code that indicates a problem with the catalytic converter in a Kia vehicle. The code specifically points to a catalytic converter efficiency below the accepted threshold, indicating that the converter is not effectively reducing harmful emissions. , What Does The P0420 Code Mean? 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 …