Feb 7, 2019 · I just installed a new downstream O2 sensor and still getting the P0420 code. My gas mileage is still about the same and no power difference from before the check engine light come on. I’m still getting 36-40 mpg. I run a scan tool “OBD Monitor Test” this morning while going to work and got out of value results for Module $7E8 TID $80 & $82. Jan 27, 2024 · There can be several reasons for the P0420 code to appear in a Nissan Rogue. The most common causes include a faulty catalytic converter, a malfunctioning oxygen sensor, exhaust leaks, engine misfires, or issues with the fuel system. It is important to identify the root cause accurately to address the problem effectively. A P0420 code indicates a problem with the catalytic converter. The purpose of the catalytic converter is to break down harmful pollutants created during the combustion cycle. If the downstream oxygen sensor is working properly, and there isn't an issue with the catalytic converter, its readings should remain steady. 192.168.100.1 192.168.1.1 .Jan 20, 2018 ... This 2005 Nissan Xterra runs great, except for that pesky Check Engine light is on! In this case we have a classic P0430 - "Catalyst ...Nissan Rogue Service Manual: P0420 three way catalyst function. ... P0420: TW CATALYST SYS-B1 (Catalyst system efficiency below threshold bank 1) The P0420 engine code indicates the catalyst system efficiency is below the threshold (Bank 1). A P0420 code indicates a problem with the catalytic converter, more specifically. The purpose of the catalytic converter is to break down harmful pollutants created during the combustion cycle. By using fine platinum and gold meshes to filter exhaust ... Even 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 …The Nissan Pathfinder code P0420 indicates a problem with the catalytic converter’s efficiency in converting harmful emissions. It is a generic code that is triggered when the onboard diagnostics system detects that the catalytic converter is not working as intended. Typically, this is due to a decrease in its ability to reduce pollutants or ...P0420. I've had P0420 for a little while now, I had a bad ground fixed on my frontier at nissan causing my ignition coils to run inefficiently and unstably.. they said they seen my p0420 code pop up while they had it. They said they changed my cats and it's good to go... but the light came back on. I changed the post o2 sensor with a new one ...Causes and Fixes Nissan P0420 Code: Catalyst System Efficiency Below Threshold Bank 1 - YouTube. HVAC Mechanic. 46.5K subscribers. 921. 82K views 10 months ago. How To Fix a...Anyway a complimentary OBD Code scan at my local AutoZone revealed OBD Codes P0420 & P0430 aka Bank 1 and Bank 2 Catalytic Converters. I live in an Emissions Testing state / county, so I could not have the truck titled and registered until the SES light issues were resolved. ... The Nissan Dealership, the trusted local mechanic, …P0420 2012 Nissan Rogue Code - Catalyst System Efficiency Below Threshold Bank 1 - Code Popularity: 20,361 Views - Repair Importance Level: 2/3Code Number Code Description Related Codes; P0420: Catalyst System Efficiency Below Threshold (Bank 1) P0430 - Catalyst System Efficiency Below Threshold (Bank 2)Oct 17, 2021 · Code P0420. Post by jsando2 » Sun Oct 17, 2021 7:38 pm. Okay! I replaced all my (4) upstream downstream 02 sensors, both catalysts converters, spark plugs, three coil packs all the exhaust is new and Im still getting Code P0420. Also Im getting the code for the fuel sensor but here is where my question comes into place. The P0420 code indicates that your vehicle’s powertrain control module (PCM) monitors the poor efficiency of the catalytic converter at Bank 1. This code may also be triggered due to a bad catalyst or a false alarm caused by a faulty oxygen sensor at Bank 1. Basically, Bank 1 and Bank 2 are the two sides of the engine.This page is meant to help you troubleshoot the Nissan Maxima 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. ... If the code changes to P0420, that would indicate that one of the O2 sensors is …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix P0420 =====Engine Code P0420 Saving Repair Part...A quick overview of the two most common problems with a Nissan that has a P0456 OBDII engine error code. “Small Leak Detected in the EVAP System.” Written G...Nissan Titan Tech Talk. Titan Problems & Dealer Service. P0420 code... Jump to Latest Follow 14K ... Fixing Bad Catalytic Converters With Inefficiency Code P0420 - YouTubePlongez dans le monde de la mécanique automobile avec notre guide détaillé sur le code défaut P0420, indiquant un rendement inférieur au seuil du circuit de ...Step 1 – Resolve Engine Trouble Codes. The first step is to resolve any other codes that may have come up in addition to the P0420; especially troublesome is the P0300 series of cylinder misfire codes. A P0300 code could be related to something in the ignition (spark plug or coil), the fuel injector, compression or fuel contamination.Code is PO420. Hi, P0420 code means a catalytic converter fault. The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady.Nov 12, 2018 · Here’s a good P0420 diagnostic order for the Nissan Frontier: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Frontier 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 truck. Misfire Codes. To diagnose the P0420 2010 Nissan Pathfinder 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.The most common fix for P0420 in the Nissan Armada is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Armada 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 Nissan Armada: 1. Check for Other Codes.Tech Notes. As the code description implies, the P0420 code means that the vehicle's Engine Control Module (ECM) 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 Catalyst ...Code is PO420. Hi, P0420 code means a catalytic converter fault. The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady.The code P0420 - Catalyst Efficiency Below Threshold (Bank 1) means that there is a problem with the catalytic converter of the Bank 1. The code P0430 means the same fault for the Bank 2 catalytic converter in an engine with two cylinder banks (e.g., V6 or V8). The catalytic converter or "cat" is a key component of the vehicle emission control ...The P0420 code signals a low catalyst system efficiency. This code suggests that the oxygen levels are below the desired threshold (Bank 1), which most often results from problems with your car ...Nissan Rogue Service Manual / Engine / Engine Control System / DTC/Circuit diagnosis / P0420 three way catalyst function. DTC Description. ... P0420: TW CATALYST SYS-B1 (Catalyst system efficiency below threshold bank 1) Three way catalyst (manifold) does not operate properly. Three way catalyst (manifold) does not have enough oxygen storage ...P0420 コード日産は、PCM が触媒コンバーターのバンク 1 の故障を検出したことを意味します。 Nissan P0420 コードを修正するにはどうすればよいですか? P0420コード日産を修正するために従うことができるいくつかの手順は次のとおりです。2 posts · Joined 2016. #17 · Dec 24, 2016 (Edited) Quest 2006 showing P0420, engine stuttering. Hi Guys, My 2006 Quest started showing the SES (Service Engine Soon) light some days ago, took it for a code pull and got a P0420. I kept driving it for the next few days, and this morning, when I tried to start, the engine cranks up, but …OBDII Code P0420 NISSAN - Catalyst System Efficiency Below Threshold Bank 1 | Engine-Codes.com seems like its a pretty common problem and, although im a little skeptical on this fix, it doesn't cost much to try it out.The code P0420 can be caused by the catalyst, O2 sensors before and after the catalyst. If both O2 sensors and catalyst was replaced then you may have an exhaust leak at the manifold or pipes. I suggest you have a mechanic like one from YourMechanic do a complete diagnostics of the code and inspect for any exhaust leaks to isolate the cause …To diagnose the P0420 2007 Nissan Pathfinder 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.Aug 9, 2023 · Yes, damaged or failing spark plugs can indeed cause the P0420 code. If spark plugs aren’t working properly, they can lead to unburned fuel entering the catalytic converter, which can damage it and trigger the P0420 code. If you suspect your spark plugs might be the issue, consider having them inspected or replaced. Apr 30, 2021 · =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix NISSAN P0420 ==Engine Code NISSAN P0420 Saving R... Mar 8, 2024 ... P0420 Code Catalytic Converter Replacement DIY! Amazon link for purchase Catalytic Converter Engine mounted https://amzn.to/3V70ebO ...The forthcoming Chevy Bolt and expected improvements in the Nissan Leaf will provide electric car owners with greatly increased driving range at affordable prices. By clicking "TRY...P0420 2007 Nissan Murano Code - Catalyst System Efficiency Below Threshold Bank 1 - Code Popularity: 21,441 Views - Repair Importance Level: 2/3 - Repair Difficulty Level: 2/3. Table of contents. Created and updated by William Orellana on Aug 20, 2020. Possible Causes; Tech Notes;Jan 28, 2022 ... ... Nissan Titan. Vehicle was throwing code p0420 Catalyst system efficiency bank 1 and replacing the O2 sensor fixed this code. O2 sensor was ...Common Nissan transmission problems include rough shifting between gears, hesitation while accelerating and sudden stops or jerking. These problems are all caused by faulty Nissan ...Jan 27, 2024 · The P0420 code is a common diagnostic trouble code (DTC) that appears in Nissan Sentra vehicles. It specifically refers to a problem with the catalytic converter efficiency. When this code is triggered, it indicates that the catalytic converter is not functioning optimally and may need to be repaired or replaced. I just installed a new downstream O2 sensor and still getting the P0420 code. My gas mileage is still about the same and no power difference from before the check engine light come on. I’m still getting 36-40 mpg. I run a scan tool “OBD Monitor Test” this morning while going to work and got out of value results for Module $7E8 TID $80 & $82.What Does The P0420 Code Mean? The P0420 code indicates that the Engine Control Module (ECM) has identified a decline …Many factors can cause the car computer to register DTC P0420 on Toyota or any car model. This makes it challenging to diagnose and fix the problem. Engine running rich or lean. Malfunctioning upstream or downstream oxygen sensor. Leaking fuel injectors. Lousy catalytic converter. Lousy engine coolant temp sensor.The P0744 code in your Nissan Rogue indicates a problem with the torque converter clutch circuit. To diagnose and fix this issue, you can try the following steps: 1. Check the transmission fluid level and condition: Low or dirty transmission fluid can cause torque converter clutch problems. Make sure the fluid level is correct and that it is ...20 posts · Joined 2007. #5 · May 27, 2023. My 2006 Frontier LE (Manual, 168k miles, well maintained) has been displaying P0420 / P0430 codes for more than a year. It's sporadic at best...sometimes it happens on the return trip home after everything is fully warmed up. I live in a hilly area and there doesn't appear to any consistent cause (I ...The cost to diagnose the P0420 2004 Nissan Murano code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Code P0420 should be considered as serious even in the absence of obvious driveability symptoms, since the root cause of the code is not always immediately apparent. ... Nissan P0420; Toyota P0420; …2001 Catalytic Converter (SES Code: P0420) I have a 2001 2WD King Cab Frontier. It has 116,000 miles on it, no mods, and has been regularly maintained. The service engine soon light has been on in my truck for the past couple of months, but i have had no drop in performance or mileage. I finally took it into AAMCO today and they told …Jul 10, 2017 ... Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. Oxygen sensors are also referred to as ...The P0420 code in a Nissan Murano will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. There are rarely drivability issues …P0420 is a "dying cat" code, and it may be that your recent misfire damaged the catalytic converter. When dealing with it, you need to recognize that low efficiency is one thing, failure of the honeycomb is another. With a cat that's losing efficiency, a treatment with Cataclean or a similar product, or installing spacers on the rear O2 sensors ...Jul 9, 2020 ... How To Diagnose A P0420 Catalytic Converter Low Efficiency Code Plus Exhaust Leak Testing · Comments900.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code NISSAN P0430 Saving Repa...May 18, 2019 ... Diagnosis and replacement of a Catalytic Converter on a 2006 Nissan Altima 2.5L which had a P0420 code (Low Catalytic Efficiency) ...P0420 is a "dying cat" code, and it may be that your recent misfire damaged the catalytic converter. When dealing with it, you need to recognize that low efficiency is one thing, failure of the honeycomb is another. ... Nissan Forums is the go to place to talk about your favorite Nissan model, including the Rogue, Maxima, Altima and even sports ...2056 posts · Joined 2006. #6 · Nov 9, 2009. P0420, replace bank one cat (passenger side, first cat) and the problem will go away. I just had a p0430 last week, took it to the dealer (theyre warrantied for 8 yrs/80K), they replaced the cat …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...P0420: merkitys, syyt, korjaukset. Vikakoodi P0420 tarkoittaa katalysaattorin tehon moottorin puolella 1 olevan alle raja-arvon. Auton katalysaattoria tarvitaan moottorin polttoprosessin aikana syntyvien haitallisten päästöjen hajottamiseen ja näin se on tärkeässä roolissa ajoneuvon päästöjen vähentämisessä.To diagnose the P0420 2006 Nissan Maxima 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.If the sensors were bad, it couldn’t set the P0420. Let’s understand exactly what a P0420 code is. Here’s the definition: P0420 Catalyst System Efficiency Below Threshold (Bank 1). What the code is telling you is that the …Mar 21, 2023 · Nissan Mechanic: Daniel Chaidez. Understood, so P0420 would only be related to that front catalytic converter here and even though this code usually sets when the converter is damaged it can also set when there is an exhaust leak, a faulty oxygen sensor, or an issue with the ignition/fuel system. Check Engine Light and P0420 and P0430 Codes. So, your Check Engine light is on, and you’ve got either a P0420 or P0430 code, on your OBD-II scanner. This “Catalyst system efficiency below threshold” code is triggered when your car’s computer (the powertrain or engine control module (PCM or ECM)) detects a catalytic converter issue. 1A ...A majority of us CF members have the 6 cylinder, 4.0 liter VQ40DE motor in our truck. So our troubleshooting advise may be off a little - the same principle should still apply though. As you probably already know, the Diagnostic Trouble Code, (DTC) P0420 means "Catalytic Converter System, Bank 1 - Efficiency Below Threshold.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 attributed to a malfunctioning catalyst or potentially be a false alarm triggered by a defective O2 sensor.Nissan P0420 Code. On Nissans, trouble code P0420 indicates issues specifically with Bank 1 on the passenger side of the engine. It’s common in the Altima, Sentra, Pathfinder, and Murano models. Exhaust leaks near the converter, faulty oxygen sensors, and bad ignition coils can all cause P0420. Thorough inspections and repairs of …Here are some of the tools that jimthecarguy useshttps://www.amazon.com/shop/jimthecarguyHow to repair a PO420 on a 2006 Nissan Altima with a 2.5 liter engin...Activating the key to your Nissan is a task that can be easily and efficiently completed on your own time at home. All you will need is your Nissan vehicle and the key or keys to b...P0420: merkitys, syyt, korjaukset. Vikakoodi P0420 tarkoittaa katalysaattorin tehon moottorin puolella 1 olevan alle raja-arvon. Auton katalysaattoria tarvitaan moottorin polttoprosessin aikana syntyvien haitallisten päästöjen hajottamiseen ja näin se on tärkeässä roolissa ajoneuvon päästöjen vähentämisessä.P.S side note I have a code P0420 and upon scan it told that its a catalyst system efficiency below threshold ( Bank 1 ) so I hope its the sensor as they said at autozone and not the cat itself P.S.S Another thing.. the check engine light came up.. pretty much right after my fuel light came up.. meaning I was nearly on empty tank..Dec 28, 2010 · The voltage for O2 sensor #2 should fluctuate very little. If sensors #1 and #2 fluctuate at the same rate it can indicate the catalyst in the converter is no good. A totally flat-lined O2 sensor voltage can indicate a failed sensor or problem with wiring. Unfortunately, the P0420 is not a simple code to diagnose. Code P0420. Post by jsando2 » Sun Oct 17, 2021 7:38 pm. Okay! I replaced all my (4) upstream downstream 02 sensors, both catalysts converters, spark plugs, three coil packs all the exhaust is new and Im still getting Code P0420. Also Im getting the code for the fuel sensor but here is where my question comes into place.To diagnose the P0420 2011 Nissan Sentra 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.The most likely cause of a P0420 code depends on your car’s model and age. Use FIXD’s tool to see what the most likely cause of this error code is for your specific car. Other possible causes are: Worn or internally failing catalytic converter (Most Common) Faulty oxygen sensor. Faulty air-fuel sensor.One of the most frequent diagnostic trouble codes (DTCs) that car owners see is P0420. It means that Bank 1’s catalytic converter performance on Bank 1 has been identified by the engine control module (ECM). The catalyst may be at fault for this code, or an O2 sensor may be to blame for a false alert. Understanding the significance of the ...From my experience (12 years as a diag/ drivability tech with different car lines) a p0420 code is almost always a failed cat, I can't think of ...If you own a Nissan vehicle and have come across the Nissan error code P0420, it's essential to understand its significance and how to address it.Jun 19, 2023 ... If a Honda sensor itself is going bad it will code as "A/F Ratio Bank 1". A civic will code "P420" for many reasons including low oil, ...P0420 コード日産は、PCM が触媒コンバーターのバンク 1 の故障を検出したことを意味します。 Nissan P0420 コードを修正するにはどうすればよいですか? P0420コード日産を修正するために従うことができるいくつかの手順は次のとおりです。2056 posts · Joined 2006. #6 · Nov 9, 2009. P0420, replace bank one cat (passenger side, first cat) and the problem will go away. I just had a p0430 last week, took it to the dealer (theyre warrantied for 8 yrs/80K), they replaced the cat free of …The Engine Control Module ( ECM ) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor). A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen … See more
Here’s a good P0420 diagnostic order for the Nissan Patrol: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Patrol 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.. Macon bibb county health department macon ga
Good morning, Quartz readers! Good morning, Quartz readers! Members of the Renault-Nissan-Mitsubishi alliance meet in Amsterdam. Leaders from the three carmakers will gather for th...Good morning, Quartz readers! Good morning, Quartz readers! Members of the Renault-Nissan-Mitsubishi alliance meet in Amsterdam. Leaders from the three carmakers will gather for th...What is the Cost to Diagnose the Code P0420 2009 Nissan Sentra? Labor: 1.0. The cost to diagnose the P0420 2009 Nissan Sentra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and ...May 22, 2023 ... Seguro de Auto Barato: https://www.youtube.com/watch?v=jha7mvd7mtA En esta video te diremos el significado del código P0420 en el tablero de ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code NISSAN P0430 Saving Repa...OBD II fault code P0420 is a generic code that is defined as “Catalyst System Efficiency Below Threshold (Bank 1)”, and is set when the PCM (Powertrain Control …The most common fix for P0420 in the Nissan Titan is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Titan 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 Nissan Titan: 1. Check for Other Codes.Common problem starting after 75K. Ultimately, you’ll probably need to do all 4 but I’d do it piecemeal. The post Cat ones are a cake walk, the pre Cat ones are not fun at all. Usual failure code is “Heated O2 Sensor”. O2 Sensors. Bank 1 = 1 Passenger. Bank 2 = 2 Driver. Sensor 1 = 1 Before Catalytic.In this blog post, we'll delve into the P0420 code, explore what it means, and discuss its significance for various car makes, including Honda, Ford, Chevy, and Nissan. Understanding the P0420 Code The P0420 code is a generic OBD-II (On-Board Diagnostics) code that is uniform across various car manufacturers.To diagnose the P0420 2006 Nissan Maxima 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.Feb 1, 2014 · Fact is a p0420 is a clogged/ failed precat. And you can't get the code cleared until its been replaced. You might be looking at a new o2 sensor just because it might strip out when you try and remove it with 100k on it. Google 03 Altima 2.5 p0420. 287 posts · Joined 2008. #5 · Dec 10, 2014. the code it throws is the code I put in the title p0420,the truck has been up rev tuned for the whole time, when I installed the exhaust I had it uprev tuned. keith ps the truck has been tuned for25,000 miles. IRCVK56 ORL. 04 KC WHITE 2WD.Nissan Mechanic: Daniel Chaidez. Understood, so P0420 would only be related to that front catalytic converter here and even though this code usually sets when the converter is damaged it can also set when there is an exhaust leak, a faulty oxygen sensor, or an issue with the ignition/fuel system.Causes. Diagnosis. Nissan Altima P0420 Quick Info Table. Nissan Altima 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.To diagnose the P0420 2007 Nissan Pathfinder 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.What is the Cost to Diagnose the Code P0420 2006 Nissan Murano? Labor: 1.0. To diagnose the P0420 2006 Nissan Murano 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.5 posts · Joined 2023. #1 ·May 10, 2023. I have a 2010 Nissan Frontier crew cab V6 4.0L. Recently the check engine light came on. The code states P0420 indicating the passenger side catalytic converter has failed. I tried Cataclean and it made the code go away for about a tank of gas. Not much longer..