Dec 5, 2023 · P0420, P0302 codes. My son has a 07 versa S. It's had a CEL since we bought. P0420 catalyst code Bank 1, then misfire codes cylinder 2 and 4. We have replaced the cat convertor, I've cleaned the pcv valve, and MAF along with throttle body. And have checked and tested the o2 sensor (seemed fine, have not replaced yet), along with plugs and ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code NISSAN P2096 Saving Repa...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 ...A logged P0463 code means that a high voltage signal is detected from the fuel level sensor, resulting in inaccurate fuel gauge readings. A faulty fuel level sensor circuit or sending unit, damaged body computer, PCM issues, and a faulty smart fuse box are common reasons why this code is triggered. Aside from inaccurate fuel level readings, a ...bswift79 Discussion starter. 15 posts · Joined 2020. #1 · Dec 13, 2020. Hello, first post, great info on here. I have a 2016 Versa Note with a P0300 code and running horrible. I replaced plugs, crank sensor, battery, made sure it had good fuel, replaced the intake gaskets, couldn't find any vacuum leaks, compression is good.2012 nissan versa 1.6. Vehicle has obd code p0420. I checked the temperature of the cats which read 240 degrees before the first converter and 440 degrees on the exit side. On the second converter it … read moreHere’s a good P0420 diagnostic order for the Nissan Pathfinder: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Pathfinder 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.P0401: Faulty EGR (Exhaust Gas Recirculation) valve. P0455, P0446, P0442, P0440, or P0411: Problem with the evaporative system. P0305 or P0300: Engine misfires. P0175 or P0171: Faulty oxygen sensor. While these are the most common codes that the 7E8 engine code menu shows, they aren't the only ones that the menu can have.Learn what causes the P0420 Nissan code, how to fix it, and how much it costs. Find factory service manuals and bulletins for specific Nissan models with this code.Aug 6, 2020 · 2012 Nissan Versa P0420 Engine Code and Exhaust Leak Due to Motor Mounts and Flange Gasket Replacement.Checked it again and its a P0430 bank 2 catalytic efficiency below threshold code. So I thought it might clear itself but it has not so far after several hundred miles. I did end up driving probably 5-600 miles while trying to figure out the P0174 code. Since the sensor was giving the ECM the wrong information, the ECM was adjusting the fueling ...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 ...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 else.The P1778 code defined as "Transmission Reverse I/P1778 Circuit Malfunction" is only applicable to certain types of Nissan vehicles. It's an extremely narrow range of vehicles, and even in ...February 14, 2023 by Jason. P0455 in the Nissan Versa is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your Versa. But, whenever the check …Most times it points to a bad converter, leaking exhaust (such as from a cracked manifold), or that combustion isn't happening correctly (intake air leak, goofy fuel injector, or spark plug issues). The combustion issue usually comes with other codes as well. Re: P0420 - Service Engine Soon.In conclusion, the P0420 code, indicating low catalyst system efficiency, is a common concern for drivers of various car makes. Whether you drive a Honda, Ford, Chevy, Nissan, or any other vehicle, understanding the potential causes and taking prompt action can help maintain your car's performance and reduce harmful emissions, contributing to a ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code NISSAN P0138 Saving Repair...P0420 Nissan - VERSA 2007. asked Apr 21, 2017 by DON. nissan; versa; p0420; 0 votes. 1 answer 348 views. How can't I fix my 2014 Nissan versa note vs code p2135. asked May 3, 2018 by Valdez Patricio (101 points) code; p2135; 0 votes. 1 answer 174 views. 1996 ford mustang. asked Aug 3, 2018 by Mike. p0420; cel +2 votes.Brankowski Diagnóstico e Reparo AutomotivoPorto Alegre - RSTelefone/Whats: 51 984 575 335E-mail: [email protected] do canal:https://www.yout...That would be bank 2, the left side of the engine. P0420: Inefficient cat flow on bank 1 .. or something. Dealer is 2 hours away, boo. I'm out of warranty, except for exhaust warranty... I don't think o2 sensors are covered though, which very well could be an issue.. maybe the PRE sensor is bad. See more. 2007 Avalanche White Xterra OR 4x4. Share.This video cover a 2014 Nissan Versa Note model but it is similar among many more. Common error codes you may see on your OBD2 reader are P0420. Pick up a new sensor here:...Find out the exact meaning of the fault code p0420, its possible causes, and tips for eliminating it – all for free. Tutorials Life Hacks Shop CarBook Blog ... How to change fuel filter NISSAN X-TRAIL T30 TUTORIAL | AUTODOC 124K …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.CEL/SES light read the P0720 code as well as P0420(bank 1) & P0430(bank 2) ... going with the nissan oem. what can I do about the P0420? Top. audtatious Moderator Posts: 37008 Joined: Sun Oct 27, 2002 5:31 pm ... Versa Forum Versa General Chat Versa Technical Discussions Murano Forum ...Labor: 1.0. To diagnose the P1217 Nissan 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 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’s exhaust or fuel systems. It can sometimes be tricky to diagnose. The catalytic converter is a component of the vehicle’s exhaust system.The most common cause of the P0420 engine code is a degraded catalyst. Catalytic converters/catalysts break down over time and can also become clogged. Cylinder misfires will significantly reduce ...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 else.Re: P0420: Three Days After Fixing P0300. Post by far raf » Tue Sep 04, 2018 6:59 am. It's about time you got this code, this means your rear pre-cat kicked the bucket. I have this code too, did a conditional pass this year and will have to worry about that before the next year inspection. The rear pre-cat on VQ overheats all its lifetime and ...Catalytic Converter. A clogged catalytic converter is a common cause of P2096. A converter that is really bad will glow red and your Versa will have a hard time accelerating. The reason that this happens is that it’s so clogged that it can no longer pass exhaust gas freely. If this is the case, you’ll likely get P0420.OBDII Code P0420 - Catalyst System Efficiency Below Threshold Bank 1 | Nissanhelp.com. Bank 1 refers to cylinder 1. So locate where cyl. 1 side exhaust that leads to your Cat. OBDII Code P0430 - Catalyst System Efficiency Below Threshold Bank 2 | Nissanhelp.com. Bank 2 refers to Cyl. 2 opposite side of Cyl. 1.Hi, I have a Nissan Pathfinder 2006 R51 V6 Petrol. The engine light keeps coming on with P1283 (Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 2) & P0420 (Catalyst System Efficiency Below Threshold (Bank 1) codes. I have just replaced the rear catalytic converters on both banks and the mechanic told me the front converters looked clear.Apr 30, 2021 · Engine Code NISSAN P0420: Catalyst System Efficiency Below Threshold (Bank 1). It indicates that the Catalytic Converter is not functioning efficiently, so the vehicle is increasing the output...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.Veja como diagnosticar o catalisador com scanner ou multímetro e evitar trocar sonda lambda sem necessidade. Cuidado com o código P0420.Code P0430 Nissan Description. 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.Jun 9, 2021 · The MAF sensor if it's not from the dealer, then it's aftermarket. Aftermarket MAF sensors never work right. So that can play a factor as well. The P0420 code is a Catt Converter code. You get this code when the 02 Sensors are working and the Catt converter is not. You would need to replace the Catt Converter to resolve that code.Subscribed. 1.4K. 246K views 1 year ago #P0420. 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...To diagnose the B1049 Nissan 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.Post by Rogue One » Mon Jan 25, 2016 9:56 pm. P0420 NISSAN ROGUE - Catalyst System Efficiency Below Threshold Bank 1. Tech notes. 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 ...Nov 21, 2023 · OBD II fault code P0420 is a generic code that is defined as ““Catalytic Converter System Bank 1, Efficiency below Threshold”, 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 “Bank 1” refers to the exhaust system ...Sep 12, 2015 · Post by Rogue One » Mon Jan 25, 2016 9:56 pm. P0420 NISSAN ROGUE - Catalyst System Efficiency Below Threshold Bank 1. Tech notes. 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 ...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 ...Re: P0420, P1283 and P0011 2004 SE. Post by VStar650CL » Thu Sep 09, 2021 4:39 pm. P0420 by itself virtually always means a dead catalytic converter, but yours isn't by itself. The P0011 is most likely a crapped camshaft sensor on the same bank (bank 1, rear) and may be causing funky IVT behavior and correspondingly funky readings downstream.p0420 Catalyst Efficiency Below Threshold (Bank 1) Post by gavnator » Tue Sep 27, 2022 1:10 pm. Does anyone know if this code is actually related to the catalytic …Code P0302 Nissan Description. When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring.The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module monitors the crankshaft speed and has detected that engine cylinder #2 is ...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.Re: p0420 Catalyst Efficiency Below Threshold (Bank 1) Post by VStar650CL » Tue Sep 27, 2022 2:17 pm. When occurring by themselves, P0420/P0430 are strictly "dead cat" codes which won't be caused by a bad sensor. The only other thing that can cause them is an exhaust leak in the vicinity of the rear sensor, but we see that very …Here's how to modify your car's oxygen sensor to get rid of a P0420 OBDII code, clear the check engine light and pass an emissions test.The P0420 code is thr...Many traction control systems will illuminate the warning light when the system detects a loss of traction, like in snowy or rainy weather condition. Typically the light is seen when the system steps in to preserve traction. It's a good idea to read the section in your car owners manual to familiarize yourself with how your traction or stability.Code P0300 Nissan Description. When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring.The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module monitors the …Aug 6, 2020 · 2012 Nissan Versa P0420 Engine Code and Exhaust Leak Due to Motor Mounts and Flange Gasket Replacement.Entendiendo el Código P0420 en Vehículos Nissan: Causas y Soluciones. El código P0420 es un código de diagnóstico general que puede aparecer en varios modelos de vehículos, incluyendo los de la marca Nissan. Este código es una indicación de que hay un problema con el sistema de control de emisiones de tu vehículo, específicamente con el catalizador.Welcome back! /r/Nissan is a forum for all things Nissan/Infiniti! Hakosukas through Jukes. Questions, pictures, articles, build threads, track videos, we will eat it up.2016 Versa. P0420 isn't an 02 sensor code it's a catalyst inefficiency code. I have heard of on rare occasions it being related to a bad downstream 02 sensor but as Ecate said it's usually the catalytic converter needs to be replaced.Here’s a good P0420 diagnostic order for the Nissan Altima: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Altima 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 car. Misfire Codes.Mar 21, 2024 · 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 ...NISSAN; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING APPLIED VEHICLES: All model year 2008 and newer Nissan vehicles except LEAF and Titan XD with V8 diesel engine IF YOU CONFIRM The MIL is ON in an APPLIED VEHICLE with DTC P0456 (EVAP VERY SML LEAK) AND DTC P0456 is not caused by a loose fuel fill cap (refer to NTB13-097).The 2020 Nissan Versa is offered in three trim levels: S, SV and SR. All trim levels come with a 1.6-liter four-cylinder engine (122 horsepower and 114 lb-ft of torque) and front-wheel drive.AceCombat. 989 posts · Joined 2006. #8 · Mar 5, 2010. No the p0420 code is for the catalyst control being below threshold. In other words temp not hot enough cat is screwed possible engine damage to follow very soon get it fixed. 2 dollar part wil lnot fix this problem just because the little light went out doesn't mean that engine damage has ...Significado Código P0420: Eficiencia del catalizador 1 por debajo del umbral. Codigo P0420, Codigo P0101, Transmisión vibra en deplazamiento. Solucionado. Nissan Versa 2012 250000 kms. Luz de check engine Transmisión Código P0101 Código P0420 Vibra. Buenas Tardes, Mi NISSAN VERSA 2012 presenta check engine encendida y arroja los codigos ...Still having issues? Ask a certified mechanic online here: https://trk.justanswer.com/aff_c?offer_id=2&aff_id=8172&url_id=10How To Fix Cylinder Misfire on 20...How to diagnose code P0420 on a Nissan. Typically, you'll find out about P0420 because your malfunction indicator lamp or "check engine light" turned on & you or a mechanic diagnosed the problem with an OBD II code scanner like this one from Bluedriver. You may experience a very slight reduction in engine power from reduced exhaust flow, as well.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 ...P0420, P0302 codes. My son has a 07 versa S. It's had a CEL since we bought. P0420 catalyst code Bank 1, then misfire codes cylinder 2 and 4. We have replaced the cat convertor, I've cleaned the pcv valve, and MAF along with throttle body. And have checked and tested the o2 sensor (seemed fine, have not replaced yet), along with plugs and ...Posted by u/MarleausMom - 1 vote and no commentsIf you’re a car owner, there’s a good chance that at some point you’ve encountered the dreaded check engine light. Code P0420 is a generic diagnostic trouble code that indicates an...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...The Post Oxygen sensor is placed to monitor the efficiency of this cat. Each exhaust manifold is considered a bank. Bank 1 and Bank 2. 4 cyclinders contain one bank. On each bank is usually 2 oxygen sensors, the first being the furthest to the block. P0420 refers to bank 1 sensor 2 (downstream sensor). There are certain measurements that the ...Re: p0420 Catalyst Efficiency Below Threshold (Bank 1) Post by VStar650CL » Tue Sep 27, 2022 2:17 pm. When occurring by themselves, P0420/P0430 are strictly "dead cat" codes which won't be caused by a bad sensor. The only other thing that can cause them is an exhaust leak in the vicinity of the rear sensor, but we see that very …Here are the most common causes of P0420 in the Nissan Versa: 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 code) Engine not heating up enoughThe service engine soon light came on, the computer listed code P0420 which says that the catalyst system efficiency for bank 1 is below threshold for the current engine operating conditions. In the meatime, I checked the air filter which was very dirty, as soon as I replaced it the engine performance improved right away.2012 nissan versa 1.6. Vehicle has obd code p0420. I checked the temperature of the cats which read 240 degrees before the first converter and 440 degrees on the exit side. On the second converter it … read morePost by Rogue One » Mon Jan 25, 2016 9:56 pm. P0420 NISSAN ROGUE - Catalyst System Efficiency Below Threshold Bank 1. Tech notes. 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 ...The P2096 code shows that the post-catalyst fuel trim system is too lean on Bank 1. That simply means that it is getting too much air and not enough fuel to be perfectly balanced. This condition is recognized by the oxygen sensors and the code is generic across most manufacturers. On a four-cylinder or straight-six-cylinder engine, the Bank 1 ...Post by Rogue One » Mon Jan 25, 2016 9:56 pm. P0420 NISSAN ROGUE - Catalyst System Efficiency Below Threshold Bank 1. Tech notes. 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 ...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.2012 nissan versa 1.6. Vehicle has obd code p0420. I checked the temperature of the cats which read 240 degrees before the first converter and 440 degrees on the exit side.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...In conclusion, the P0420 code, indicating low catalyst system efficiency, is a common concern for drivers of various car makes. Whether you drive a Honda, Ford, Chevy, Nissan, or any other vehicle, understanding the potential causes and taking prompt action can help maintain your car's performance and reduce harmful emissions, contributing to a ...To diagnose the P0420 2007 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.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. May or m...To diagnose the P0420 2011 Nissan Rogue 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.PoMan. 534 posts · Joined 2019. #11 · May 29, 2022. @CJK I'd do the sparkplug anti-fouler mod to the downstream O2 sensor bung on your Versa. It might push that sensor out of the exhaust stream enough to keep the catalyst inefficiency code away. It's not a legal or legit fix obviously, but its OK for the DIYer to do.Bank 1 is the back 3 cylinders on the V6 and the only "Bank" on the 4 banger. Bank 2 is the front 3 cylinders on the V6 ... the 4 banger doesn't have a "Bank 2". It refers to the "bank" of cylinders, not the O2 sensor. D. dloudy Discussion starter. 97 posts · Joined 2008. #5 · Apr 2, 2009.For MORE great Auto Repair Videos, visit us at www.OnlineAutoRepairVideos.com Video on how to replace the right front catalytic converter on a 2005 nissan pa...2005-2006 Nissan Versa Air/Fuel Ratio and O2 Sensor Location. Models: 2007 Nissan Versa; 2008 Nissan Versa; 2009 Nissan Versa; 2010 Nissan Versa; 2011 Nissan Versa; 2012 Nissan Versa; Front Sensors 1.6L Engine. 1.8L Engine. Rear Sensor. Nissan Versa DIY Projects: Modifications: Engine & Transmission:P0420 catalyst code Bank 1, then misfire codes cylinder 2 and 4. We have replaced the cat convertor, I've cleaned the pcv valve, and MAF along with throttle body. …2012 Versa 1.8 catalytic converter. My Versa had a misfire a while back. I fixed the misfire and now it has a service engine light and is showing P0420 code. Catalyst system efficiency below threshold bank 1. I think since the misfire it either polluted the converter or an oxygen sensor is bad. How do I tell which it is.Step 5: Fix the wire harness or get a new one: The P1564 code can show up if the wire harness for the ASCD steering switch is exposed or shorted. This can be fixed by fixing or changing the wiring harness. Step 6: Check the fuse: The P1564 code can also be caused by a blown battery.P0420 Nissan - VERSA 2007. asked Apr 21, 2017 by DON. nissan; versa; p0420; 0 votes. 1 answer 348 views. How can't I fix my 2014 Nissan versa note vs code p2135. asked May 3, 2018 by Valdez Patricio (101 points) code; p2135; 0 votes. 1 answer 174 views. 1996 ford mustang. asked Aug 3, 2018 by Mike. p0420; cel +2 votes.Causes and fixes for a Nissan with a P0171 Error Code is “System Too Lea, Migraine and ADHD often occur together. Learn about the possible link between the two conditions. People with ADHD , El código de diagnóstico P0420 en un vehículo Nissan se refiere a , Your Nissan Sentra's service engine soon light is there to let you know that some sort of problem has been d, =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix P0420 ====, Find your TRQ parts here: http://1aau.to/m/ETCG0420Eric the Car Guy is , Code P0420 Description. The Engine Control Module (, =====Claim your FREE engine code eraser 👉 https://free.nonda.co , Here are the most common causes for the P0420 code: Catalytic , The P0420 code signals a low catalyst system efficiency. This code, Need Help with Nissan Versa 2007 Codes P1701 and P04, Replacing your spark plugs will potentially remove the p0300, My daughters 2007 Versa has been showing an intermittent MIL , Your lack of power is probably caused by the honeycomb substrate (co, Notes. As the Nissan P0420 code description implies, 142 posts · Joined 2015. #1 · Jun 1, 2020. I've sha, The downstream oxygen sensor wiring is also volatile since , Re: Code P0420. Post by VStar650CL » Sun Oct 17, .