P0420 jeep patriot

In this video I show you how to remove the manifold on a Jeep Patriot with a 2.4L engine. This manifold has a catalytic converter built in it, hence sometime...

I have a decent OBD scanner (in the $100 range) that was giving the code (P0480 - COOLING FAN 1 CONTROL CIRCUIT). Looked at the service manual for this code and did some trouble shooting. Mostly checking connections, checking fuses, relays, etc. The service manual has you check for shorted wires and relays.Vídeo explicativo sobre el CÓDIGO DE FALLA P0420. Descubre qué significa, por qué ocurre y cómo solucionarlo correctamente.LEER SOLUCIÓN DEL CÓDIGO OBD2 EN...I recently purchased a used 2008 Jeep Patriot. The vehicle has a loud, airy hiss when you hit the gas and has started giving a code P0420. I think the vehicle has a vacuum leak or air intake leak. Cou … read moreJeep Patriot 2009 184000 kms. Luz de check engine Código P0420. A que se debe este codigo p0420 a que se refiere y se prende el check engine. Por favor ayuda ayuda Mi jeep es del 2009. Augusto de Chile hace 5 años . AU. ... P0420 JEEP - Catalyst System Efficiency Bank 1 17 Comentarios | Agregar comentario Posibles causas Convertidor de ...2007 jeep liberty code P0420 - Jeep Cars & Trucks question. Search Fixya. Browse Categories Answer Questions . Jeep Car and Truck; Cars & Trucks; All Recent; Join; Sign In; Ask a Question ... 2011-Patriot-OM-5th (1).pdf.... 2007 Jeep Patriot... PDF Manual 2005-2010 Jeep Grand Cherokee - Owners...When a code P219A is stored, it means that the powertrain control module (PCM) has detected an air to fuel ratio imbalance for the bank of the engine which contains the number one cylinder. In order to monitor the air to fuel ratio for each engine bank, the PCM uses data input from heated exhaust oxygen sensors (sometimes called air fuel sensors).

If none of that clears the codes, which I doubt they will, your cats are bad. P0420 and P0430 are pretty cut and dry that the cats are bad. The downstream O2 sensors will not detect HC in the exhaust if the cats are functioning appropriately. The real issue is to figure out why the cats are bad.When a code P219A is stored, it means that the powertrain control module (PCM) has detected an air to fuel ratio imbalance for the bank of the engine which contains the number one cylinder. In order to monitor the air to fuel ratio for each engine bank, the PCM uses data input from heated exhaust oxygen sensors (sometimes called air fuel sensors).We have a 2005 Chrysler Town & Country 3.8 with a P0420 Catalyst System Efficiency Below Threshold (Bank 1). Join us as we diagnose this code as being a fau...To diagnose the P0700 Jeep 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.Cheap Car Switches & Relays, Buy Quality Automobiles & Motorcycles Directly from China Suppliers:NEW Power Window Master Switch for Jeep Compass Patriot Dodge Avenger Caliber Magnum 04602780AA Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return.Brad. Ask Your Own Jeep Question. 1. yes it set the code P2008. 2. (Z909) GROUND CIRCUIT OPEN OR HIGH RESISTANCE: yes it illuminated the test light so it pass the test and continue with next step. 3. (K601) MFV CONTROL CIRCUIT SHORTED TO VOLTAGE: There was no voltage present so I continue to next step. 4.

also with a multimeter check feed at fan connection to see if rad fan is getting power, details on p0480. Possible causes. - Faulty fan control relay. - Fan control relay harness is open or shorted. - Fan control relay circuit poor electrical connection. - Faulty cooling fan 1. - Fan cooling fan harness is open or shorted.The catalitic converter plugged up an as i was taking it to get new converter i lost transmis an now getting codes p0420 and p0700 trans control system malfunction ... Have 2008 jeep patriot sport check engine light on shop say catalytic converter bank one but he say truck got to have the one with C.A.R.B. approved but I live in MARYLAND and I ...Some of the most commonly reported problems with a Jeep Patriot include water leaks from the front or rear roof, and the engine does not start due to a wireless control module fault. People also commonly report difficulty shifting the manua...This video will show you how to fix a seemingly fine catalytic converters (FOR OFF-ROAD ENVIRONMENTS ONLY) so that your check engine light turns off. The ben...Buy motor & trans mount with free shipping and free return online. Find products of Engine with high quality at AliExpress. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return.

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A P0420 diagnostic trouble code is a "generic" fault code that is set when the Onboard Diagnostic II (OBD II) system sees a drop in converter efficiency. The OBD II system monitors catalyst efficiency by comparing the switching activity of the upstream and downstream oxygen sensors in the exhaust. The upstream O2 sensor in the exhaust …The most common fix for P0420 in the Jeep Renegade is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Renegade 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 Jeep Renegade: 1. Check for Other Codes.P0740 is one of the most common transmission trouble codes. It means that the Cherokee's computer has detected that there is an issue with the torque converter clutch (TCC) solenoid circuit. P0740: Torque Converter Clutch Circuit Malfunction The TCC "locks" the drivetrain, which allows for a true mechanical connection between the transmission.What is the Cost to Diagnose the Code C102A Jeep? Labor: 1.0. The cost to diagnose the C102A Jeep 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.Jeep MK Compass & Patriot Forum P0420. 119 Views 0 Replies 1 Participant Last post ... Only show this user. I own a 15' patriot 4wd latitude , I had the p0420 pop up about a year to 2 years ago , I replaced the 02 sensors and up stream cat , deleted codes and still came back after so many miles driven , I replaced my coils and spark plugs ...Apr 27, 2014 · Since our engine is very similar to ones used in Mitsubishi's I'm reluctant to use a Bosch sensor even though it is the cheapest. Here's what RockAuto lists: BOSCH Part # 15124 $20.79. WALKER PRODUCTS Part # 25024675 $41.99. DENSO Part # 2344881 $49.79. DELPHI Part # ES20354 $51.79. NTK Part # 25186 $63.79. ACDELCO Part # 2133920 #65.79.

What Does the P0420 Code Mean? Diagnostic trouble code (DTC) P0420 stands for "P0420 Catalyst System Efficiency Below Threshold (Bank 1).". It indicates that the exhaust system's oxygen levels are below the required threshold in Bank 1, which can damage the engine's exhaust and fuel system.2016 Jeep Patriot OBD2 Code P0221 Throttle/Pedal Position Sensor/Switch B Circuit. Top Cars; Car Price Calculator; Car Performance Calculator; 0-60 Calculator; ... P0420 Catalyst System Efficiency Below Threshold; P0421 Cataytic Converter Oxygen Sensor Below Threshold;ATSG Blog - The JF011E Jatco CVT to the JF015E CVT-7. The JF011E (as it is called in Dodge and Jeep applications), is a JATCO-made CVT, which is also referred to as the RE0F10A in Nissan and the F1C1A in Mitsubishi (Figure 1). With this transmission having such a presence on the road today, it comes as no surprise that many shops …Hello, I have a 2007 Jeep Patriot. My car currently had the check engine light one and I got it check and it said P0420, which i was told is very expensive to replace. The worker at autozone advised me to try using seafoam first, which I did and nothing happened.An exhaust leak is first on the list for possible causes of p0420: View attachment 97211 Even if it isn't causing the p0420 code, it needs to get fixed since you can smell exhaust in the cabin.Exhaust leak. 1. Faulty Catalytic Converter. A P0420 code will most likely appear if your catalytic converter is malfunctioning. This is the case because the converter is in charge of converting toxic emissions into less harmful gases. As a result, if it's damaged, it might create a slew of problems with your vehicle.It should be a simple diagnosis but obviously this vehicle has other ideas. 2009 Jeep Patriot 2.4. Vehicle came in with a P0300. Bad hesitation under light or full throttle. Instant Misfire counts on #4 (over 100) using a Snap On Verus data PID 'Which Cylinder is Misfiring'. There were also several on misfire counts #3.Para prevenir el código P0420 en tu Jeep Wrangler, hay algunas simples medidas preventivas que debes seguir: Mantener el sistema de escape del vehículo en buenas condiciones. Cambiar el aceite y los filtros de aire y combustible en un intervalo regular. Verificar y limpiar el sistema de entrada de aire frecuentemente.If you're having problems related to the catalytic converter (p0420, etc.) and your vehicle is model year 2011-2016 there may be an open recall that... in this thread in this sub-forum in the entire siteEn este video les mostaremos una solucion al codigo p2015 en la jeep compass

P0008 is the result of a test run by the engine control module to check for misalignment between the camshafts in engine bank one and the crankshaft. The misalignment for this code would be at an idler sprocket in the bank or at the crankshaft. The test checks the positions of the camshafts and compares them against a reference value.

The P0339 code means that the car's computer has detected a problem with the crankshaft position sensor A circuit. In this instance, it has detected a voltage reading that is higher than the maximum set by the manufacturer. Usually, the maximum allowable difference is 10% (between the actual reading and the manufacturer's setting).Patriot. Problemas (2163) Código P0420 (5) Filtros. Preguntar. Problemas de Código P0420. Problemas más específicos: Aparece código p0420 . Ver manual del propietario. Significado Código P0420: Eficiencia del catalizador 1 por debajo del umbral. Problemas destacados. Codigo P0420/Alma Eficiencia del Catalizador (hielera 1) Jeep Patriot ...Forums. Models. Discussion forum for the Jeep MK Compass & Patriot (2007-2017). Based on the Dodge Caliber.Jeep P0300 indicates that two or more cylinders are experiencing misfires. Jeep P0300 Causes. Multiple misfires can be caused by many reasons from a faulty ignition system, fuel system, ... Popular Engine Codes p0420 code p0172 code p00171 code p0128 code p0300 code p0456 code p0430 code p0442 code p0455 code p0113 code.SOURCE: amateur radio installation in 2009 jeep patriot To run any wire through the firewall, find a spot that is both reachable and unobstructed on both sides of the wall. I generally use a very short bit so after penetrating, it does not accidentally plunge into other wiring or components, or I use a collar over the bit (a small piece of tubing, leaving only 1/4" of bit exposed) I sometimes ...Whether you’re in the market for a mid-sized SUV or want to learn more about the Jeep brand, this simple guide will help you gain a basic understanding of the Jeep Grand Cherokee. From Grand Cherokee problems to the model’s history, learnin...P0420 catylist efficiency below threshold. I have had this code P0420 catalyst efficiency for a few years now. Originally code was accompanied by 02 sensor code. Have had only P0420 since. Dealer said new converter needed ($1300), but running fine in mileage & performance. Occasionally code resets itself, but most of time requires a …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0420 Saving Repair Parts:C...

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Your car compares the values of the upstream and downstream O2 sensors. Your P0420 code got set because it noticed variation in the downstream sensor measurements outside of specs. But since it only monitors this for a moment during each drive cycle, it could have been something off that caused the code to get set.What Does the P0420 Code Mean? Diagnostic trouble code (DTC) P0420 stands for “P0420 Catalyst System Efficiency Below Threshold (Bank 1).”. It indicates that the exhaust system’s oxygen levels are below the required threshold in Bank 1, which can damage the engine’s exhaust and fuel system.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...The Waterfront Sunset Restaurant & Beach Bar, Dar es Salaam: See 831 unbiased reviews of The Waterfront Sunset Restaurant & Beach Bar, rated 4 of 5 on Tripadvisor and ranked #13 of 416 restaurants in Dar es Salaam.Diagnosis: Driving with trouble code P0137 is acceptable but only for a short period of time. Driving with this code for an elongated period of time could result in greater engine damage if it is being caused by a lean air/fuel ratio. Common Reason: Code P0137 is often related to a bad O2 Sensor. Oxygen sensor 2 is the downstream oxygen sensor ...also with a multimeter check feed at fan connection to see if rad fan is getting power, details on p0480. Possible causes. - Faulty fan control relay. - Fan control relay harness is open or shorted. - Fan control relay circuit poor electrical connection. - Faulty cooling fan 1. - Fan cooling fan harness is open or shorted.May 31, 2023 · I own a 15’ patriot 4wd latitude , this is my wife’s daily driver we bought it off the dealer 4 years ago aprox, I’ve done maintenance throughout the years , now I had that p0420 code pop out. I’ve had it about for almost 2 years now , and it’s bothering me . Since the key fog has the remote... P0402 is an OBDII trouble code that'll pop up in the Jeep Patriot. It has to do with the emissions system and stands for: P0402: EGR → Excessive Flow Diagnosis The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. ... Related: P0420 Jeep Patriot . Jeep Patriot P0402 ...J. Jeepn_Creepn Discussion starter · Sep 22, 2014. My engine lights keeps appearing and then dissapearing. Code appeared as. P0420, indicating Catalytic …Jeep Patriot 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 vehicle: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System EfficiencyJeep Wrangler P0016 Causes. There are many potential causes of code P0016. Stretched timing chain. Jumped timing. Slipped reluctor ring on the crankshaft. Slipped reluctor ring on bank 1 exhaust camshaft. Faulty timing chain tensioner. Low/dirty oil. P0016 is not one of the top 5 trouble codes for the Jeep Wrangler but, it is still a common one.in my case , 2011 patriot latitude, mil came on , dealership said o2 sensor , light went out after replaced. then back on 30 miles later, they said it was other o2 sensor. code p0420 came back on next day , said cathaletic convertor needed replaced. i doubted their word as less than 40k miles. and noticed they had greased threads on gas tank neck to cause better seal temperaraly. tried a new ... ….

So im pretty sure Juicy’s O2 sensor are ok and her catalytic converter has ceased to fullfill its conversion duties. Could someone look at the obd2 screen shots ive posted and see if you could possible confirm a bad cat based on the info. The downsteam O2 sensor reading is almost identical to...NOTE: 6-Speed Automatic Transmission (Sales Code DA4) for 2015 (MK) Jeep. Patriot, Jeep Compass added to parts section applicability for CEZGU672AA. Catalytic ...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 Module) detects a condition that indicates that the catalytic converter on Bank 1 is operating below the minimum allowable efficiency threshold. Note that on engines with two banks ...aroundincircles · #2 · May 20, 2015. having a code with no CEL is called a "pre code" it means there is something going on, but its not bad enough to throw a code yet. I live in AZ, and each state is different, but I would guess that new jersey, you would have to have the codes cleared completely before it would pass. 1989 Jeep Wagoneer.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix P0420 =====Engine Code P0420 Saving Repair Part...The caveat is that most vehicles set a different code for a large leak, and don't even list a P0440 code. Some will set a P0455 or some other code. One of the vehicles that lists the P0440 is a 2007 Jeep Wrangler. Most other vehicles use another trouble code for this condition.Torque Staff Report. This method is used to retrieve OBD I and OBD II diagnostic trouble codes from your YJ, TJ, XJ, ZJ, and early WJ Jeep models. Insert the key into the ignition. Turn the ignition On-Off-On-Off-On within 5 seconds. Record the 2-digit DTC as displayed by the flashing MIL.Your Jeep Patriot leaves the factory with a catalytic converter. It can run into problems over the normal life of the vehicle, and is often accompanied by OBDII code P0420. Below we'll cover the location, price, and symptoms of a bad torque converter in your Patriot. Menu: Catalytic Converter Price Patriot Catalytic Converter LocationThe Jeep Grand Cherokee is one of the most iconic vehicles on the road today. For decades, it has been a symbol of adventure and freedom, and now it’s getting an all-new makeover for 2023. Here’s what you need to know about the upcoming Jee...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 Liberty. Certainly, anytime the service engine soon light is on, it's good to deal with it ... P0420 jeep patriot, Stock JK Tech - P0456 Code, Small Evap Leak FIXED - So for the past few months I've been battling the dang check engine light coming on even after a reset. Got the 0456 code and found out that it was the emission/ evap system small leak. Most folks, including my mechanic suggested starting at the gas cap. Big..., Code P0420 Jeep 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). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert ..., Shop parking light with fast delivery and free shipping. Perfect replacement for your old or broke parking lights. Find products of Signal Lamp with high quality at AliExpress. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return., etmusic Discussion starter · Jul 25, 2016. Hi guys, Just got a trouble code P0420 and P0133. It point to 02 Sensor circuit slow response, bank 1 sensor 1. Bought 4 replacement sensor and need help with location of the sensor. Is there a diagram available somewhere? Help please., Code P0420 Jeep 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). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert ..., Recommended Services. When the P2004 code is set, it means that the runner flap inside of your Patriot’s intake manifold is not operating correctly. This can be the result of several different things. In most cases, the actuator that is located on the side of the intake manifold will fail and need to be replaced., Labor: 1.0. To diagnose the P000A Jeep 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., jeepmoabhells · #3 · Jan 13, 2015. Red Rock Raider said: 2007 JKU with 70K miles threw the P0420 engine code this morning on the way to work. Thought it might be related to the recent TSB I had completed for the gas fill-up overflow issue but alas it's not. Doing some research and I found some posts that stated the federal emissions warranty ..., That phucker · #2 · Nov 23, 2016 If the spark plugs haven't been replaced lately, I would go ahead and do those, then have the code cleared. If the code comes …, P000A is stored when the actual position of the camshaft differs from the position that the PCM expects during camshaft phase changes. The "A" in code P000A refers to the intake camshaft.The "B," on the other hand, refers to the exhaust camshaft.Bank 1 indicates the side of the engine that contains the #1 cylinder, while bank 2 refers to the opposite bank., 3.17K subscribers 10K 1.8M views 7 years ago 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..., FJNOMO · #3 · Apr 1, 2018. The p0302, specially if it has happened more than once and regularly is typically a sign that it has the infamous head issue. Mine happened at 37k miles, took it in. Dealership kept it for a day and said that it did have the head issue and replaced the head. Mine is a 2014 too., 2014 jeep patriot give a p0420 code from my experience it has been the 02 sensor but I was told the catalytic converter - Answered by a verified Jeep Mechanic ... Have 2008 jeep patriot sport check engine light on shop say catalytic converter bank one but he say truck got to have the one with C.A.R.B. approved but I live in MARYLAND and I can't ..., Srideraio Discussion starter · Aug 26, 2019. My 2010 Jeep Patriot Sport 2.4l 4WD has had a P0420 for a while and only recently started having performance issues. The RPMs increase 2-300 even when the gas pedal is not being pushed. Also, when you release the gas the RPMs are slow to drop. Anyway, I replaced the downstream O2 sensor and …, P0420 Catalytic converter efficiency bank one. Jump to Latest Follow 5661 Views 7 Replies 3 Participants Last post by cprems, Dec 13, 2019. ... Join our community to discuss the Jeep Patriot & Jeep Compass. Find answers to all your Jeep Patriot technical questions. Full Forum Listing., PRICE AS TESTED: $27,985 (base price: $20,690) ENGINE TYPE: DOHC 16-valve inline-4, aluminum block and head, direct fuel injection. Displacement: 144 cu in, 2360 cc. Power: 172 hp @ 6000 rpm ..., On my way down to Florida with my family in our '14 Patriot and the check engine light comes on. Pull over and check codes and its the O2 sensor…, That P0420 codes is one of the most unambiguous of all the diagnostic trouble codes. That code is thrown when the upstream and downstream O2 sensors both have the same "switching frequency." That means that the cat is doing very little to change the exhaust gas composition. In other words, the cat needs to be replaced., The P0420 Code indicates that your car’s computer has discovered an issue with the Bank 1 catalytic converter. ... Is Your Jeep Patriot Equipped with Freedom 1 or 11? September 23, 2023; Unveiling the Mystery: Locating the Vacuum Line on a 2006 Jeep Liberty September 22, 2023;, A P0420 diagnostic trouble code is a "generic" fault code that is set when the Onboard Diagnostic II (OBD II) system sees a drop in converter efficiency. The OBD II system monitors catalyst efficiency by comparing the switching activity of the upstream and downstream oxygen sensors in the exhaust. The upstream O2 sensor in the exhaust manifold ..., To diagnose the P0700 Jeep 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., This page is meant to help you troubleshoot the Jeep Grand Cherokee P0420 trouble code. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420., P0402 is an OBDII trouble code that'll pop up in the Jeep Liberty. It has to do with the emissions system and stands for: P0402: EGR → Excessive Flow Diagnosis The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. ... Related: P0420 Jeep Liberty . Jeep Liberty P0402 ..., How to replace an intake manifold runner control valve, and check a few things on a Patriot. Also called an Intake flow control valve. Don't know why they ca..., Cost of diagnosing the P0420 code. 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 ..., Te suministramos todo lo que necesitas saber sobre el código DTC P0420: ️ Descripción, ️ causas, ️ síntomas y ️ posibles soluciones.LEER SOLUCIÓN DEL CÓD..., What Does P0420 Jeep DTC Code Mean? The P420 is a diagnostic trouble code for OBD-II-enabled vehicles. For Jeep vehicles with V6 or V8 diesel …, P0420 Catalytic converter efficiency bank one. Jump to Latest Follow. 5661 Views 7 Replies 3 Participants Last post by cprems , Dec 12, 2019. cprems Discussion starter · Dec 8, 2019. 2012 Jeep Patriot latitude 4x4 2.4L. So I was doing some research on this code and came across a recall for 2012-2017 Patriots. https://www.cars., SOURCE: amateur radio installation in 2009 jeep patriot To run any wire through the firewall, find a spot that is both reachable and unobstructed on both sides of the wall. I generally use a very short bit so after penetrating, it does not accidentally plunge into other wiring or components, or I use a collar over the bit (a small piece of tubing, leaving only 1/4" of bit exposed) I sometimes ..., The P0420 code is a very popular one and that's why there's a site dedicated to that specific trouble code. If your car's check engine light is on, get that code read in case it's a P0420. A P0420 code is a trouble code on OBD-II equipped vehicles. All vehicles from 1996-newer sold in North America support this generic powertrain code., P0420 - Catalyst System Efficiency Below Threshold Bank 1. P0441 - EVAP System Incorrect Purge Flow. P0446 - EVAP System Vent Control Circuit. P0455 - EVAP System Leak Detected - Large Leak., Jeep Patriot P0455 EVAP Leak Replacing the Canister Purge SolenoidP0455: Large EVAP leak detected.P0172: Bank 1 system too rich.Purge Solenoidhttps://amzn.to..., 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 ...