Code p0420 jeep patriot

Feb 26, 2022 · When these adjustments become too large, the Jeep P0171 code is triggered. Although Code P0171 is not one of the Top 5 most common codes for any of the Jeep models we have data on it is a common code for a lot of cars across all makes. Feel free to check out the other common codes in our Jeep Top 5 DTC codes article. P0171 Causes

Nov 4, 2018 · This trouble code references a number that is given to you when you plug your Patriot into an OBDII scanner. 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 ... Every car manufacturer is obliged to mark all its vehicles in this special format. This online service allows a user to check the validity of the car and get detailed information on almost any VIN, search for Jeep PATRIOT car parts and check the car's history. The VIN also allows a user to get a build sheet of Jeep PATRIOT.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.JEEP CHEROKEE CODE P0420 CATALYTIC CONVER CODE FIX, ENGINE LIGHT ONIf you have Jeep Cherokee and you have Code P0420 and your engine light is on we will expl...The diagnostic trouble code (DTC) P000B stands for “Exhaust “B” Camshaft Position Slow Response (Bank 1).” Your vehicle’s computer will set code P000B when it detects that the actual camshaft position does not match the PCM’s desired camshaft position during phase changes The code description “B” refers to the exhaust camshaft, …The P2015 code refers to the intake manifold runner control (IMRC) system. Most of the time, this is for bank 1, which sits on the same side of the engine as the first cylinder. If your engine is ...

If your OBD-II scanner indicates a code P0457, address the issue with the help of this comprehensive guide. What Does the P0457 Code Mean? Diagnostic trouble code (DTC) P0457 stands for “Evaporative Emission System Leak Detected (Fuel Cap Loose/Off).” The code indicates that your car’s primary computer, which is often referred …Sep 15, 2022 · 2015 2.4L 91k miles. check engine light came on, had it scanned, came back with a p0456. double checked that my gas cap was on and tight, don't see any visible leaks. car runs fine, no issues. couple days later, check engine light is off, still had it checked out by dealership and had them do a smoke test. they pulled same code and say that ... Nov 22, 2016 · P0420 Code. Bought this a month ago, within a couple days CEL came on. I noticed gas mileage was poor and the odd time it would stutter (? or act like it was going to stall) when idling or in drive waiting at a red light. l took it to dealership and said catalytic converter was bad. Went to a few other mechanics just for opinions and they agreed. Note: The Society of Automotive Engineers (SAE) set the generic code P0038.But the code description may vary depending on the vehicle manufacturer. For example, you may find the definition “Heated oxygen sensor (HO2S) 2 Bank 1 – heater voltage high” in some Nissan cars.Feb 21, 2021 · Code P0420:02 Sensor Upstream Replacement:2015 Jeep Patriot Sport FWD 2.0L 4 Cyl.Lubricant:Permatex Dielectric Tune-Up Greasea. Autozone Link - https://www.a...

My 07 Jeep Patriot very very sluggish from park. Have to push acc to the floor for it to move. It can not move from park up a slope. The code I have is p0777. I have changed valve body, oil, filter both in the pan and the cooler, changed TCM all without success. Now I need HELPThe catalytic converter. The catalytic converter breaks down harmful pollutants that are created by your car during the combustion cycle by converting them to less harmful gasses.A defective muffler. Symptoms of code P0420. Here are the most common symptoms of the mechanical and electrical problems related to this DTC: A "rotten egg" smell coming from the exhaust system. High oxygen levels may lead to an increase in sulphur in the fuel system, producing a foul odour. The check engine light comes on.Sep 22, 2014 · J. Jeepn_Creepn Discussion starter · Sep 22, 2014. My engine lights keeps appearing and then dissapearing. Code appeared as. P0420, indicating Catalytic Converter. Could this be a fault with the sensor? Also, when I drive between 60-64km per hour, the car rattles from the rear end and through the seat.

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How to repair P0420 code Catalyst System Efficiency Below Threshold Bank 1. The Engine Control Module (ECM) uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The ... P0420 Jeep Catalyst System Efficiency Bank 1 ...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 …Jeep Wrangler P0420 Code Symptoms. The P0420 code in a Jeep Wrangler will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.1 - 11 of 11 Posts. todde702 · #2 · Dec 11, 2022. The p0420 is catalyst efficiency code, which could be bad 02 sensors but I've rarely seen replacing both fix this code. You could try running one of the cat cleaner bottles through the fuel tank. I've seen a few videos of folks claiming cataclean works well, and folks running a gallon of ...These codes are commonly caused by cracked exhaust manifolds. This is a common problem on the 3.8L engine. Pull the heat shields off the exhaust manifolds an look for cracks. I had both codes on my 2009 and both manifolds were cracked. Pulled the front fenders and the manifolds were easy to get at to replace.Either way, read the code and develop a plan of action to get your vehicle back on the road! Search. Two Bedroom Fifth Wheel - Carcody 2022. 10 Best Competition Subwoofers - Carcody 2022. Best Dashboard Cleaner 2022. RV Queen Mattress - Best of Them 2022. About the author. Cody.

For Jeep vehicles with V6 or V8 diesel engines, such as Wrangler, Patriot, or Grand Cherokee, the P0420 code specifies that catalytic converter efficiency is below the threshold. However, there would be two catalytic converters for some variants of Jeep with dual exhaust systems.Labor: 1.0. To diagnose the P1128 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.Labor: 1.0. To diagnose the P1128 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.How to diagnose code P0420 on a Jeep Patriot. 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 ...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 ...No more cat related codes (P0420/0430) and the only code that keeps popping back up is P2271 Bank 1 Sensor 2 Rich. Finally got my new scan tool. Here are the screens, I have no idea what this data means! DTC: P2271 FUELSYS1: OL-Drive FUELSYS2: OL-Drive Load Pct: 85.1 ECT: 203oF SHRTFT1: 0.0 LONGFT1: 0.0 SHRTFT2: 0.0 LONGFT2: 2.3 MAP (inHg): 24.8No more cat related codes (P0420/0430) and the only code that keeps popping back up is P2271 Bank 1 Sensor 2 Rich. Finally got my new scan tool. Here are the screens, I have no idea what this data means! DTC: P2271 FUELSYS1: OL-Drive FUELSYS2: OL-Drive Load Pct: 85.1 ECT: 203oF SHRTFT1: 0.0 LONGFT1: 0.0 SHRTFT2: 0.0 LONGFT2: 2.3 MAP (inHg): 24.8Both of these components should be tested starting with the fuel cap. Only further inspection will tell since there are no other diagnostic codes to help you narrow in on what the issue really is. For more diagnostic help, contact our service department to schedule an appointment. P0420.p0300, p0315, p0335 - Stalling. A few days ago the Jeep stalled while in a low speed turn and I was pulling misfires and crank sensor codes. Along with the traction control light being lit. I limped home with the engine light flashing and dinging.Take some time to learn more about a P0128 code - you'll thank yourself later. Car Values. Price New/Used; My Car's Value; ... P0420 - Catalyst System Efficiency Below Threshold Bank 1.

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 Location

My 07 Jeep Patriot very very sluggish from park. Have to push acc to the floor for it to move. It can not move from park up a slope. The code I have is p0777. I have changed valve body, oil, filter both in the pan and the cooler, changed TCM all without success. Now I need HELPAndrew Reply Save 1 - 2 of 2 Posts harold · #2 · Jan 10, 2012 acd333 said: Does anyone have any experience with this issue? Are the O2 sensors easy to get at/replace? sorry to sound useless, but some are easy to get to, some are notP1403 Loss Of 5 Volts To EGR Sensor - Read Our Article on Automotive Circuit Testing For Help With This Jeep Check Engine Light Code. P1475 Auxiliary 5 Volt Output Too High. P1476 Too Little Secondary Air. P1477 Too Much Secondary Air. P1478 Battery Temp Sensor Voltage Out Of Limit.Find out how to fix the Jeep P0300 code in this article! 1. Year. 2. Make. 3. Model. 4. Trim. 5. Fuel Type. Check Compatibility. Great news! FIXD is compatible with your vehicle. ... Popular Engine Codes p0420 code p0172 code p00171 code p0128 code p0300 code p0456 code p0430 code p0442 code p0455 code p0113 code.2012 Patriot Engine Light. Check Engine light comes on every other week or so but goes off after a day or two. Got the code P0420 checked at Autozone and was told possible 02 Sensor or Cat convertor. Also here a clicking noise when turning off the car while the light is one. Maybe 5 or 6 clicking sounds.P2173 is a diagnostic trouble code (DTC) for "Throttle Actuator Control System - High Airflow Detected". 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 ...I also Changed spark plugs air filter pvc valve. Ive cleared the codes but codes came back after a day or two. I bought some Cataclean i keep hearing its good stuff for that p0420 code but i have to wait till i get down to quarter tank to pour it in. I guess I will have to check for exhaust leak vacuum leak 02 sensor wiring.You can find common Jeep Patriot fault codes on this page that when clicked take you to a detailed description. ... P0420. Catalyst System Efficiency Below Threshold (Bank 1) Learn More Fixes. 8/10 P0335. Crankshaft Position Sensor A Circuit Malfunction. Learn More Fixes. 9/10 P0300.Save. R. Rory Christel · #3 · Aug 29, 2017. P0456. P0456 is an OBD-II generic code that the engine control module (ECM) has detected a very small leak in the evaporative system during the vehicle off testing. The test has to fail twice in a row to cause the code to be activated by the ECM. P0455.Apr 23, 2023 · For Jeep vehicles with V6 or V8 diesel engines, such as Wrangler, Patriot, or Grand Cherokee, the P0420 code specifies that catalytic converter efficiency is below the threshold. However, there would be two catalytic converters for some variants of Jeep with dual exhaust systems.

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28 maj 2012 ... Just picked up this error code on my Jeep KJ 2005 this morning and the orange light engine light came on. Got this error code - P0420 This ...Sep 22, 2023 · Subaru & Honda. If you find a P0420 code in your Subaru or Honda, it’s most likely the catalytic converter to blame. It can also be caused by an exhaust leak or a bad oxygen sensor. Check for vacuum leaks or other fuel mixture-related engine codes. Check for any exhaust leaks before the catalytic converter. P1403 Loss Of 5 Volts To EGR Sensor - Read Our Article on Automotive Circuit Testing For Help With This Jeep Check Engine Light Code. P1475 Auxiliary 5 Volt Output Too High. P1476 Too Little Secondary Air. P1477 Too Much Secondary Air. P1478 Battery Temp Sensor Voltage Out Of Limit.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...Dec 11, 2022 · 1 - 11 of 11 Posts. todde702 · #2 · Dec 11, 2022. The p0420 is catalyst efficiency code, which could be bad 02 sensors but I've rarely seen replacing both fix this code. You could try running one of the cat cleaner bottles through the fuel tank. I've seen a few videos of folks claiming cataclean works well, and folks running a gallon of ... What Does Jeep Wrangler Code P0420 Mean? Jeep Wrangler P0420 definition: Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and …The P0016 code stands for "Camshaft Position A - Camshaft Position Correlation (Bank 1)", which means your crankshaft and camshaft are not in sync. Some of the common causes of the P0016 code include a damaged timing chain or belt, a faulty camshaft or crankshaft reluctor wheel, and a bad camshaft or crankshaft sensor.To diagnose the U0401 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.Tweet. To check your JK Codes, use this sequence on your ignition. Insert Ignition Key. Turn vehicle On-Off-On-Off-On. Codes will be shown on the Odometer screen. B1402 - Front Left Audio Speaker Output Circuit High. B1403 - Front Left Audio Speaker Output Circuit Open. B1405 - Front Right Audio Speaker Output Circuit Low. ….

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.How to diagnose code P0420 on a Jeep Patriot. 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 …I know from previous experience that Asian cars don't seem to like Bosch sensors (Hondas and Mitsubishis will throw codes) 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.Labor: 1.0. To diagnose the P1128 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.Aug 17, 2023 · An illuminated check engine light is a common symptom of trouble code P000A. How to Diagnose the P000A Code. To restore the optimal performance of your engine, the code P000A must be resolved immediately. Diagnosing it, however, can be tricky as it has many possible triggers. Kiwi Jeeper Discussion starter · Nov 30, 2008. I have had my cat converter and front O2 sensors replaced last year (about 12 months ago). Since then I have driven about 12k kms. This weekend I got the check engine light and the code that has come up is P0420 (M) - catalyst converter efficiency below threshold.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.Related Codes. P0420 Jeep P0422 Jeep P0423 Jeep P0424 Jeep P0425 Jeep P0426 Jeep P0427 Jeep P0428 Jeep P0429 Jeep ... ,2007 Jeep Wrangler Unlimited,2007 Jeep Wrangler Rubicon,2007 Jeep Trailhawk Concept,2007 Jeep Patriot UK Version,2007 Jeep Patriot,2007 Jeep Grand Cherokee UK Version,2007 Jeep Grand Cherokee SRT-8 UK Version,2007 Jeep Compass ...93667 Views 21 Replies 13 Participants Last post by jtec , Jan 25, 2022. cajuntec Discussion starter · May 11, 2009. In the ongoing Jeep Saga, Code P0430 has showed up again. It goes away for a while, then my wife or I will hit a large bump in the road - and it's back again. I know it's supposed to be for a Oxygen Sensor, but they have all ... Code p0420 jeep patriot, Dec 21, 2021 · How to check for a bad catalytic converter in Jeep Patriot? Reading out the fault codes using a diagnostic device is relatively reliable. If you see any fault code from P0420 to P0424 or from P0430 to P0434 in the OBD2 scanner, it indicates a problem with the catalytic converter. , 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 ..., What Does Jeep Code P0420 Mean? Jeep P0420 definition: Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage., Code P0420 indicates that the catalytic converter is not functioning efficiently, therefore increasing the output of harmful pollutants by the vehicle. How To ..., Sep 4, 2022 · 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. , 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., P0777 & P0730 - I ran all my usual tests on jatco vehicles with these codes. Definitely has major internal damage. Fluid was the first hint, then after pulling the pan it was a sparkle princess puke fest. I've rebuilt quite a few of these at this point. I'm aware of the stepper motor, valve, chain/belt, pulley issues that plague the jatco line., The average charcoal canister replacement cost is between $130 and $300, depending on the car model. A charcoal vapor canister costs $80 to $150. The labor costs $50 to $150. The chances of replacing your fuel canister are very slim, but it does definitely happen if you have a high-mileage car., Be prepared with the most accurate 10-day forecast for Novo Progresso, Pará, Brazil with highs, lows, chance of precipitation from The Weather Channel and Weather.com, Subaru Check Engine Light Part 2. One of the more common codes we see on the Subaru, is P0420 Catalytic Converter Efficiency Below Threshold. I am taking a more technical approach than normal to describing what happens when the code is set, as it is a very technical process that needs to occur to get real results, we don't always replace ..., If your car is showing the P0420 engine code, you're dealing with a problem with your catalytic converter. Services. ... Jeep Cherokee. Jeep Wrangler. Kia Forte. Mazda 3. Nissan Altima. Subaru Outback. Subaru Crosstrek. Toyota Camry. Toyota Corolla. Toyota Tacoma. Toyota Highlander. Toyota Rav4., 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., 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 scanner ..., The P0480 code stands for a faulty cooling fan (1). On the other hand, P0481 shows up when cooling fan 2 gets damaged or broken. That’s why people often confuse …, "The P2112 code will show up when the powertrain control module detects the throttle body plate is either lower than the expected angle or is stuck in the closed position. Common causes of the P2112 code include throttle body assembly or motor failure, wiring issues, a bad throttle actuator motor, or a malfunctioning PCM., 2000 Camaro - P0137 O2 Sensor Circuit Low Voltage (Bank1,S2) I have a 2000 Camaro V6 3.8L and it originally had the trouble code: P0420 Catalyst System Efficiency Below Threshold (Bank 1) So I got the catalytic converter replaced at a Magnaflow dealer the other day with a universal converter. I noticed that the converter they installed was a ..., DavidAaa · #11 · Jan 18, 2020. The P0456 code (very small EVAP leak) was caused by the EVAP purge valve on my 2015 JGC Overland, $20 part (P/N CP796). After replacing the leak sensor and o-ring like the web suggested it did not fix the issue. Smoke test also did not show any issue., P0420 JEEP - Catalyst System Efficiency Bank 1 13 | Agregar comentario Posibles causas Convertidor de catalizador de tres vías Banco 1 Tubo de escape Fugas de aire de admisión Los inyectores de combustible pueden estar defectuosos Fuga de inyector de combustible Las bujías pueden estar defectuosas Tiempo de encendido incorrecto Módulo de ..., Mar 13, 2023 · NOTE: Take note that while the cods listed below are not strictly related to P0420 – “ Catalyst System Efficiency Below Threshold (Bank 1)”, these codes often appear with P0420. P0421 – “Warm Up Catalyst Efficiency Below Threshold (Bank 1)”. P0422 – “Main Catalyst Efficiency Below Threshold (Bank 1)”. P0423 – “Heated ... , Experience Jeep Forum on the new Fora Communities app for iOS & Android! Get the best of Jeep Forum on our official app. Code P0420. Jump to Latest Follow 13442 Views 5 Replies 3 Participants Last post by kc2mrg, May 31, 2012. S. speedyjeep Discussion starter · May 30, 2012. Add to quote; Share Only show this user. My check engine light came ..., Dec 23, 2017 · Q: 2014 jeep patriot reading code u 0401. Jeep wont accelerate when given gas. Traction control light blinks and lightning bolt light. Jeep shakes bad. Then will not accelerate when given gas. It sputters worst. The reaction control light and lightning bolt blinks and engine light comes on. U0401 code comes up 3 times in test. , P0452 is a generic OBD II code that can occur in the Jeep Cherokee. It means that your Cherokee's EVAP system has detected low fuel tank pressure. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off. When the pressure in the system is too low, P0452 is generated., P0420 & P0430. So here's the jist of what's going on. I just bought the wk used about a month and a half ago and P03400 soon came up. I took it to my mechanic and we did a motor flush but I think that managed to clog the cats, the good news is the P03400 code has not come back., JEEP COMPASS RENEGADE CODE P0420 CATALYST EFFICIENCYIf you Jeep Compass or Renegade and you have engine light on and code P0420 we will show what usually cau..., 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. P0571 means there is a problem with the switch that that deactivates the cruise control system which causes the cruise control to not function., Jeep Patriot P0455 EVAP Leak Replacing the Canister Purge SolenoidP0455: Large EVAP leak detected.P0172: Bank 1 system too rich.Purge Solenoidhttps://amzn.to..., Code P0420 Jeep Description The Engine Control Module ( ECM ) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and …, 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 ..., My jeep patriot was throwing a p0420 code and the cat was replace 8 months ago with a oem one replaced both the B1 S1 and B1 S2 sensors ..., My girl bought a used car recently and she had two codes p0420 and p0139. I guess the guy that had it probably cleared the codes before selling it to her i... in this thread in this sub-forum in the entire site. Advanced Search ... 2008 jeep Patriot p0420 and p0139. Jump to Latest Follow, The "Italian Tune-Up" The "Italian Tune-Up" is a common fix for a range of automotive problems, including a clogged catalytic converter. Many drivers simply don’t push their vehicles hard enough to heat the catalytic converter to its most-efficient temperature—between 800 °F (426 °C) and 1,832 °F (1,000 °C)—leading to premature …, It actually took about 950 miles for it to throw the 420 code. We turned off the 420/430 codes at about 975 miles and it is at almost 2000 without any new codes. We have used those Green Cats on some GM vehicles without having to turn off any codes, the most recent being a 2016 Z06 Corvette., I need to know the color code (found on the sticker inside driver's side door) for 2002 Jeep Grand Cherokee in Patriot Blue. Sticker on my vehicle is missing. Code should be 3-4 digits.