P0420 hyundai tucson

P0420 Diagnostic Theory for Shops and Technicians 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 ... Traveling to and from the airport can often be a stressful experience, with the hassle of finding parking and navigating through traffic. However, there is a convenient and reliabl...The 2021 Hyundai Tucson is a small SUV sold in six trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The SE and the Value come standard with a 2.0-liter four-cylinder engine (161 ...Are you looking for an escape from the hustle and bustle of everyday life? A casita rental in Tucson, AZ may be just what you need. Casitas are small, self-contained homes that off...Veracruz Check Engine light for Catalytic Converter - P0420. I've been getting periodic P0420 Check Engine codes on Bank 1. Upon some research, many are of the opinion that this 1 (of the 3) catalytic converters going bad. Has anyone else here experienced this and what have you done?The price of the 2020 Hyundai Tucson starts at $24,690 and goes up to $33,040 depending on the trim and options. SE. Value. SEL. Sport. Limited. Ultimate. 0 $10k $20k $30k $40k $50k. We'd stick ...Nov 13, 2018 · This page is meant to help you troubleshoot the Hyundai Tucson 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. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of Contents The 2022 Tucson carries a $25,350 starting price, which is slightly lower than average for a compact SUV . The midrange SEL and N Line trims cost $26,500 and $30,600, respectively. The price climbs to $34,700 for the range-topping Limited trim. P0420 Hyundai 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. As oxygen ... Plus: Elon Musk’s extremely busy week Good morning, Quartz readers! US state attorneys called for a recall of Kia and Hyundai cars. The vehicles are apparently too easy to steal. L...When it comes to innovative technology features, Tucson Hyundai is a brand that stands out from the competition. With cutting-edge advancements and state-of-the-art systems, Hyunda...Fourth-generation Hyundai Tucson Debuts for 2022 with First New Engines in Over a Decade, but Reliability is Still in Question. The Hyundai Tucson has had the same engine options since the 2009 model. However, in 2022, the 2.0L and 2.4L engines were replaced by a 2.5L four-cylinder and a 1.6L hybrid powertrain.P0420: jelentése, okai, javítások. A P0420 ODB2 hibakód katalizátorral kapcsolatos problémát jelez. A autó katalizátor feladata az égési ciklus során keletkező káros szennyező anyagok lebontása. A katalizátor a jármű kipufogógáz-tisztító rendszerének egyik eleme. Katalitikus átalakítónak is hívják.Related: P0420 Hyundai Tucson. Hyundai Tucson P0401 Symptoms. Most of the time, there will not be symptoms associated with P0401 in the Hyundai Tucson. There may be a slight ping or knocking sound on rare occasions. Service Engine Soon Light– P0401 will illuminate the service engine soon light.Tucson. 2019 Hyundai Tucson OBD2 Code P0420 Catalyst System Efficiency Below Threshold. What Does OBD-II Fault Code P0420 Mean? OBD-II Code P0420 is defined …19 Jul 2021 ... ... HYUNDAI ELANTRA SANTA FE TUCSON ACCENT. 31K views · 2 years ago ... Hyundai Tucson 2019 manifold catalytic converter code p0420. Hyundai ...Nov 2, 2022 · JOIN GASDIESEL GARAGE AS WE DIAGNOSE AND REPAIR THE MOST COMMON CHECK ENGINE LIGHT TROUBLE CODE P0420 Catalyst Efficiency Below Threshold Bank 1 SENSOR 2 ON... The 2021 Hyundai Tucson is a small SUV sold in six trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The SE and the Value come standard with a 2.0-liter four-cylinder engine (161 ...A couple months ago I got a check engine light for P0420. Cleared it twice and it came back on both times. ... 2014 Tucson Limited 1980 Chevy C10 stepside Resto Mod(for sale) ... Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: ...Ultimately, if your car won’t go over 20 mph, the highest likelihood is that the ECU triggered limp mode. That’s especially true if it happens suddenly and the car hits 20 mph like a speed limiter. An even more obvious indicator of the limp mode being activated is the check engine light. If it happens suddenly and the car won’t shift gear ...The Hyundai Tucson is a five-seat compact SUV that’s offered in five trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The base engine is a 161-horsepower, 2.0-liter four-cylinder and a ...The price of the 2025 Hyundai Tucson is expected to start around $29,000 and go up to $38,000 depending on the trim and options. SE. SEL. SEL Convenience. XRT. Limited. 0 $10k $20k $30k $40k $50k ...The PCM sets P0420 if the average of calculated oscillation size of rear HO2S signal during predetermined duration is higher than the predetermined threshold. DTC Detecting …this 2019 Hyundai Tucson has a p0420 code. im replacing a faulty manifold catalytic converter=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0420 Saving Repair Parts:C...Problem solved for about $35. Use your OBD2 reader to clear the code and then drive it on the highway for about 30mi. So it has time to cycle the checks. If it comes back then it could be something else. If the plugs were not seated right or wrong you would get missfire codes.The P0430 trouble code is considered generic, meaning it occurs on vehicles of any type and model. The P0430 shows a problem with the emissions system. It is exactly the same as P0420 DTC, with the only difference being that that one refers to the oxygen sensors on bank 1 instead. These codes illustrate two different sides of the engine. 2015 Hyundai Tucson 2.0 P0420 My car started throwing the P0420 code which is almost always a bad cat that needs to be replaced. I had my mechanic put in an order for a universal cat to replace my oem buy I stopped him because I noticed O2B1S1(Upstream) did not have a voltage reading but O2B1S2 did. Recall date. 2020-09-03. Recall no. 20V543000. Hyundai Motor America (Hyundai) recalled certain 2019-2021 Tucson vehicles on September 4, 2020. On December 30, 2020, Hyundai expanded the recall ...Jim Click Hyundai Auto Mall of Tucson AZ serving Marana, Sierra Vista, Nogales, is one of the finest Tucson Hyundai dealers. Jim Click Hyundai Auto Mall; Sales Mobile Sales 520-690-5009 520-690-5009; Service 520-407-4850; Parts 520-407-4830; 700 W Automall Drive Tucson, AZ 85705; Service. Map.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code HYUNDAI P0455 Saving Rep...23 Feb 2023 ... Causes of a Hyundai P0139 Code: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2). Code P0420 Hyundai 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 ... 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 ...Nov 12, 2018 · The most common fix for P0420 in the Hyundai Tiburon is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Tiburon 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 Hyundai Tiburon: 1. Check for Other Codes. The P0430 trouble code is considered generic, meaning it occurs on vehicles of any type and model. The P0430 shows a problem with the emissions system. It is exactly the same as P0420 DTC, with the only difference being that that one refers to the oxygen sensors on bank 1 instead. These codes illustrate two different sides of the engine.If you are a car owner, it is likely that you have encountered the dreaded check engine light at some point. One of the most common trouble codes that many drivers come across is c...Losing a loved one is a challenging and emotional time, and crafting an obituary that truly captures their essence can be a daunting task. When writing an obituary for someone from...Veracruz Check Engine light for Catalytic Converter - P0420. I've been getting periodic P0420 Check Engine codes on Bank 1. Upon some research, many are of the opinion that this 1 (of the 3) catalytic converters going bad. Has anyone else here experienced this and what have you done?P0420 – A fault code suggesting that the efficiency of the catalyst system is poor. P0106 – There is a problem with the MAP circuit and its output range. P0301 – A misfiring in cylinder one, there a numerous reasons this could be happening and so a mechanic should be consulted. Popular Hyundai Tucson fault codes along with an explanation ...Summary. The P2191 code stands for “Manifold Absolute Pressure/Mass Air Flow – Throttle Position.”. It’s logged once the PCM detects a lean mixture in the system. Some issues that can trigger code P2191 include a bad fuel injector, a weak fuel pump, and a malfunctioning mass airflow sensor. An illuminated check engine light, decreased ...19 Jul 2021 ... ... HYUNDAI ELANTRA SANTA FE TUCSON ACCENT. 31K views · 2 years ago ... Hyundai Tucson 2019 manifold catalytic converter code p0420. Hyundai ...Fixing a P0455 can cost anywhere between $20 - $250 to replace an EVAP vent valve. This price is depending on if you replace it yourself and the price of your specific vehicle's part. When using an auto repair shop, the price will go up due to labor costs. There are benefits to using an auto repair shop.Hyundai said it plans to invest more than $10 billion toward accelerating electrification and autonomous vehicle technology in the U.S. by 2025. Part of that pot includes the $5.5 ...Code P0014 Hyundai Tech Notes. The bulletin provides information on how to inspect and diagnose problems related to the Oil Control Valve (OCV) used in Constant Variable Valve Timing (CVVT), if at any time the OCV is suspected as the caused of rough idling, poor acceleration, camshaft timing misalignment-related trouble codes, misfire-related ...Read the definitive used Hyundai Tucson 2015 - 2020 review from What Car?. We tell you what you need to know before you buy.Hyundai Tucson Limited. The Limited costs $36,510. This luxe trim adds a panoramic sunroof, rain-sensing windshield wipers, genuine leather upholstery, ventilated front seats, a power-adjustable front passenger seat, heated rear seats, a heated steering wheel and an eight-speaker Bose stereo.July 2, 2020 by Jason. A sputtering engine can indicate a number of problems. If your Hyundai Tucson has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. Your Tucson’s engine is a giant pump. It pulls in air (where it is measured by the mass airflow sensor).HYUNDAI TUCSON CODE P0440 P0441 P0442 EVAP PURGE CONTROL FIXIf you have Hyundai Tucson and you have check engine light and code P0440, P0441, P0442 EVAP on H...FOLLOW THIS GUIDE if you have a P0420 code. I will explain what the code means, how to diagnose it, ... 2007 Hyundai Sonata Limited 3.3L: Replace CAT: 2001 Volkswagen Jetta GLS 2.0L: Replace CAT: 2003 Pontiac Vibe 1.8L: Replace CAT: 1996 Ford F-150 Eddie Bauer 4.9L:I got a P0420 $07e8 code on my 2019 Tucson 2.0L Preferred (79,000km). No other codes, no excessive noise or anything unusual when driving. I’m hoping this may just be an oxygen sensor issue, but doing some research before taking it in (can’t get appointment at the dealership until the 25th). Combines the Side Barrier Driver and the Side Pole Star Ratings into a Front Seat rating. The Rear Seat rating is derived from the Side Barrier Rear Passenger rating. The Side Barrier test simulates an intersection collision between a standing vehicle and moving barrier at 38.5 mph. The Side Pole Barrier test simulates a crash into a fixed ... The 2021 Hyundai Tucson is a small SUV sold in six trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The SE and the Value come standard with a 2.0-liter four-cylinder engine (161 ...CODE P0420 CHECK ENGINE LIGHT ON FIX HYUNDAI KIA, CATALYTIC CONVERTER FIXIf you have Hyundai Sonata and you have check engine light and code P0420 Catalyst E...Oct 20, 2020 · Hyundai TSB 20-FL-010H Make: Hyundai Number: 20-FL-010H Title: TUCSON 2.0L DTC P0420 - ECM UPDATE AND CATALYST REPLACEMENT Date: 10/20/2020 Models: 2019 Tucson Limited; CODE P0440 P0441 P0442 ENGINE LIGHT ON HYUNDAI ELANTRA SANTA FE TUCSON ACCENT VELOSTER SONATAIf you have Hyundai and you have engine light on and any of the ...Wife said check engine light came on. Scan code P0442. After reading HMA SERVICE manual I fixed the issue on my own with ease. Saved 90 bucks shop fee to rea...Technical Service Bulletins (TSBs) for the 2022 Tucson are official communications between Hyundai & their dealerships that describe processes for troubleshooting or fixing certain common problems ... Esta página está pensada para ayudarte a solucionar los problemas de Código de avería P0420 del Hyundai Tucson. Cubre el significado de Hyundai Tucson P0420, los síntomas, las causas y las posibles soluciones. En el Tucson, el OBDII P0420 suele estar causado por un sensor de oxígeno defectuoso, pero también puede haber otras causas. 779. 39K views 1 year ago VIRGINIA BEACH. JOIN GASDIESEL GARAGE AS WE DIAGNOSE AND REPAIR THE MOST COMMON CHECK ENGINE LIGHT …The Hyundai Tucson is a five-seat compact SUV that’s offered in five trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The base engine is a 161-horsepower, 2.0-liter four-cylinder and a ...Code P0014 Hyundai Tech Notes. The bulletin provides information on how to inspect and diagnose problems related to the Oil Control Valve (OCV) used in Constant Variable Valve Timing (CVVT), if at any time the OCV is suspected as the caused of rough idling, poor acceleration, camshaft timing misalignment-related trouble codes, misfire-related ...Feb 21, 2023 · 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 ... 23 Feb 2023 ... Causes of a Hyundai P0139 Code: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2).HYUNDAI Car Fault Codes DTC - Solaris, Accent, Santa Fe, Tucson, IX35, Starex, Elantra, Getz, Porter, Sonata.. HYUNDAI Common Faults U3FFF Message that appears when using unlicensed OBD 2 diagnostic software. It is not necessary to purchase a license for verification; you can use another software.The catalytic converter is part of the exhaust system in Hyundai Tucson and its main purpose is to convert exhaust gases like carbon monoxide and hydrocarbons that are harmful to health and the environment ... 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 ...27 Jan 2022 ... #mufflerdelete #hyundaitucson #2017tucson 2017 HYUNDAI TUCSON MUFFLER DELETE!!!! ... Hyundai Tucson 2019 manifold catalytic converter code p0420. The Hyundai Tucson is a five-seat compact SUV that’s offered in five trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The base engine is a 161-horsepower, 2.0-liter four-cylinder and a ... 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 ... Code P0420 Hyundai 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 ... Online guru Scotty Kilmer and other people on forums and YouTube says that a gallon of lacquer thinner on half a tank of gas can clean the converter and other components. However some people say the thinner can erode the rubber and plastic parts on newer cars and I assume Hyundai uses these cause it's cheap.With the growing demand for eco-friendly vehicles, Hyundai has introduced the new Hyundai Tucson Hybrid. This exceptional SUV combines cutting-edge technology, impressive fuel effi... The P0420 code is a common diagnostic trouble code that indicates a problem with the catalytic converter in the Hyundai Santa Fe. When this code appears, it means that the catalytic converter is not functioning properly and is not effectively reducing emissions. The catalytic converter plays a crucial role in reducing harmful exhaust emissions ... 2019 Hyundai Tucson- P0420 code on and off. About 6 months ago, after a road trip of about 700 miles, the P0420 code came up, car was at 55k miles. I thought it …Jun 1, 2021 · Limited Sport Utility 4D. $30,390. $19,883. Ultimate Sport Utility 4D. $33,040. $21,240. For reference, the 2020 Hyundai Tucson originally had a starting sticker price of $24,690, with the range ... 20 Jul 2021 ... HYUNDAI OXYGEN CODE P0030, P0031, P0032, P0053 HYUNDAI ELANTRA SANTA FE TUCSON ... Hyundai Tucson 2019 manifold catalytic converter code p0420. The Hyundai Tucson is a five-seat compact SUV that’s offered in five trim levels: SE, Value, SEL, Sport, Limited and Ultimate. The base engine is a 161-horsepower, 2.0-liter four-cylinder and a ... 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 ... The p0420 code is an important warning signal in your hyundai accent that relates to the check engine light. The code indicates a problem with the catalytic converter, which is responsible for removing harmful pollutants. Several factors can trigger p0420, including a malfunctioning o2 sensor or a damaged catalytic converter.The P0430 trouble code is considered generic, meaning it occurs on vehicles of any type and model. The P0430 shows a problem with the emissions system. It is exactly the same as P0420 DTC, with the only difference being that that one refers to the oxygen sensors on bank 1 instead. These codes illustrate two different sides of the engine.The price of the 2025 Hyundai Tucson is expected to start around $29,000 and go up to $38,000 depending on the trim and options. SE. SEL. SEL Convenience. XRT. Limited. 0 $10k $20k $30k $40k $50k ...2016 Elantra 1.8, P0420 only w/ new cat and O2's. I purchased a 2016 Elantra Limited 1.8 w/86k yesterday from a BHPH lot, so no warranty. I did a thorough inspection of the car and everything seemed good. I was allowed to test drive the car with no employee or salesperson. From start up to shutdown, test drive included, the engine was …The exact definition of the P0420 code is “Catalyst System Efficiency Below Threshold.”. It might sound like a severe problem, but the risk of significant trouble is low. You’ll see this code when your engine control module (ECM) thinks the catalyst isn’t working at maximum efficiency. There are two oxygen sensors near the catalytic ...5 Oct 2021 ... ... 49K views · 7:35. Go to channel · $3 O2 simulator fix for P0420 Check Engine Light. MITEEman•1.2M views · 19:13. Go to channel · DEAD...Remove the air intake hose. Disconnect the electrical connector from the TPS. Remove the four bolts on the TPS using a 10 mm socket. Reinstall in reverse order. Tighten the bolts to 11.5 Nm. We hope you find the Hyundai Won’t Accelerate due to the Throttle Position Switch Problem guide helpful.8.0. With 31 cubic feet on offer, the Tucson just edges out the CX-5 (30.9 cubic feet) but trails the cavernous CR-V (39.2 cubes) by quite a bit. That said, it's still quite practical, and the 60/ ...Introduced in 2004, the Hyundai Tucson is a compact crossover SUV that became Hyundai's best-selling model. Originally designed as a smaller version of the Hyundai Santa Fe, the first generation Tucson shared the same platform based on the Hyundai Elantra. The U.S. market had three trim levels: GLS, SE, and Limited.OBD2 Code P0150 Hyundai definition: The O2 sensor produces a voltage based on oxygen content in the exhaust. The voltage varies between .1 and .9 Volts, .1 indicating lean and .9 indicating rich. The ECM constantly monitors this voltage while in closed loop to determine how much fuel to inject. If the ECM determines that the O2 sensor voltage ...P0420 Hyundai Description. The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen …If the P1326 code is caused by a bad KIA or Hyundai ECM software, you can have it upgraded for free at the dealer. If it’s caused by a faulty knock sensor, expect it to cost $150 to $450. However, a seized engine can cost over $10,000. If you’ve done the diagnostics and you know what’s wrong, you are ready to proceed with the fix.Spring. HYUNDAI KIA CODE P0420 CATALYTIC CONVERTER FIX, ENGINE LIGHT ONIf you have Hyundai or Kia and you have engine light and code P0420 Catalyst System …The price of the 2020 Hyundai Tucson starts at $24,690 and goes up to $33,040 depending on the trim and options. SE. Value. SEL. Sport. Limited. Ultimate. 0 $10k $20k $30k $40k $50k. We'd stick ...My girlfriend has a 2017 Accent with 90k miles on it. Over the past week the oil light came on and it was 1.5qt low. So I filled it up. Then the Check engine light came on. P0420 catalytical converter is below spec efficiency. A failed Cat wouldn't cause oil burning. I was thinking a PCV or something. Google says Oxygen sensor can cause the Cat ...Here are the most common causes of P0420 in the Hyundai Tucson: 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 … See moreEdmunds' expert review of the Used 2020 Hyundai Tucson provides the latest look at trim-level features and specs, performance, safety, and comfort. At Edmunds we drive every car we review ...23 Feb 2023 ... Causes of a Hyundai P0139 Code: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2).CODE P0440 P0441 P0442 ENGINE LIGHT ON HYUNDAI ELANTRA SANTA FE TUCSON ACCENT VELOSTER SONATAIf you have Hyundai and you have engine light on and any of the ...Sep 3, 2020 · Recall date. 2020-09-03. Recall no. 20V543000. Hyundai Motor America (Hyundai) recalled certain 2019-2021 Tucson vehicles on September 4, 2020. On December 30, 2020, Hyundai expanded the recall ... The most common fix for P0420 in the Hyundai Veloster is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Veloster into an exhaust shop for an (expensive) new …5 Nov 2021 ... HYUNDAI TUCSON CODE P2270 P2271 O2 SIGNAL ... Hyundai Tucson but the video may be ... GETTING RID OF YOUR P0420 & P2096 CODES FOR ONLY $6!!Top 4 Reasons Why You Replaced O2 Sensor and Still Have Code. The most common codes that people will see in this particular situation are P0134, 0138, and 0139, though you are probably seeing P0420. These codes do not point out to a specific issue but they can help hint at the root cause of the issue. Here are a couple of the parts to take a ...p0420 & P0430 My car is jerking and struggling from 0-40 sometimes. It is a hit or miss with this issue but it - Hyundai 2005 Tucson question. Search Fixya. Browse Categories Answer Questions . 2005 Hyundai Tucson; Hyundai Tucson Car and Truck; Hyundai Car and Truck; Cars & Trucks ... P0420 Hyundai 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. As oxygen ... Oct 20, 2020 · Hyundai TSB 20-FL-010H Make: Hyundai Number: 20-FL-010H Title: TUCSON 2.0L DTC P0420 - ECM UPDATE AND CATALYST REPLACEMENT Date: 10/20/2020 Models: 2019 Tucson Limited; 2018 Hyundai Tucson persistent P0420 problem. Hi Scotty. My brother introduced me to your videos on youtube when I started having trouble with my 2018 Hyundai Tucson SEL. Mileage is about 122K. In June it would not accelerate. I took it in the mechanic said it was a plugged catalytic converter. It never tripped the check engine light before I ...2017 Tucson SE FWD ... They might for a while but sooner or later that P0420 is coming back. I fought this for 4 years as I watched the gas mileage fall from 40 to the mid 30s on my Accent. ... The Hyundai test of the cat happens after the engine has warmed up to at least 150F. | wtxvalidiv (article) | mfyk.