Po420 kia soul

“Guilt is a part of the battlefield that often goes unrecognized,” writes Nancy Sherman, a professor at Ge “Guilt is a part of the battlefield that often goes unrecognized,” writes...

Po420 kia soul. HankC said: My 2014 1.6L Soul had the ECU programming recall done in May 2019 at 32,461 miles, in December my rear catalytic converter failed at 33,766 miles, only 1300 miles after the recall service. Dealership said it was an internal melt down that clogged the exhaust and not covered under warranty (only front is covered in emission warranty ...

Code P0420 KIA Tech Notes. As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic …

Kia Soul Exhaust Manifold Catalytic Assembly. Part Number: 285102EJM0. Vehicle Specific. $2802.62 MSRP: $3958.50. You Save: $ 1155.88 ( 30%) Check the fit. Add to Cart. Product Specifications. Other Name: Manifold Catalytic A; Catalytic Converter, Exhaust Manifold.Replacing Canister Purge Valve SolenoidCODE 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...Fixing P0128 in the Kia Soul is usually a pretty easy thing to do since, 90% of the time, a stuck thermostat will cause the problem. Here are the most common causes of P0128: Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to ...The P0420 is the ECU saying the Catalytic converter is not cleaning the exhaust gases enough, 99% of the time it needs a new Cat. An exhaust leak before the Cat could set that code, but anything that claims to "clean" the problem away long term is BS. Melbourne Australia. 06 Grand Carnival 3.8. mobileterminaluser and John Smith_inFL.All-Star: An expert that got 10 achievements. Kia Master. 85,241 Answers. Re: Google Kia OBD2 fault code lists and look up the codes for yourself, the P0430 and P0420 are worn out Catalytic Converter fault codes. By the way the "0" is a number not the letter, a common mistake by non professionals. Posted on May 28, 2016.p0420 code kia soul | p0420 code kia soul | 2015 kia soul p0420 code | 2016 kia soul code p0420 | 2014 kia soul code p0420 | 2013 kia soul code p0420 | p0420 en. Toggle navigation Websiteperu. Home; Extension; Country; Pricing; Keyword Analysis & Research: p0420 code kia soul. Keyword Analysis. Keyword CPC PCC Volume ScoreHere's a good P0420 diagnostic order for the Kia Sportage: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Sportage 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.

2014 Kia Soul P0420 this morning . CEL On I dont want to have to replace a cat, car runs fine still, what are your first things to check? ... P0420 almost always means a bad catalytic converter. I know from experience the stock catalytic converters from Hyundai/Kia are junk and tend to fail right after the emissions warranty expires2015 Kia Soul Base (1.6L, A/T) P0420 Code. Bought it from a Chevy dealer about a month ago. 72,000 miles on the clock. Maybe 2000 of that is from me. First day exploring my intermittent O2 sensor code I've had since the second week of ownership. My last vehicle was a 2007 Nissan Versa that blew a cylinder after it threw the same 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.P0420 has been coming up regularly for 6-8 months now, and my front cat finally plugged up this week. $1,400 CAD for the parts only, but if I had set the parts aside ahead of time from Rock Auto, I would have paid about $1,000 in total for these items. Labor was another 3.5 hours to replace everything.2014 Kia Soul P0420 question . Hello everyone, I read the rules, but still not sure if this is the right place to ask. As the title states, my gf has a Kia Soul that had a recall on the catalytic converter, which we took to the dealership to have fixed. They assumed the p0420 would be the cause of that (as did I) and they said they would fix the other recalls for the …P0420 - Issue getting Kia to cover recall replacement/repairs. My 2015 Kia Soul broke down a few weeks ago. Using a loaner code reader from Advanced Auto Parts we were able to see the P0420 code. Because of this we sent it to our local mechanic. They saw the same code using their reader (checked twice), looked and confirmed that the catalytic ...I have a 2012 soul with a1.6 no power an d it has the following codes p0420,p0191, p0453. Consistent won’t get above - Answered by a verified Kia Mechanic We use cookies to give you the best possible experience on our website.

jeremiahchub. 56 posts · Joined 2017. #7 · Jun 12, 2019. Also, you may want to try replacing the FUEL pressure regulator itself. that code also goes with that as well. 2010 Molten Red Kia Soul +, 2.0L Beta …Kia Soul Exhaust Manifold Catalytic Assembly. Part Number: 285102EJM0. Vehicle Specific. $2802.62 MSRP: $3958.50. You Save: $ 1155.88 ( 30%) Check the fit. Add to Cart. Product Specifications. Other Name: Manifold Catalytic A; …Money's list of the best budget cars that fit seven or eight passengers include the Kia Telluride SUV and the Toyota Sienna minivan. By clicking "TRY IT", I agree to receive newsle...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 Efficiency...P0420 Code - Catalyst System Efficiency Below Threshold Bank 1. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins. ... P0420 KIA Warm Up Catalyst Efficiency Below Threshold Bank 1 ...Rove R2-4K Pro Hardwire Fuse Selection. MMZ_Thumper · Apr 20, 2024 · TosenR replied 6d ago. 1. Load More. We're the ultimate Kia Soul community dedicated to Soul owners and fans!

Mac's market weekly flyer.

Diagnose and fix P0441 Kia. A P0441 trouble code on a Kia means the ECM has detected an incorrect purge flow. Purge flow is part of the evaporative emissions system. When you fill up the tank, the fuel vapors are collected by the charcoal canister. When you start the engine, the ECM commands a purge operation to pull the vapor out of the ...I have a 2014 Soul with 108,000 miles. Today the check engine light came on. Took it to AutoZone, their reader said bad catalytic converter. I bought a bottle of Cataclean, put it in tank, and after about 20 miles driven the check engine light went off.I believe the key thing to look at for a P0420 code is the downstream O2, or bank 1 sensor 2 B1S2. 2016 Kia Soul ! Save Share. Like. G. geraldine. ... Kia Soul Forums :: Kia Soul Owners. 423.6K posts 50.7K members Since 2008 We’re the ultimate Kia Soul community dedicated to Soul owners and fans! Show Less . Full Forum Listing. Explore …2016 Kia Soul Pulling Both P054A & P0420 Codes upvote r/kia. r/kia *Enough is enough! Anymore spamming of other peoples post downgrading kia either about "kia boyz" immobilizers, engine failure, or car fires will result in a 30 day ban, and a subsequent violation will result in a permanent ban. The Official Subreddit For Kia Motors - EV6, EV9 ...

Has notado que tu automóvil se le ha disparado el Código P0420, siendo uno de los más complicados para desaparecer.Este código de falla que se guarda en la unidad de control del motor determina cuando comienza el proceso de eficiencia del convertidor catalítico.Conoce aquí porque se produce este código, una vez que se asoma no lo vayas a ignorar, procede de inmediato a buscar solucionar ...To diagnose the P0011 KIA 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 is quite famous, and can typically take weeks or months for it to reappear. It's a sign of something causing a problem with the catalytic converter, or at …Like. R. rhandwor. 1284 posts · Joined 2011. #8 · Mar 4, 2014. P0420 Code frustation. If your scanner is that good the front sensor front of Cat. should have a fluctuating wave form. The sensor behind cat. should be more steady wave form. Bang on cat. if noisy replace.18 kia soul + P0335 code. Jump to Latest Follow. 918 views 2 replies 3 participants last post by 56chuzz May 19, 2023. wthobgood Discussion starter. 1 post · Joined 2022. #1 · May 18, 2023. Looking for an snswer on a fix for this, have peplaced both cam sensor A and B replaced and a 02 sensor replaced, still getting P0335 showing.I hope you are doing well . To answer the question, the P0420 indicates that the catalytic converter is not working properly. In order to test it, this is usually performed by emissions shops, or catalytic converter rebuild shops. Special equipment would be required to analyse the gas before and after the catalytic converter.Exhaust manifold part of catalytic converter MUST SEE!=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0420 Saving Repair Parts:C...Unfortunately, the P0420 is a fairly straight forward code, and a fairly common problem. This code points to a failing Catalytic Converter (for Bank1 - the side of the engine closest to the windshield, just below the exhaust manifold). The Oxygen Sensors measure the amount of emissions in the exhaust going into, and then out of the converter.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix P0420 =====Engine Code P0420 Saving Repair Part...2016 Kia Soul OBD2 Code P0420 Catalyst System Efficiency Below Threshold. What Does OBD-II Fault Code P0420 Mean? OBD-II Code P0420 is defined as a Catalyst System Efficiency Below Threshold P0420 Symptoms Check Engine Light will illuminate In most cases, there are no adverse conditions noticed by the driver

Just click in the upper right corner where it says Login/Join. We look forward to your continued parcipitation. Check engine light. P0420. P0420 Catalyst System Efficiency below Threshold. 2018 Niro LX HEV with just over 34,000 miles. So the catalytic converter for some reason is not working as it is supposed to.

This page is meant to help you troubleshoot the Kia Soul P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. ... If the code changes to P0420, that would indicate that one of the O2 sensors is bad on the bank 2 side ...The Kia Code P0420 refers to a diagnostic trouble code that indicates a problem with the catalytic converter in a Kia vehicle. The code specifically points to a …Dec 27, 2022 · 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. Diagnosis: The most common cause of P0420 is a ... I have a 1998 Kia Sportage I'm working and I have 2 codes coming up can you help me with them the cordes are P0717 & P01614 The engine will run but try to drive it will stop running Thanks #63 - Fred - 11/01/2010 - 22:13. subaru forester 2001. code p0420 ... po420 on 1999 kia sephia.Your Soul will likely throw P0420 or the P0430 code. To diagnose a downstream O2 sensor failure, you can use an OBD2 scanner to check for diagnostic trouble codes related to the sensor. Upstream O2 Sensor Failure. Your Kia Soul’s upstream O2 sensor(s), also known as the pre-catalytic converter sensor, measures the air-to-fuel ratio in your ...Definition meaning and fixes KIA P0420: Warm Up Catalyst Efficiency Below Threshold Bank 1 Diagnostic Trouble Code.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 ...The most common fix for P0420 in the Kia Soul is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Soul 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 Kia Soul: 1. Check for Other Codes.I believe the key thing to look at for a P0420 code is the downstream O2, or bank 1 sensor 2 B1S2. 2016 Kia Soul ! Save Share. Like. G. geraldine. ... Kia Soul Owners.

Magnolia table blueberry puff.

Green bay wisconsin 10 day weather.

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. Diagnosis: The most common cause of …Convenience and Innovation. 10.25-inch Touchscreen Display w/ Navigation, Kia Connect, and SiriusXM® Satellite Radio. Rear-View Monitor. Apple CarPlay® & Android Auto™. Smart Key w/ Push-Button Start. Wireless Phone Charger. Cloth and SynTex Seat Trim. Leather-Wrapped Steering Wheel & Gearshift Knob.Diagnostic trouble code(DTC) P0422 stands for "Catalyst 2 Efficiency Below Threshold (Bank 1).". It indicates that the emissions efficiency of Bank 1 catalytic converters are below the minimum allowable limit. This threshold is monitored by the catalyst monitor oxygen sensor, which is located near the catalytic converter's outlet.Search Results for 'p0420' ... buy canada car cargo change cover door engine exclaim first fog for from front good have hello help how install interior issue issues just key kia led light lights love manual meet member model month new newbie not oem oil owner owners post problem problems question questions radio rear red replacement ...You can find common Kia Soul fault codes on this page that when clicked take you to a detailed description. You can also type in the fault code you are getting below to find a more detailed description. ... P0420. Catalyst System Efficiency Below Threshold (Bank 1) Learn More Fixes. 8/10 P0017. Crankshaft Position Camshaft Position Correlation Bank 1 …So to summarize, IF you have the P0455 code on your 2.0L KIA, check your gas cap, and if that isn't it, have them check the reading on the fuel pressure sensor. If it's out of spec, that will be the actual problem. Of course, have them do the smoke test to smoke the system too, but more than likely, it's going to be your fuel cap or your fuel ...Kia Motors has decided that a defect which relates to motor vehicle safety exists in the 2012-2016 MY Kia Soul vehicles equipped with the 1.6L Gasoline Direct Injection (GDI) engine. The defect may cause damage to the catalytic converter due to overheating, resulting in abnormal engine combustion and damage to the ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code KIA P0442 Saving Repair ... ….

How To Diagnose. If you are experiencing problems with your Kia Soul related to the P0441 code, then there are several steps you can take to diagnose the issue. First, check the fuel cap on your Soul and ensure that it is tightly secured. A loose or faulty fuel cap is often the cause of the P0441 code. If the fuel cap appears to be in good ...South Jersey catalytic converter shopHere are some steps to fix a P0420 code Honda Accord. First, remove the O2 sensor and pour 4-6 ounces of seafoam into the opening, replace the sensor, and leave it overnight. Reset the code and then continue driving. Increase the gap between the oxygen sensor and the converter using a spark plug non-fowler.Visit me at: http://www.ericthecarguy.com/O2 Sensor Video: https://www.youtube.com/watch?v=NIzcztO-CCsDiscussion about this video: http://www.ericthecarguy...Here's a good P0420 diagnostic order for the Hyundai Santa Fe: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Santa Fe 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.If you’re in the market for a new car, it’s important to understand the factors that influence the prices of different models. When it comes to Kia vehicles, there are several key ...2014 Kia Soul - Check Engine Light Code P0420. ... Now while the cat can be the cause and most common fault with the po420 code, the o2 sensors can lie to the computer, giving false readings, and set the parameters of a failed / …Jul 24, 2020 · P0420 Catalyst System Efficiency Below Threshold. How to diagnose, repair, and info on symptoms and causes of a P0420 engine code which means the catalytic converter is no longer performing at a normal level. www.obd-codes.com. Several possible issues to check. eGAK009. Detailed information on the P0420 dtc trouble code. Includes why it happens and how to fix your car. Trouble Code - P0420 Catalyst System Efficiency Below Threshold (Bank 1) Welcome to P0420.com, the place dedicated to that DTC (diagnostic trouble code) P0420. The P0420 code is a very popular one and that's why there's a site dedicated to …The P0420 code on a Kia Forte typically indicates a problem with the catalytic converter or mass airflow sensor. This is an important emissions control component that is designed to reduce harmful emissions from the vehicle's exhaust system. ... Reset Check Engine Light Kia Soul. 25. April 2023. Kia Soul Check Engine Light Codes. 24. April ... Po420 kia soul, The price of the 2022 Kia Soul starts at $20,585 and goes up to $29,185 depending on the trim and options. We like the X-Line and GT-Line models, which start at the same price and offer two ..., The repair cost of the P0420 code varies according to relevant part repair, vehicle model, and labor cost. If the P0420 code is triggered due to a faulty catalytic converter, your mechanic may cost from $480 to $1610 to fix it. The estimated cost of repairing the P0420 code is given below., The Niro PHEV has a gasoline-electric powertrain for up to 835 km of range & fuel-efficient driving. With innovative safety & tech. View pricing & features., jeremiahchub. 56 posts · Joined 2017. #7 · Jun 12, 2019. Also, you may want to try replacing the FUEL pressure regulator itself. that code also goes with that as well. 2010 Molten Red Kia Soul +, 2.0L Beta …, Pull off engine cover and see if anything obvious looks wrong. Dang. A code P0303 may mean that one or more of the following has happened: Faulty spark plug or wire. Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel injector. Burned exhaust valve. Faulty catalytic converter (s), This video shows you how to remove and replace the downstream oxygen sensor on a 2012 Kia Soul. The check-engine light was on and the free diagnostic test at..., PDTC - Can't seem to set your inspection monitors on a 2010 and newer vehicle. I'm going to cover with you how to check for permanent codes and how permanent..., Come discuss the Kia Sorento, Rio, Sportage, Soul and more! Show Less . Full Forum Listing. Explore Our Forums. 2011 - 2013 (XM) Sorento Forum 2016 - 2020 Sorento Forum 2003-2010 Sorento Forum 3G 2011 - 2016 Sportage 1G (1993 - 2002) Sportage. Top Contributors this Month View All T., You could try contacting Kia USA and open a case with them. If your problem isn't covered by the campaign, they might be able to help and repair the engine under "good will". 1-800-333-4542. 2019 Kia Soul Base - Gamma 1.6L - 6sp Manual. 2011 Kia Soul Plus - Beta II 2.0L - 4sp Automatic. ikorthauer., 2016 Kia Soul Pulling Both P054A & P0420 Codes. I have a 2016 Kia Soul with 79k miles on it. The check engine light came on a few months ago & it pulled the P0420 code for the catalytic converter, but after a few days, the light went off without me doing any further diagnostic testing so I left it alone. Today the check engine light came on again., Diagnosing P0420 Code - 2018 Kia Soul 1.6L (base), 181k odo . My car was stalling and hesitating to start, so I ran OBD and continue to get a P0420. The CEL won't go away after replacing the following: PCV valve ignition coil pack spark plugs, 2015 Kia Soul.90K miles. 1.6 AT. p0420 code. did temp check up/down stream for both cats and found downstream was 125~ degrees cooler than up stream so I know it's a bad cat (s). But here's my situation: 90K miles, didn't have recall done since my VIN was never under the recall list (searched multiple times), This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. The OBD II trouble code P0272 is described as a cylinder number 4 contribution/balance. In essence, this code is stating that the number four ..., P0420 code. Jump to Latest Follow. 471 views 8 replies 6 participants last post by Oktavf Mar 28, 2024. P&G1990 Discussion starter. 3 posts · Joined 2024. #1 · …, 2016 Soul with the 2.0 engine. Last spring on cold mornings the check engine light would come on with the P0420 code when I check it with my code reader. Then nothing all summer but with the cold weather back, the light is coming on more frequently. I know there was a catalytic converters recall for the 1.6 engine bit not the 2.0., A professional shop can use a smoke machine to test precisely where your Soul’s EVAP system is leaking from. The vapor canister purge valve is a common cause of the P0442 trouble code and the Kia Soul. The purge valve lets fuel vapor out of the charcoal canister and into the intake manifold. They are easy to replace., 18 kia soul + P0335 code. Jump to Latest Follow. 918 views 2 replies 3 participants last post by 56chuzz May 19, 2023. wthobgood Discussion starter. 1 post · Joined 2022. #1 · May 18, 2023. Looking for an snswer on a fix for this, have peplaced both cam sensor A and B replaced and a 02 sensor replaced, still getting P0335 showing., March 2, 2020 by Jason. P2096 is a generic OBD II code, which means that it has the same meaning for the Kia Soul as it would any other vehicle. It specifically indicates that your Soul detected that it is running too lean (too much air for the amount of fuel present). Bank 1 is the side of the engine with the first spark plug in the firing order., K. Kenpachi Discussion starter. 23 posts · Joined 2019. #1 · Sep 7, 2019. 2013 kia soul. Engine light came on and this code came up p2191. I have changed the upstream o2 sensor and the code persists. I read that it can also be a bad mass air flow sensor. I just read a 1000+ page repair guide on this car and it does not seem to have one., Look for ANY rusted open or cracked exhaust pipes/flange connections.ANY unmetered air getting into the exhaust can cause "goofy" codes and the cel to happen. Our 2012 Rio5 also has had the P0420 code and came up at about 77k miles, now at 81k miles. Comes on and off randomly but stays mostly on., TOP 10 WHY ENGINE MISFIRE ON KIA OPTIMA, CAR MISFIRESIf you have Kia Optima that misfires and you want to know the most common things that can make Kia Optim..., 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..., 2014 HONDA ACCORD. 3.2L. V6. 2WD. AUTOMATIC. 118,000 MILES. Hi, my engine light came on and I ran a scan, I got P0420, p0430, P0174, and P0171 codes. I read online that I should replace all 4 o2 sensors and it should be fixed. Before I do this, I wanted to see if I can get someone's input., Answer: OBD-II trouble code P0420 indicates a possible fault with your Kia Sedona's catalytic converter. The actual description for trouble code P0420 is "Catalyst System Low Efficiency". With a P0420 it is very important to properly diagnosis the vehicle's entire emissions system. P0420 may be a false code if other emission problems exists ..., A code P0420 may mean that one or more of the following has happened: Leaded fuel was used where unleaded was called for (unlikely) A damaged or failed oxygen / O2 sensor. Downstream oxygen sensor (HO2S) wiring damaged or connected improperly. The engine coolant temperature sensor is not working properly., No matter what your religion - or lack thereof - it's useful to keep an open mind about the possibility of a spirit guardian. Let's identify yours! Advertisement Advertisement The ..., 18 kia soul + P0335 code. Jump to Latest Follow. 918 views 2 replies 3 participants last post by 56chuzz May 19, 2023. wthobgood Discussion starter. 1 post · Joined 2022. #1 · May 18, 2023. Looking for an snswer on a fix for this, have peplaced both cam sensor A and B replaced and a 02 sensor replaced, still getting P0335 showing., 704. 123K views 2 years ago. HYUNDAI KIA CODE P0420 CATALYTIC CONVERTER FIX, ENGINE LIGHT ON If you have Hyundai or Kia and you have engine …, The largest of three recalls posted on the National Highway Traffic Safety Administration website Thursday covers nearly 379,000 Kia Soul small SUVs from 2012 through 2016 with 1.6-liter engines., Kia Soul Battery Draining: Causes + Diagnosis. May 16, 2023 by Jason. If your Kia Soul's battery is draining, it's something that'll need addressing right away. If it is draining while your Soul isn't running, something is drawing current that shouldn't be. If the battery drains while driving, there's likely an issue with your car ..., South Jersey catalytic converter shop, About 1000 miles ago I started getting both P0420 and P0430 codes. I reset, but they came back in a week and since then I have been getting either a p0420 or a p0430 but not both at the same time. ... Come discuss the Kia Sorento, Rio, Sportage, Soul and more! Show Less . Full Forum Listing. Explore Our Forums. 2011 - 2013 (XM) Sorento Forum ..., 2016 Kia Soul OBD2 Code P0420 Catalyst System Efficiency Below Threshold. What Does OBD-II Fault Code P0420 Mean? OBD-II Code P0420 is defined as a Catalyst System Efficiency Below Threshold P0420 Symptoms Check Engine Light will illuminate In most cases, there are no adverse conditions noticed by the driver