P0420 Code Hyundai Accent - Hyundai accent with P0420 code?">Anyone have problems with Hyundai accent with P0420 code?.

If the oil level is too low, the camshaft actuators won’t work properly. P0497 is a diagnostic trouble code (DTC) for "Evaporative Control System Malfunction". If you’ve taken the quiz above, you’re probably wondering about Stella and her very particular trip to the grocery store. This morning I checked my codes again and now I have P0420, P0455 (Evap Emission Gross Leak), and P0442 (Evap Emission Small Leak) codes. Third, check the wiring and connections for any issues. You need to select one and press enter. Next, connect a DC milliammeter between pin #1 and Ground to measure pump current. blow mold light replacement P0030 indicates for the engine to operate properly, the engine exhaust should have a specific air-fuel ratio of 14. Has your check engine light recently turned on? Are you seeing the dreaded error code P0420 on your vehicle’s diagnostic scanner? Don’t panic just yet. A somewhat common issue with the Hyundai Tucson is the P0449 code. SOURCE: engine code $7E8: engine. How to fix you emissions p0420 code for cheap, easy, fast. P0420 is almost always a bad catalytic converter in my experience; it means "Catalyst System Efficiency Below Threshold. There are many factors that can trigger this trouble code, including problems with the ignition system and fuel delivery, vacuum leaks, and engine mechanical issues, …. May 25, 2021 · Car will have to be lifted for access from above and below. Anyone have problems with Hyundai accent with P0420 code? I replaced the catalytic converter last year in September and it fixed my P0420 code up until now today I have a check engine light for the same code again. Joined Oct 26, 2020 · 13 Posts Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and. P0030 is the code for HO2S Heater Control Circuit (Bank 1 Sensor 1) What the P0030 code means. The EVAP system usually consists of. To diagnose the P0326 Hyundai code, it typically requires 1. Some possible causes of p0326 code are faulty knock sensor, damaged starter motor, and malfunctioning wiring harness. I just pulled a P0420 (Catalyst System Efficiency Below Threshold) code. Lacking power slightly on acceleration. The fault code P0420 is caused by the catalytic converter falling below minimum efficiency level as measured by the catalytic converter monitor sensor (similar to an O2 sensor, but different function). If your Santa Fe’s PCM doesn’t know the engine temperature, it’ll keep the fuel mixture rich. Hyundai said it plans to invest more than $10 billion toward accelerating electrification and autonomous vehicle technology in the U. Price: Alternate: No parts for vehicles in selected markets. 1Applicable Vehicles: 2-16MY ACCENT (RB) 1. cant get over 60 MPH and sometimes. 6L L4 Oxygen (O2) Sensor | RockAuto RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Code P00B7 is commonly caused by low coolant levels, faulty thermostats, bad water pumps, or malfunctioning ECT sensors. Trouble Code - P0420 Catalyst System Efficiency Below Threshold (Bank 1) I have 2002 Hyundai Santa Fe 2. 1K members Since 2004 A forum community dedicated to Hyundai Elantra XD owners and enthusiasts. 9 while O2 sensor 2 is holding steady at around 750 (between 735 -765). Here's a simple way to add accent lighting in your kitchen for a nice, warm glow. Additionally, if a large leak is detected, it may indicate a fuel vapor leak or lack of. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Look for your vehicle’s fuse box and check the one for the RPM gauge. P2178 and P0420 on 2006 Cadillac STS 3. The most common fix for P0420 in the Hyundai Tiburon is a new catalytic converter, followed by an O2 sensor replacement. 7 AWD, 142, 000 with code PO420, that also gets poor mileage since code began coming on, and frequently goes off by itself(but not …. P0420 always means cat replacement. And you just cut off the nuts on the OE as they give you new nuts and bolts and gaskets. Scan this QR code to download the app now. Next time you fill up, add a gallon of lacquer thinner (got mine at Lowe's for $9) and then fill your tank up. JOIN GASDIESEL GARAGE AS WE DIAGNOSE AND REPAIR THE MOST COMMON CHECK ENGINE LIGHT TROUBLE CODE P0420 Catalyst Efficiency Below Threshold Bank 1 SENSOR. 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. Jump to Latest Follow 2K views 2. The first thing you want to do when trying to fix P0420 in the Elantra is to verify there aren’t any other trouble codes. rachel weaver bj Once a mechanic has confirmed the validity of the P2096 trouble code, the following action (s) may be in order: Repairing a vacuum or other hose/line leak. It should be held steady above. A logged P0638 code means that the PCM has detected that the throttle actuator is not in the right position. I went to the gas station just fine. Jan 26, 2016 · 7 posts · Joined 2016. Catalizador Bujías Sensor de oxígeno Código P0420. You should see the accented letter inserted as soon as you release the Alt key. I’ve Done plenty of these cats, between veloster and accent. CRC Guaranteed to Pass Emissions Sensor Cleaner. Add to quote; Share Only show this user. ) 2012 Hyundai Accent Engine Consumer Complaints Details. In very cold temperatures, the occupant detection system (ODS) may not be able to determine if a child restraint seat is in the front passenger …. The OBD-II code P0335 is a generic diagnostic trouble codethat stands for “Crankshaft Position “A” Circuit Malfunction. I tested my O2 sensors and they are reading fine, Sensor one is jumping between. This code is logged when the PCM detects that the signal from the evaporative pressure sensor is below the specified value. I’m apprehensive about paying another $200 dollars for another diagnostic to confirm that I may have to replace it plus the $200/hr labor fee and parts on a car that may or may not continue. I've heard the Cat lasts like forever, so I'm hesitant to just replace it without finding the underlying issue. What are the Common Causes of the P0447 Code? Various EVAP system issues can cause a P0447 code. It’s pretty hot most of the year in Texas so it doesn’t happen often. Here’s a good P0420 diagnostic order for the Hyundai i20: 1. Diagnostic trouble code (DTC) P013E stands for “O2 Sensor Delayed Response–Rich to Lean (Bank 1, Sensor 2). HYUNDAI SONATA CODE P2270 P2271 ✓ P0420 code fix permanent easy cheap 【2024】 ⚠️⚠️⚠️ HYUNDAI ACCENT ELANTRA TUCSON 2018 1. Intermittent P0420 code, tends to pop up when humidity is high, Accent 2016 SE. Code p0420 for catalytic converters. Modern Engine Management Systems leave a little bit of extra. best sports bars near me now '03 Hyundai Elantra fault code P0420. I’m curious if these two codes have anything to do with each other OR if anyone has had similar experiences and have any. One of the more expensive catalytic converter cleaners. The Hyundai Elantra, Santa Fe, Sonata, and Tucson can all exhibit P0420 codes. Check the wiring and the connectors. - O2 sensors harness is open or shorted. It means that the ECM/PCM has detected a problem with that circuit. Come share news and pictures and discuss everything related to Hyundai. The first thing you want to do when trying to fix P0420 in the Sonata is to verify there aren’t any other trouble codes. ” It indicates that the exhaust system’s oxygen …. Here's a good P0420 diagnostic order for the Hyundai Sonata: 1. MD (2011-2016) Elantra sedan/coupe. A lack of general engine performance. 488 views 4 replies 4 participants last post by Majestictobil 5d ago. Hyundai OBD II P0420 Trouble Code. I have a 2014 Hyundai Accent and the check engine light is on. I currently have 242,000 miles on the car. The Engine Control Module controls the airfuel metering system for driveability, fuel economy, and emission control. When the P0420 code appears, the catalyst system efficiency is below the threshold for a particular engine bank, often referred to as Bank 1. When came back to my hotel, checked the code (have an OBDLink bluetooth dongle), it was P0420 - …. Obviously, the other bank will be. The E8 and E9 represent different modules or parts of the vehicle from where the codes are retrieved. P2191 code definition System Too Lean at Higher Load Bank 1 What the P2191 code means P2191 is an OBD-II generic code for the engine control module …. Code P0230 is commonly caused by defective fuel pumps, fuel pump relay failure, and wiring issues. How to diagnose code P0420 on a Hyundai. Hold down the Alt key on your keyboard. Thought it might be the gas cap, so I cleared it a few times, but it keeps coming back. ; Issue Severity: LOW – Continued driving for a short period of time is okay Repair Urgency: Get this fixed within the next month to prevent drivability problems and excessive fuel consumption. The cost to diagnose the P0620 code is 1. 3 Flex Fuel and about 251,000 miles. As the code description implies the P0421 Hyundai 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). A quick BS trick that worked for us, get your gas tank to about half empty. Jump to Latest Follow Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and even the new Kona!. The 3rd pin is typically for the command signal from the ECM. Last year, I had a P0420 code and subsequently had the catalytic converter and two oxygen sensors replaced. Additionally, if a large leak is detected, it may indicate a fuel …. P0421 definition: Bank 1 Catalytic Converter Efficiency is Below Threshold on Cold Start. The P0420 diagnostic code means "“Catalyst System Efficiency Below Threshold". Symptoms to look out for include an illuminated check engine light, issues with the anti-lock brakes, …. tristar cobra 20 gauge review breakinglink Discussion Starter · Jun 14, 2018. DTC P0450 stands for “Evaporative Emission System Pressure Sensor/Switch. In plain English, your engine is burning a lean fuel and air mixture. A bad catalytic converter isn't a hazard to the driver but it can overheat and destroy engine components. walmart optical hours of operation So, where do the sensors go? I am being told the catalytic converter needs to be changed along with the sensors. Additionally, you will need a multimeter and a scope to perform various tests. This issue can affect the vehicle’s performance and fuel efficiency. Mountain Man Mo · 530K views ; How to Fix HYUNDAI P0455 . After 130 miles of driving, the P0420 code came back. In the interim, oil consumption issues can clog …. Reactions: worksonit and Old's Cool. Parts and labor are warrantied for a. I replaced the catalytic converter last year in September and it fixed my P0420 code up until now today I have a check engine light for the same code again. The P0130 code stands for “O2 Sensor Circuit Malfunction (Bank 1, Sensor 1),” which means there’s an issue with the O2 sensor on bank 1. It came back on tonight while I was at work (delivering pizzas) and one of the …. realtree rtk200 go kart parts P0420 Catalyst System Low Efficiency. Oct 21, 2020 · =====Claim your FREE engine code eraser 👉 https://free. The p0451 hyundai code is an indication of a malfunction within the evaporative emissions system. To diagnose the P0496 Hyundai code, it typically requires 1. It was fine for six months, and then the same code came back. Whilst still holding on to the Alt key, press the character’s alt code. You can tell when P0030 is in effect if the check engine light is lit and if your vehicle suffers from decreased fuel mileage. 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. Catalytic converter replacement in your car (Code P0420). Page 1 of 13 1 P0420 Check Engine Light. El código P0420 nos indica que hay una avería o deficiencia en el catalizador TWC, que tiene el objetivo de reducir las emisiones. Have a 2001 Hyundai Elantra; have a P0420 code. Diagnostic trouble code(DTC) P0420 stands for "P0420 Catalyst System Efficiency Below Threshold (Bank 1). It also might not start at all at the gas station. Around 104,000, P0420 code popped up. It comes on and off intermittently every few hundred kilometers. Hyundai Accent P0136 Symptoms Often, the only symptom of P0136. trisha yearwood recipes food network 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. Now I got the code reader and read the code. Inspect the catalytic converter: Look for any physical damage or clogging in the catalytic converter. replaced cat, unit still - Answered by a verified Hyundai Mechanic. nephilim caucasian Feb 26, 2022 · 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. Three types of codes can give clues as to what’s going on with your vehicle. You can plug a scan tool into your Accent and command it to clear the codes, or you can repair the EVAP leak. I think my next move is to replace the downstream O2 sensor even though it was replaced in November 2011. Jan 27, 2020 · 2013 Hyundai Accent 255K miles. ~This also true for the po430 Code!Check out My Amazon Auto Accessories Store! Lets make that Weekend job. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a standard OBDII trouble code,. Continue reading if you want to know the …. The most common issue being an excessive rich condition caused by a misfire or fuel trim problem. Or check it out in the app stores     2016 Hyundai Veloster with a P0420 catalytic converter code. Is it really dangerous for me to operate my vehicle if check engine light is on with p0420. The first thing you want to do when trying to fix P0420 in the Sonata is to verify there aren't any other trouble codes. I decided to try the Dura Lube Catalytic Cleaner in the gas tank. In most situations, the P0141 trouble code is only going to lead to a Check Engine Light. Find the right Occupant Module for your 2013-2019 Hyundai with Hyundai OEM Parts Direct. P0441 is related to the evaporative emissions control system (EVAP) and should not be. Diagnosis: A cylinder 3 misfire can be caused by anything from faulty spark plugs to low engine. I live in Virginia where they don't have emission testing. 0L GDI (no turbo) About 6 months ago, after a road trip of about 700 miles, the P0420 code came up, car was at 55k miles. HYUNDAI SANTA FE CODE P0190, P0191, P0192, P0193, P0194 FUEL RAIL PRESSURE SENSOR CHECK ENGINE LIGHTIf you have Hyundai Santa Fe and you have check engine li. P0420 - Catalyst System Efficiency Below Threshold Bank 1. I live in Virginia where they don’t have emission testing. The most evident symptom of a P0455 code, besides the check engine light coming on, is the strong gas smell you’ll notice near the fuel tank. By clicking "TRY IT", I agree to receive. Hello, and thanks in advance for your time! I recently got a CEL on my 2017 Hyundai Accent with 140,000 miles that came back as P0420 “Catalyst System Efficiency Below Threshold (Bank 1). 6 codes p0300,p0303,p0304,p0301. After the flush put new spark plugs in and 24 hours later engine light is on p0420. The P0326 code means that the Engine Control Module (ECM) has detected a reference voltage from the knock sensor that has fallen outside the threshold of acceptance set by the manufacturer. Jump to Latest Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and even the new Kona! (2007-2012) Santa Fe MC (2006-2011) Accent. Car runs great, as a matter of fact just returned 2 tanks at 36+ mpg (242. Apr 26, 2022 · I've replaced the entire exhaust system now twice on my 2013 Hyundai Accent SE Hatchback. The cost to diagnose the P0442 Hyundai code is 1. P0455 indicates a large leak in the evaporative emission control system. envirotemp 40 gallon water heater To diagnose and fix this issue, you can follow these steps: 1. 5v, so it is possible it is the cause, but not definitive. - Catalytic converter deterioration or malfunction. Anyone have problems with Hyundai accent with P0420 code? I replaced the catalytic converter last year in September and it fixed my P0420 code up …. You can either hollow it out and use an o2 anti-fouler and pray that the code goes away, or fix it the right way by replacing the cat. Instead of replacing the cat I bought headers and a high flow cat. I have a 2019 Hyundai Tucson with a 2. Top 4 Reasons Why You Replaced O2 Sensor and Still Have Code. That’s the catalyst nearest the engine. This code suggests that the oxygen levels are below the desired threshold (Bank 1), which most often results from problems with your car's exhaust or fuel systems. co 👈=====Engine Code HYUNDAI P0455 Saving Rep. Apply +12V to pin #4 and then Ground #2 for the valve. Originally Posted by WobblyElvis. Replaced both o2 sensors and erased codes, drove for about 50-60 miles no CEL but still bad performance. I wish I could remember what exactly it was but I don’t recall. I just went through this over the last three years with my Hyundai Accent. When they see that the converter is not "cleaning" the exhaust enough to meet specs, the Converter is deemed "below threshold" and the P0420 is set. Does Cataclean really fix a P0420 / P0430 error code and catalytic converter. If your OBD-II scanner indicates a code P0457, address the issue with the help of this comprehensive guide. Several factors can trigger p0420, including a malfunctioning o2 sensor or a damaged catalytic converter. OBD2 Codes 101; P0420 Code; P0430 Code; P0300 Code; P0455 Code; P0401 Code; P0172 Code; …. P0420 Catalyst System Efficiency below Threshold (Bank 1) AutoHex Online Help: Hyundai ACCENT(LC) 2003. Was driving last weekend in the mountains (Lake Tahoe -> Yosemite -> Mammoth Lakes) on my 2019 Hyundai Ioniq Plug-in hybrid. (P0420) engine code -- Catalyst System Efficiency Below Threshold Bank 1. This page is meant to help you troubleshoot the Hyundai Tucson P0420 trouble code. my cars performance is very poor car won't go over 100 km/hr. How to replace the knock sensor and map sensor fast and easy. 2010 Accent fixed misfire codes (P030x) by replacing ALL ignition coils+ ALL spark plugs A P0420 code is bank 1 sensor 1. lonestar western decor reviews 960 Great Deals out of 28,213 listings starting at $2,900. I couldn't even begin to count how many accents I've had to replace cats on. 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. In all my years of being a mechanic and specializing in electrical diagnosis. 2010 accent: I bought it with roughly 11,000 miles, at 34,800 now. 20 Report; ctlute answered 6 Used Hyundai Accent. In other words, it’s not removing harmful combustion byproducts from the exhaust. 6L ENGINE CODES: P0326 / P0441 2012-- 2013 Accent & Veloster P0420 code fix . In the case of GM vehicles (and possibly others) if the idle speed is over 200 rpm higher than expected, this code will be set. Verify the code with an OBD-II scanner and reset the check engine light to see if it comes back. In this case, the P0507 DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is greater than the desired (pre-programmed) RPM. Replace worn-out spark plugs or spark plug wires. My 2008 Hyundai Accent is running rough and using more fuel, will hardly run a speed of 40mph. P0136 is a common OBDII code that occurs in the Hyundai Accent. I currently have a 2014 Hyundai accent that I’ve had since 2017. A variety of causes can trigger the P0440 code, with the most common one being a loose or damaged. Oct 13, 2023 · Definition and Meaning Fixes Hyundai P0420 Diagnostic Trouble Code: Catalyst System Efficiency Below Threshold (Bank 1)Causes of a Hyundai P0420 Code:Heater. Hyundai Accent Codes Hello, I have a 2017 Hyundai Accent with 140,000 miles and I recently got the P0420 code. How to replace a catalytic converter DIY with Scotty Kilmer. the greatest showman wiki I clear it, but it usually will come back within 100 to 200 more miles. by Hyundai Accent - 2016 - RB-02 head unit firmware update. What's New; Forum Listing; 2004 Hyundai Elantra GT Throwing Codes P0300/P0420. A faulty vent control valve most commonly causes P0446. I suggest you have a mechanic like one from YourMechanic do a complete diagnostics of …. The P0420 Diagnostic Trouble Code is a clear indication that your vehicle's catalytic converter is not efficiently functioning. In this video, we diagnose a P0420 on a Toyota Camry with over 330,000 miles! Enjoy!. Repair Urgency: Get this code fixed withing the next month to prevent issues related to the emissions system including failed inspections. The Honda Odyssey Code P0420 refers to a diagnostic trouble code that indicates a problem with the catalytic converter efficiency in the vehicle’s exhaust system. The P0442 code stands for “Evaporative Emission Control System Leak Detected (Small Leak). An expert that got 5 achievements. Engine is most often at full operating. The car is running and getting 37 mpg. P0420: betydning, årsager, reparationer. To diagnose the P0450 Hyundai code, it typically requires 1. The guy I spoke with today told me that the last catalytic converter he replaced was on a 2020 Hyundai and the extended warranty covered the $2,400 fee. I recently got a diagnostic computer check on my 2005 Hyundai Elantra 4DSD that has over 95,000 miles and got the code P0420 showing the following: 1. showplace 16 inver grove heights mn Plus: Elon Musk’s extremely busy week Good morning, Quartz readers! US state attorneys called for a recall of Kia and Hyundai cars. P2401/P2419 may relate to a check of the pump running and the solenoid closing. 2012 Hyundai Accent Owner Comments. Hi, sorry my computer froze up. I replaced both front and rear O2 sensors and the code has never returned. Nov 15, 2018 · This trouble code references a number that is given to you when you plug your Accent into an OBDII scanner. It may be causing the misfire but if it isn't that is what will ruin a cat real quick. Before taking your i30 into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. Jan 23, 2024 · To troubleshoot the P0420 code in the Hyundai Elantra, follow these steps: 1. Some of the common symptoms of the P0325 …. I have recently been asked to work on my wife's friend's car. P0420 catalytical converter is below spec efficiency. It can sometimes be tricky to diagnose. Some of the common causes of the P0326 code include a defective knock sensor, wiring issues, and a faulty PCM. I picked up a new daily driver and it came with a check engine light. Catalytic Converter Efficiency Below Threshold: Code P0420 & P0430 Diagnosis and Repair. The P0420 code is a generic powertrain code that appears in Hyundai Accent vehicles when there is a problem with the catalytic converter’s efficiency. Fix - We just replaced the crankshaft sensor and the engine knock went away after a min or so at idle. And my gut feeling is the reduced mileage is a good indicator that maybe the cat. Hyundai Accent P0420: Meaning, Causes, + How to Fix. HYUNDAI SONATA CODE P0420 CHECK ENGINE LIGHT ON CATALYTIC CONVERTER FIX If you have Hyundai Sonata and you have code P0420 and engine light . us/OE6UsK repair smith https://fxo. Would it be the alternator or the ECM for P0620. This indicates the powertrain control module (PCM) recognizes an issue with the knock sensor or its circuit. These are all major issues, so You will need to take …. Clicking on the code menu will read the OBDII codes (e. Most auto repair shops charge between $75 …. Odd electrical problems that come out of nowhere can often signify a blown engine fuse - check and change yours here! 2018 Hyundai Accent SEL 1. P0451 is usually caused by either a bad EVAP pressure sensor, a clogged fuel tank relief valve, EVAP lines, EVAP wiring, or a bad fuel cap. For an OBD2 code list, please see our Hyundai code list or the appropriate generic list. If you clear the code without fixing the cause, it will return. This is the 3rd time in a year my car has given the p0420 code. It seams to be more likely at half a tank Or less. Here’s a good P0420 diagnostic order for the Hyundai Elantra: 1. So far checked codes and had p0420 which has been there a while, and p0011. Roadside Woes: 2006 Hyundai Accent's Sudden Highway Stall and Persistent Refusal to Restart. The leak is about 12 inches past the converter and I'll have it repaired next week. We see P0420 a lot at work and always look for a bad flex pipe. This code suggests that the oxygen levels are below the desired threshold (Bank 1), which most often results from problems with your car’s exhaust or fuel systems. A failed Cat wouldn't cause oil burning. They wanted like $2500 to do it which is why I got a good deal on the car. Some possible causes include a malfunctioning VSS “B”, circuit issues, and PCM troubles. It will then give you the code for that sub menu. Symptoms of p0420 code include poor engine performance and decreased fuel efficiency. Ths code HYUNDAI P0420 CODE | . the pre converter has the same specs as the main. I will replace cylinder 1 coil pack. Cylinder misfires will significantly reduce. It’s throwing a P0420 code and smells like burning rubber and there is smoke coming from my front passenger tire, when - Answered by a verified Auto Mechanic hello there i have a 2004 hyundai accent 5 speed standard and i noticed a smell like a burning rubber smell when the windows are down and driving like highway speeds or going up. To diagnose and repair the root cause of the P0421 code in your Hyundai Accent, follow these steps: Verify the code: Use a scan tool to check for the P0421 code and any accompanying codes if present. Yes, cylinder misfire issues can be related to the engine code P0420 in Ford F-150. Le baje y limpie el catalizador y quedo fluido bien. When you let the engine idle again, the voltage. It is typically caused when the O2 Sensor voltage is not within normal operating range. A Hyundai’s “check engine” light comes on when the onboard diagnostic system detects a problem that can effect the way the engine runs. I drive a 2017 Hyundai Accent with 99k miles.