2018 honda pilot emissions system problem light

The check engine light came on today for my 2018 Honda Pilot EXL FWD (~60k miles). I hooked up a reader and there was one code, P0171 - System Too Lean Bank 1. Believe this indicates either there's too little fuel and/or too much air. I did some basic troubleshooting and have come up empty.

It fixed my problem! So, same deal as esnowberger, I came to a stoplight, and the dashboard went nuts. Emissions System Problem, Transmission System problem, Blind Spot Info system problem. My stomach dropped. The light turned green, I pressed the gas, and the car would move, but literally at a snail's pace.Most of us keep some flashlights and candles around for when the power goes out, which works well enough. If you’d prefer something a little more automated, Make shows off how to b...13 Other Fuel System problem. Failure Date: 01/29/2024. Safety issue: excessive emissions and melted catalytic converter (environmental risk)/fire risk my car needs all new fuel injectors. If you read online, fuel injector issues are rampant on Honda vehicles. North city Honda in chicago diagnosed the vehicle.The 2017 Honda Pilot has 282 NHTSA complaints for the engine at 7,464 miles average. (Page 1 of 15)Starting in 2030, California will require all light-duty autonomous vehicles that operate in the state to emit zero emissions. Signed into law by Governor Gavin Newsom on Thursday,...In a Honda Pilot Vehicle, the Emissions System Problem message on the dashboard is common and shows an issue with the blend of air to fuel, in your engine. It can be simply repaired by replacing the fuel injectors. That warning message normally appears at 40,000 to 60,000 miles, sometimes it comes earlier. In this article, we will discuss the ...Honda debuted its 10th-generation Accord for the 2018 model year, featuring updated styling, tech, and a new range of powertrain options. Unfortunately, it seems the freshly …FS: I have a 2019 Odyssey Elite and the following lights come on: Adaptive cruise control problem (ACC); Auto high-beam problem (A); Road departure mitigation system problem; collision mitigation system problem; lane keeping assist problem (LKAS); brake system lights. My problem is intermittent. I can make it go away most of the time by pouring ...

May 16, 2022 · Fixed! 3rd Gen Honda Pilot LX EX EXL Elite AWD DTC P0420 Engine Emission System Problem Error CodeProduct Info: https://www.amazon.com/dp/B00MDCGI6IP0420 cod... 1 Posts. #56 · Dec 8, 2018. I have a 2019 Honda Pilot Touring and it only has 1300 miles on it and the emissions light and AWD engine light came on. I took it to be serviced and they said it was the 02 sensor and replaced it. I picked it up yesterday and drove maybe 20 miles and both lights are back on.Light the pilot on a gas-log fireplace by turning the gas flow knob to the “pilot” setting, holding the knob in and using a match to ignite the pilot. After lighting the pilot, con...Failure Date: 09/23/2022. Our Honda Pilot 2016 starting experiencing fuel surging issues in July 2018 and was taken to our nearest Honda dealership on 7/03/18 in the dalles, oregon. Honda stated it was a code c1841-27 which was repaired with no mention of fuel injector extended warranty issues, document included.Honda / By The GearShifters Team. An issue with the ratio of fuel to air in the engine is indicated by the emission system warning light. Between 40,000 and 60,000 miles, the fuel injectors in the Honda Pilot can malfunction. Also possible for replacement is an oxygen sensor located close to the catalytic converter.

Summary: Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a ...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Wanted to report the "Emissions System Problem" that many have had to deal with finally hit my 2016 Pilot Touring (see sig). ... I own a 2016 Honda Pilot with 34,700 miles on it. I too am having the emission indicator light coming on intermittently. My Pilot has been back to the dealer 4 times and is going back next week again for same issue.Many drivers report that their Honda Pilots develop emissions system problems. This is particularly common in more recent model vehicles including the 2016, 2017, 2018 and …If you follow the right steps, you can stop this from happening. Here are 5 things you can do to solve Honda collision mitigation system problems. 1. Keep the sensor clean. The sensor is basically the medium for the signal to pass through. Its task is to observe whatever lies in front of it and to analyze its structure.I have a 2016 Honda Civic EX-T (~70k miles) In June 2021, the emission systems warning light came on. I used an ODB2 scanner and read code P2097 ( Post Catalyst Fuel Trim System Too Rich Bank 1 ). I reset the code, and it came back mid -July 2021 Since it came back, I took it to a repair shop. They replaced the O2 sensor (lower in …

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When the Check Emission System light illuminates on your 2013 Honda Civic’s dash, it means your emissions control system is malfunctioning. It could be a simple problem (such as a loose fuel cap) in certain instances, and in others, it could be considerably complicated, such as the Check Engine Light causes on the 2012 Honda Civic stated …The "Emissions System Problem" warning on a Honda Accord typically indicates an issue with the vehicle's emissions control system. It is usually a sign that there is a problem with the emission system or some other related parts in your Honda Accord if the check emissions system light is on. Depending on the issue, it can range from a ...Secondly couple of days back say "Check Emission System" light is on. So took to to Autozone and they gave the following code. P3400 - VALVE Pause System (VPS) STUCK OFF BANK1. 61-1 - Control Unit low Voltage. So went to Honda dealer to replace the Valve and they said $300+ and O ring $2. Bought only O ring and ordered Valve from amazon for $32 ...Engine check light emission problem honda systemEmissions system problem honda pilot Honda pilot 2016 emissions systems problemsEmissions system problem honda pilot. Check Details 2017 honda cr-v emission system problem/check engine light on: 9 complaintsHonda pilot “emissions system problem” light and car alarm going off for no apparent reason Honda Accord's emission system ... Hello I have a 2018 Honda Odyssey ….Emmision light is on ! Had it coded and it came up possible fuel injector issue. seems to run fine ...What Does the Emissions System Problem Message Mean on a Honda? The emission system's warning light shows an issue with the air-to-fuel blend in your engine. For Honda Pilot, its fuel injectors usually become bad at 40,000 to 60,000 miles. The oxygen sensor close to your catalytic converter might need to be replaced.

Danny talks to an automated lighting expert about wireless remote controlled lighting. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio Show...7 posts · Joined 2022. #6 · Oct 3, 2022. My problem with the transmission and Blind Spot Warning system problem came on again. I pulled over and restarted the car. There were no warning indicators on the restart and my transmission and blind spot indicators were working. The last 2 times I took it to the dealer and they did a transmission ...So if your check engine light is on and shows check emission systme this might help you out.The most obvious symptom of a Honda emission system problem is the illumination of the check engine light on the vehicle’s dashboard with the message “check emission system”. The check engine light serves as a warning that a problem has been detected. However, it doesn’t provide specific details about the exact issue, so it’s ...My emissions system problem light showed up today at 18 degrees F. I've been driving in single digit and sub-zero temps over the last couple of weeks without …Feb 4, 2023 · cvandam said: My 2016 Honda Pilot with 50k miles has had the Emission System Problem text show up on the dash along with the check engine light intermittently for the past 4-5 months. My mechanic has looked at it three times and can't figure out why the lights keep showing up and then going away. EdStgo. Here's a data point: same thing happened to me this morning with my (early) 2018 CR-V. Lots of bings, every warning light turned on, display cycling through "This System Problem" and "That System Problem". Lane Assist and Cruise Control would not work. Gas tank was below 1/4 tank, which is VERY unusual for me.Fuel injector issued is most common occurrence causing Emission System Warning, although without having the exact trouble codes from the ECU it could be something else. Happily, if it is the …Nov 16, 2022 · Emission system problem on 2018, 2019, and 2020 Honda Pilot. Stalling, poor acceleration, hesitating, and rough idleness are all symptoms of emission system problems in a Honda Pilot. The check engine light will get illuminated, and you will most likely fail an emission test. There are some causes for this issue. 2017 Pilot, 108,000 mi. Check engine/Emissions System message appeared intermittently for several days 11/21, then all the lights appeared one morning and next day flashed my D light while driving. Private mechanic was able to stop it by replacing my gear shift button panel which had gotten wet and corroded with crumbs over time.The "Emissions System Problem" warning on a Honda Accord typically indicates an issue with the vehicle's emissions control system. It is usually a sign that there is a problem with the emission system or some other related parts in your Honda Accord if the check emissions system light is on. Depending on the issue, it can range from a ...swat4 Discussion starter. 1 post · Joined 2018. #1 · Nov 8, 2018. Transmission system problem light just popped up on my dash. I am a bit worries. Just had the dealer recommend Ed transmission system flush. $420.00. Then the blind spot info system problem light came on. Turned the car off and then on again. Warning lights disappeared.

This time around the vehicle has 90,000 miles and the “emissions system problem” is back. I took it back to Norm Reeves Honda, they pulled codes P0430, P219B, P0304, and P0306, and they referenced bulletin 19-072 to “perform PGM-FI and A/T software updates “and they found the test to have failed. They concluded the fuel …

Emissions systems problem light has been going on and off for about a month now. Honda did extend the warranty to cover this issue to 10 years or 150,000 miles, whichever comes first.2019 Pilot Elite with AWD and EMISSIONS SYSTEM PROBLEM notifications just started a month ago. Inconsistent. Sometimes both show up, sometimes only the EMISSIONS SYSTEM PROBLEM pops up. Weird. Car doesn't drive much differently. Cleaned the MAF. Nothing has changed.A malfunctioning EVAP system, such as a leaking purge valve or damaged canister, can cause the check engine light to illuminate and increase emissions. 5. Leaking or damaged exhaust system. If there's an exhaust leak anywhere in the exhaust system, the warning lights can come on the dash.TEK Rider. 341 posts · Joined 2016. #12 · Mar 31, 2017. For the 1st time we had the "Emissions System Problem" code that came on shortly after a fuel up @ 3,571 miles. They retrieved Code P0456...Performed Evap Test...Failed Test, Smoked Found Leak at Capless Junction and they Ordered a New Capless Part.If you’re in the market for a reliable and spacious SUV, a used Honda Pilot can be an excellent choice. And if you prefer to buy directly from the owner, there are several advantag...Check Details Honda pilot. Bugflector sportwingDeflector oe Rear 1pc protectorAeroskin avs. Honda pilot bugflector ii hood shield 2003Avs aeroskin smoke hood protector Rear bumper scuff scratch protector 2016-2019 compatible with honda2009-2015 honda pilot oem hood air deflector.2018 Ody w Navi/Res transmission/emission warning. Bought this unit used in great condition, but with high miles at 118,000. Service records showed all service was done at a Honda dealership on the recommended schedule. Since we bought it in early 2021, we put about 4,000 miles on it with no issues other than replacing the battery.

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1. Faulty Mass Airflow Sensor. Most Honda Accord drivers suffering from the emission warning light problem discovered that the culprit was a faulty mass air flow sensor. The mass airflow sensor in your Honda Accord is tasked with increasing engine efficiency by ensuring the right amount of oxygen gets into your engine.May 23, 2022 · I saw a lot of posts specifically about the Emissions System Problem message by itself, with the usual result being a fuel injector replacement that's not covered under the 5/60 warranty, but given the specific symptoms and the fact that these two messages appeared simultaneously makes it seem like something else is up. Aug 31, 2018 · 1 Posts. #56 · Dec 8, 2018. I have a 2019 Honda Pilot Touring and it only has 1300 miles on it and the emissions light and AWD engine light came on. I took it to be serviced and they said it was the 02 sensor and replaced it. I picked it up yesterday and drove maybe 20 miles and both lights are back on. Hi My honda insight hybrid also shown these 4 popup message Check emissions system Check brake system Check ABS system Check hill assist system I already changed my 12v new battery twice and sometimes when i remove negative terminal and put it back,when engine start there become normal with no any indicator light shown but the engine jerking and rpm idle unstable...and 1 minute later engine ...Has your furnace pilot light gone out? Don’t panic, it’s a common issue that can be easily resolved. However, there are some common mistakes that homeowners make when trying to rel...Emission control system problems on a Honda Pilot can have numerous possible causes, with the main culprits usually being: 1. Defective oxygen sensors or failing catalytic converters will trigger an emission system warning light on all Honda Pilot models. 2. A fault in the cylinder deactivation system will have … See moreI have a Honda Pilot Touring AWD 2018, 155,000 km. Recently, "Emission systems problem" lit up (it was not blinking), though car was driving perfect. … DA: 68 PA: 28 MOZ Rank: 29 Honda Pilot Emissions System Problem: Causes and SolutionsElectric car sales neared 14 million in 2023, 95% of which were in China, Europe and the United States. Almost 14 million new electric cars1 were registered globally in 2023, bringing their total number on the roads to 40 million, closely tracking the sales forecast from the 2023 edition of the Global EV Outlook (GEVO-2023). Electric car sales in 2023 were 3.5 million higher than in 2022, a 35 ...I just had my 2017 Pilot towed to the dealership after it went into limp mode on the highway after flashing "Emissions System Problem" and "Transmission System Problem," flashing the "D" gear indicator, and throwing a CEL. ... a bunch of warning lights would turn on, but the engine idle would be perfectly normal and the transmission …Step 1: Disconnect the vehicle's battery. Locate the vehicle's battery and disconnect the positive and negative battery cables before proceeding. The EVAP canister is attached to an electrical harness. Step 2: Raise the rear of the vehicle. The EVAP emissions control canister is located on the driver side, near the rear tires.Honda Pilot P0420 Code Symptoms. The P0420 code in a Honda Pilot 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. ….

I am new to here, sharing some info to you from dealership today: I was struggle to pay $1,100 due to common emission issue on 2016 Honda pilot, the issue is with me over 1 year. This morning I got code came back so decided to fix and pay (searched all forums), but was surprised that Honda covers it based on extended warranty.Honda pilot light maintenance reset requiredEmissions system problem -- check engine light Honda maintenance americanwarmoms blinkingSolved: 2011 honda pilot indicator lights...coming up off. Tapatalk emissions problem2011 honda pilot malfunction indicator 2009 honda pilot check engine light blinkingAmericanwarmoms oil.Oct 25, 2022 · Known problem, likely caused by a bad injector. If the vehicle hasn't thrown a "Cylinder Misfire" message then you can fixed this by putting some fuel system cleaning fluid in your gas tank, if you got a cylinder misfire message and the vehicle has gone into limp mode then the injectors and the fuel rail need to be replaced by the dealer. Emission system most problem occurs because of fuel injectors. The primary purpose of fuel injectors is to provide oil to the engine cylinders at high pressure. If anything happens, it won’t be able to give enough gasoline to the engine. To minimize emissions and maximize the car’s gas mileage. The air-to-fuel ratio is essential, and EFI ...2016 Honda Pilot Touring (Canadian) Steel Sapphire with Tow package, Running Board (lighted)Honda clarity emissions system problems An Emissions System Problem message on your dashboard is a common problem on Honda Pilot cars, which generally can be fixed by changing your fuel injectors. The warning message usually shows around 40,000 - 60,000 miles, and sometimes even earlier.2020 CRV EX-L emission problem warning on info display and engine problem light have been on since around May, I took it to Tameron Honda in Birmingham Al in May, it's now August and I am still waiting for the part. Tired of engine light being on and having to clear info display every time I start the car.I started my car today and received a warning that there is an emissions system problem and my power may be reduced. The check engine light is also on. ... 2018 Accord Touring 2.0T/10AT Crystal Black/Ivory 2017 Audi A4 White/Gray ... 2007 Honda Civic 2006 BMW 530i 2002 Lexus RX300 2002 Cadillac Escalade 1997 Chrysler Sebring 2002 Mercedes E320 ...There is a problem with the emissions system on the 2017 Honda Pilot. The problem is that the system does not work properly and emits too much pollution into the air. This is a serious problem because it can cause health problems for people who breathe in the polluted air. The 2017 Honda Pilot has been having some issues with its emissions system."Emission system problem" is just fancy talk to say a Check Engine Light is on, so it should be treated the same as a Check Engine Light normally would be. The Fleet: Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 110k miles - Bought brand new in August 2006, never any major repairs, possibly the most reliable Odyssey on the road 2018 honda pilot emissions system problem light, Especially if the engine is of the turbocharged variety. A problem like this can have many mechanics chasing ghost. Eventually surrendering to throwing parts at it. Hoping and praying the light and message goes away stays gone. For a better understanding of how the PCV works in a turbo engine application. Why it would cause an emissions light ..., Honda accord: component location index 2018 honda accord emissions system problem How to reset oil life in honda accord from 2018 to 2023 #accordhybrid # Honda emissions system problem. ... 2016 honda pilot emissions system problem., Perhaps your air filter needs replacing or cleaning. If your diagnostic results point to a faulty oxygen sensor, replacement or cleaning might be in order. Oxygen sensors are crucial for regulating your car’s fuel-to-air ratio. Faulty readings can disrupt this balance, leading to inefficiency and increased emissions. , Honda CR-V 2007-2011; Honda Pilot 2009-2015; Toyota RAV4 2006-2012; Ford Escape 2013-2019; ... the computer illuminates the "Check Engine" light. Purge valve problems ... This car had a "Check Engine" light on the dash. We had it scanned and got the code P0446 - Evaporative Emission Control System Vent Control Circuit Malfunction. We tested the ..., My 2017 Honda Pilot, 63,0000 malfunction indicator light set a diagnostic trouble code that stated emissions system problem. I took it to dealer … DA: 44 PA: 4 MOZ Rank:, Q. I own a 2016 Honda Pilot with roughly 45,000 miles. Yesterday the check engine light came on with a message that read “Emissions Systems Problem.” I went to a […], Worst 2018 Honda Pilot Problems #1: Shift Flair, Transmission Slipping 2018 Pilot Average Cost to Fix: $3,600 Average Mileage: 21,000 mi. Learn More #2: Driver Side Seat Belt Is Too Short 2018 ..., The main causes of Emission System Problem in your Honda Pilot are faulty catalytic converter, defective oxygen sensor, faulty fuel injectors, clogged air filter ... it will trigger an emission system problem light on the dash. Generally, the warning notification appears on the dashboard at around 40,000 to 60,000 miles. However, defects within ..., Anonymous, WV (2018 Honda Ridgeline RTL 3.5-L V6) Other minor transmission & clutch problem "After about 45000 miles I noticed a surging in the engine at takeoff while in lower gears., "Emissions System Problem" after extremely cold weather Hi guys, I got that there is already a post here entitled "Emissions System Problem. Power May Be Reduced. See Your Dealer." But this is a different issue that I would like to share. I use my 2018 Accord LX to commute, bought it in Nov/2018 and it has 2k miles., Component Name: 110000 ELECTRICAL SYSTEM. Make: HONDA. Model: PILOT. Year: 2018. Date Added: 01-24-2023. Summary: Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2018 Odyssey, Pilot, Ridgeline with a customer complaint of the vehicle running rough or in low power mode with the Malfunction Indicator Light (MIL ..., "Emission system problem" is just fancy talk to say a Check Engine Light is on, so it should be treated the same as a Check Engine Light normally would be. The Fleet: Bolt - 2006 Honda Odyssey - EX - Ocean Mist Metallic - 110k miles - Bought brand new in August 2006, never any major repairs, possibly the most reliable Odyssey on the road ..., How to change fog light bulbs 09-15 honda pilot. Emissions system problem honda pilotEmissions light honda pilot Pesky emissions lightHonda emissions system problem. 2017 honda pilot check emissions light on: 10 complaintsEmissions system problem honda pilot 2017 Pesky emissions lightMultiple dash lights on and various systems problem., Jul 24, 2020 · 4 posts · Joined 2020. #5 · Feb 19, 2020. Sitting in honda dealership right now with my 2018 crv that has an emissions problem code displayed with the check engine light on. Service tells me they can run the code and get an idea of what is wrong or run a full diagnostics, but if they can't replicate the problem I will have to pay $99. , The 2016 Honda Pilot has 1 problems reported for emission system light on. Average failure mileage is 38,000 miles. CarComplaints.com : Car complaints, car problems and defect information, 2020 CRV check engine light- Emissions System Problem. Just got back from grocery shopping. On the way to the store I got a check engine light pop up that says "Emissions System Problem". My car only has 20,271 miles and I've brought it in for all of the schedule maintenance checkups at the dealership where I bought it., I have a 2016 pilot and have had so many electrical issues including all those mentioned here. They replaced the stop/ start button in 2022 which fixed some problems but the latest problem is that when I turn the car off it goes into accessory mode, where it remains until the battery dies., What does the emissions system problem mean on my Honda Pilot? You may have noticed a warning light in your instrument cluster after receiving an emissions system problem alert as a Honda Pilot owner. So what does this alarm signify? , 69 posts · Joined 2016. #1 · Feb 12, 2018 (Edited by Moderator) 2016 MDX Sh-AWD Adv/Enter 41K miles. Just now, the dashboard reads "Emissions System Problem". Checked the gas cap & it's fine. I filled up the gas today and I'm really good about tightening to hear the click. Other than the recent big snowstorm, I'm not aware of anything unusual., Honda Pilot Emissions System Problems. Many drivers report that their Honda Pilots develop emissions system problems. This is particularly common in more recent model vehicles including the 2016, 2017, 2018 and 2019 models. Drivers report that their emission systems warning light will come on while driving., Web over the years, the emissions system problem has been strangely linked to honda pilot vehicles, particularly the 2016, 2017 and 2018 models. Check Details emission system problem honda pilot 2016 calandradeary, 2016 2017 2018 honda pilot right passenger dash airbag w/o cover rh oem. ... 2016 -18 honda pilot driver side steering wheel airbag for sale onlineHonda pilot emissions system problem sees drivers replacing fuel 2016 ford f150 driver seat replacementTg7 airbag a31. ... Pilot honda airbag 2003. Airbag light on due to faulty passenger seat mat ..., Automatic transmission. 220 miles. I am very upset, less than 2 week old CRV EXL emissions system problem / check engine light came on. - Alex A. , Milpitas, CA, US. Maximize. The 2017 Honda CR-V ..., The average cost for a Honda Pilot Emission System Diagnosis & Testing is between $44 and $56. Labor costs are estimated between $44 and $56. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed. For a more accurate estimate based on your location, use our Fair Price ..., This week my 2018 Clarity started displaying "Emissions System Problem" on the dashboard. It also displayed the check engine light. The ICE would kick in frequently even when I didn't "ask" for it. I took it to Honda and they diagnosed a bad cell in the 12 volt battery which they replaced under warranty. They mentioned that a weak battery can ..., 2018. If Your check emissions system light turned on in Your 2018 Honda Accord that usually means that there was a problem detected with the emissions system. It can be something as simple as a small vacuum leak, all the way up to problems with Your catalytic converter. To get a better idea of what is wrong with the car You should attach an OBD ..., This morning when we tried to start the car, we noticed that there's a warning message "Check Emission System" and the Engine Light is on. We started Googli..., 2018 pilot p2652 rocker arm 3rd time broke down. Amber C; Jul 24, 2022; ... LOOKING FOR TSB ON 2016 HONDA PILOT EMISSION SYSTEM PROBLEM. Taylo9af; Jul 12, 2019; 0 2K Jul 12, 2019 ... pilot tail light 04-041. jctatman; Sep 2, 2004; 3 3K Apr 8, 2010. by ..., 2019 RTLE with 44k on it. One day I got the dash lights on saying Emission and 4-wheel drive system problems. After a few hours the 4-wheel drive system message went away. A day later the emission code went away. A few weeks later they both pop up again. The third time I went to the local Honda dealership but both codes had gone off., I'm currently at the dealer (Bernardi Honda in Natick, MA) with my wife's 2016 EX-L w/Honda Sensing 4dr SUV AWD (3.5L 6cyl 6A) with ~41,500 miles on it. Which has an intermittent "Emissions System Problem" message. I pulled the following codes off of it: P0430 - Powertrain. Catalyst System Efficiency Below Threshold (Bank 2), 2016 Pilot EX-L AWD with about 144k on the clock. Got the "Emission Systems Error" in early November. It popped up for maybe 3 or 4 drives, and then it went away. Took it to my local Honda dealer. They checked the code and based on the code, they applied a software update and checked the compression on all cylinders., This is so weird. My bone stock- never modded- 2018 Type R made a loud flapping noise and whistling howl when I started it up this afternoon. And had the same two messages as yours- emissions system and rev match. I turned it off immediately. Started it again. No weird sound. Same two service messages. Drove it 25 miles. Stopped., "Honda Check Engine Light - Learn about the causes and solutions for a check engine light (CEL) on a Honda vehicle. The CEL can indicate issues with the engine or emissions system and can be caused by a variety of problems. A certified mechanic can use diagnostic tools to read the vehicle's diagnostic trouble codes (DTCs) and determine the specific issue causing the CEL. Common causes include ...