Honda pilot vtm-4 light on and check engine light

Here’s what you can do to try and remedy the issue: 1. Resetting The System: When the Pilot’s computer notices inconsistencies with its VTM-4 system, it …

2.8K views 9 months ago. Quick explanation on how to fix a 2003 Honda pilot with a VTM and check engine light on ...more. Quick explanation on how to fix a …Honda Motor News: This is the News-site for the company Honda Motor on Markets Insider Indices Commodities Currencies StocksThe VTM-4 (Variable Torque Management 4-wheel drive) light is a warning indicator found in Honda Pilot SUVs that have the four-wheel drive capability. If the light is illuminated, it indicates a problem with the VTM-4 system. Some of the symptoms that may be observed when the VTM-4 light in a Honda Pilot comes on include a reduction in traction ...Dec 14, 2023 · This time the VTM4 light came on with the engine light sign. I was freaked out but I drove it to the mechanic and he scanned it for code but VTM4 light didn't came back. He asked me to drove it around for a little to see if the VTM4 will come back but it didn't. another issue I forgot to mention is I noticed when the car on a stop and I push ... What is the cause of a VTM-4 and VSA lights on in a honda pilot - What is the cause of a VTM-4, ABS and VSA lights on in a honda pilotMove the shift lever to D or D .3. Turn the ignition to LOCK (0).The VTM-4 Lock will temporarily disengage when the vehicle speed exceeds 18 mph (30 km/h). It will automatically engage again as the speed slows below 18 mph (30 km/h). The button light will remain on.Hope this helps you understand the light.Check engine and VTM 4 light on - code reads O2 sensor in need of replacement. My 2008 Pilot (121k miles) just had the check engine light come on yesterday so I went to autozone and had them read the code, and they said the oxygen sensor is …

Jan 4, 2024 · The VTM-4 light indicates that the torque management system is active, allowing your vehicle to drive across difficult terrain. However, it could also indicate an issue with the VTM-4 system. The check engine light indicates that there is a problem with your vehicle’s engine or emissions control system. 2005 Honda Pilot VTM-4 warning light and error out fix. Amazon Part AC 4160-PGJ-003 fixed my issue. As of 03-31-2021 the VTM-4 light has not come back on.....I looked at the speedo and noticed the VTM4 and VSA lights were both on. Also there was a lighted triangle icon with an unknown symbol in it that was on above the VTM4 light. The vehicle accelerated very sluggish like the emergency brake was on and the vehicle would not rev above 1500 RPM. The engine had no power and the vehicle …155 posts · Joined 2022. #1 · Jul 23, 2022. So I was just casually driving last night and my VTM4 & check engine lights came on at the same time. I have DTC codes P0135 H20 sensor bank 1 sensor 1, P0155 H20 sensor bank 2 sensor 1, P1298 electric load detector circuit high input, P0498 Evap emissions system vent control valve circuit low.A look at what happens in the pilot's simulator check every six months. As athletes currently competing at the Olympics in Tokyo will no doubt agree, if you don't practice a skill,...2004 Honda pilot vtm-4 problem the truck won't get out of low gear the vtm-4 light and engine light came on 4 Answers. Engine light and vtm-4 light came on and the truck won't come ok ut of low gear does anyone know what this is

Oct 29, 2019 · 4,099 POSTS. Hello thanks for using 2CarPros. the vtm is the variable torque management system. The check light means there's a diagnostic trouble code stored in the computer. You can stop by pretty much any parts store and they will scan the computer for free. This will give you direction on figuring out what's wrong with it. 2009. Your 2009 Honda Pilot is designed to disable a Variable Torque Management 4WD System (VTM4) in case there is a problem with engine operation. When You have a check engine and VTM4 light on, this will usually indicate a problem with an engine. You need to resolve the engine faults, and the VTM4 system will usually restart …I looked at the speedo and noticed the VTM4 and VSA lights were both on. Also there was a lighted triangle icon with an unknown symbol in it that was on above the VTM4 light. The vehicle accelerated very sluggish like the emergency brake was on and the vehicle would not rev above 1500 RPM. The engine had no power and the vehicle …Check Engine Light and VTM-4 light. ... (about 35 miles) and alerted me to the Engine check light having come on as well as the VTM-4 warning light (not the light in the VTM-4 engage button). ... Piloteers.org forum community offers tech info, troubleshooting, modification DIY’s and discussion for the Honda Pilot SUV. Show Less …I have been having issues with Check Engine light and VTM-4 light coming on and off and searched the forum and found threads on EGR valve. Took my '03 (27,000 40 months) to the dealer. ... troubleshooting, modification DIY’s and discussion for the Honda Pilot SUV. Show Less . Full Forum Listing. Explore Our Forums. 2016-2022 …It would only turn off if the engine was turned off. Started up and drove a few miles, and the VTM-4 light came on again. Also the "check engine" light came on, so there is more afoot here. Engine seems to be running fine. Recently purchased the Pilot, it has 331,000 miles and is in very good condition.

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Quick explanation on how to fix a 2003 Honda pilot with a VTM and check engine light on210. Guru9ZJKLR answered 3 years ago. VTM-4 light was on on my 2008 honda pilot 4wd a few weeks ago i did a radiator replacement due to a massive leak of transmission fluid,it seems that the radiator is related to the pressure of the transmission fluid, long story short a few days later my VTM-4 light came on and every time i stop on a light or ...Had a VTM-4 light as well as a. Moose, hi. 2010 Honda Pilot. Had a VTM-4 light as well as a check engine light come on. Upon research, it appears that a faulty EGR valve is often the cause. I have replaced the EGR valve but still have the VTM-4 and Check engine light on. Any idea what I should investigate next?Vtm americanwarmomsHow to reset maintenance light on 2007 honda pilot 3.5 liter Lights americanwarmoms vtm indicator2009 honda pilot check engine light blinking. Honda pilot vtm 4 and engine light onPilot honda light reset Honda pilot vtm 4 and engine light onPilot reset. Check Details Check Details. Pilot VTM-4, ABS lights …How to diagnose the check engine and VTM-4 light issue? The Honda Pilot system has a VTM-4 control unit that keeps records of the last 7-8 faults or trouble codes. You can …

Here’s what you can do to try and remedy the issue: 1. Resetting The System: When the Pilot’s computer notices inconsistencies with its VTM-4 system, it …Below we have highlighted the most common causes of a check engine light. Loose Gas Cap: Your gas cap is loose, broken, or simply missing. Gas cap issues can reduce fuel pressure and allow fuel vapors to escape, reducing fuel economy and increasing harmful emissions. Failing Catalytic Converter: Your catalytic converter can eventually clog with ...I have a 2012 Honda Pilot, check engine light is flashing, I have a 2012 Honda Pilot, check engine light is flashing, engine is running rough, vtm-4 light is on and traction control light on. I am on vacation, it was fine yesterday morning and after a drive last night all this happened. Mechanic's Assistant: What happened right before the check ...What does the Honda Pilot’s check engine light signify? A constant glow normally denotes something less serious, but a check engine light that flashes suggests your car’s engine is seriously damaged and needs quick repair. We strongly advise against driving if the check engine light is blinking on your Honda Pilot.It would only turn off if the engine was turned off. Started up and drove a few miles, and the VTM-4 light came on again. Also the "check engine" light came on, so there is more afoot here. Engine seems to be running fine. Recently purchased the Pilot, it has 331,000 miles and is in very good condition.Honda’s new goal is to achieve 100% EV sales in North America by 2040 as part of its broader target of being carbon neutral by 2050. CEO Toshihiro Mibe announced the planned shift ...Then you stop the car and stop the engine. Restart the car then the engine light stays on, but not vtm-4 light. vtm-4 light comes on when you drive for 20 to 30 minutes and only when press the break. If you donnt press the breack then vtm light don't come on. Any one has an answer. [email protected] luck trying to buy a Toyota, Kia or Honda. These auto brands have the lowest supply of cars available for sale at dealerships now. By clicking "TRY IT", I agree to receive new...

Press the VTM-4 Lock button. 2. Move the shift lever to D or D . 3. Turn the ignition to LOCK (0). The VTM-4 Lock will temporarily disengage when the vehicle speed exceeds 18 mph (30 km/h). It will automatically engage again as the speed slows below 18 mph (30 km/h). The button light will remain on.

1 post · Joined 2016. #6 · Mar 15, 2016. I have a 2006 pilot with 132K miles. In have had the intermittent check engine light and VTM-4 lights as well. Had my codes read at an auto parts store. It was misfiring on all cylinders and i got a P0175 Fuel system too rich (bank 2). Tried dry gas and fuel injector cleaner.The Snake ransomware is believed to be the cause. Honda has confirmed a cyberattack that brought parts of its global operations to a standstill. The company said in a brief stateme...Had a VTM-4 light as well as a. Moose, hi. 2010 Honda Pilot. Had a VTM-4 light as well as a check engine light come on. Upon research, it appears that a faulty EGR valve is often the cause. I have replaced the EGR valve but still have the VTM-4 and Check engine light on. Any idea what I should investigate next?Caused a check engine code 3 & 5 cylinder misfires. VTM-4 light was on for a day or so, check engine light was on for 3 days or so. All's good now!:29: Apparently the …2009. Your 2009 Honda Pilot is designed to disable a Variable Torque Management 4WD System (VTM4) in case there is a problem with engine operation. When You have a check engine and VTM4 light on, this will usually indicate a problem with an engine. You need to resolve the engine faults, and the VTM4 system will usually restart after this.Top Answer. Tina S. December 31, 2020. Your 2009 Honda Pilot is designed to disable a Variable Torque Management 4WD System (VTM4) in case there is a …The light appears to come on when the engine revolutions are declining, e.g. coasting to a stop, or when transmission shifts up and revolutions drop, or when coming up behind a slower moving vehicle and letting up on the gas. The light comes on whether the gas tank is full or near empty.An OBD-II reader will do just that- read OBD-II codes and nothing more. All the other stuff (like VTM-4, etc) are manufacturer-specific, thus you need a Honda-specific scanner for that stuff. Basically, if you get a Check Engine light, an OBD-II scanner (that talks ISO9141 protocol), it'll pull codes for that but nothing else.Our $42k 2015 Pilot has 4600 miles on it and the check engine light it on. Halfway through my 45 mile commute, the light came on and the car felt sluggish and a little shaky. Thankfully I took ...Jan 4, 2024 · The VTM-4 light indicates that the torque management system is active, allowing your vehicle to drive across difficult terrain. However, it could also indicate an issue with the VTM-4 system. The check engine light indicates that there is a problem with your vehicle’s engine or emissions control system.

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The 1969 Honda CB750 changed motorcycling forever. Learn why and see pictures of this groundbreaking machine. Advertisement The 1969 Honda CB750 motorcycle offered a combination of...This morning the battery light and VTM light came on. After parking the car and turning it off, then starting it again the lights were off. ... Honda Pilot 2006 LX 4WD J35A9, bought May 2015 with 108,000 Kms / 67,000 miles. Now 270,000 Kms/ 164,000 miles. ... 1964 Plymouth Valiant (fire engine red & midnight black) Reactions: Fms. Save …Here are the codes and diagnosis: Found code P0305, misfire on cylinder 5. Tested both the spark plug and coil pack then completed compression test. Also found low compression on cylinder 4 130PSI and low compression 5 130PSI. Normal compression should be 170PSI. Low compression most likely due to cylinder ring wear.When driving, and sometimes when parked and idling I get a VSA warning light and warning triangle light. This is followed by a VTM-4 warning light within a few seconds. The vehicle loses power. I stop , shut down and restart, and all is good. This happened 6 times in one day, but then nothing for a week or more.Apr 26, 2020 · Hi . Thank you for asking your question on JustAnswer. The check engine light VTm light and other fault lights comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer. Mechanic for Honda: Dan. It most likely means the sensor is the problem. You can swap the bank 1 and bank 2 sensors with eachother to see if code switches to other bank if so you know sensor is problem if not there is a oil pressure issue. The sensor is problem 95% of time. Let me know if you have questions, thanks.Coils firing. PCV valve changed/new. EGR valve new/clean if 180k+. Use Full synthetic oil. Use Top Tier 87 octane fuel or injector Cleaner. Disable the VCM. Hope this helps. 2017 Pilot EX-L 2wd (60k); (2) 2012 V6 Crosstour 2wd (120k, 311k); 2015 Nissan NV 3500 (211k) aggrex.2004 Pilot, My VTM-4 light and check engine pop up, we changed the VTM fluid and the temperature sensor but now when you start driving for a wile and press the brakes, then the engine lights comes on and VTM- 4 light comes on. Then you stop the car and stop the engine. Restart the car then the engine light stays on, but not vtm-4 light.Sometimes, the VTM-4 light can be activated due to a VTM-4 fluid leak or malfunction in your Pilot. To check for these issues, press and hold down the VTM-4 switch. If you notice that the VTM-4 light is still on even after pressing the switch, it could mean that the VTM-4 fluid has already leaked or is low. To check the VTM-4 fluid level, look ...As I explained when it happened a couple of years ago, after changing spark plugs, the orange VSA warning light /!\ (exclamation mark inside a triangle) came on as soon as I started the engine and remained on. About 30 seconds later, the actual orange-letter VSA light came on and remained on. This happened every time I started the Pilot, … ….

My VSA VTM-4 and check engine light go on but the car drives fine ... code p0172 and p0175 and lights on = vtm=4 , vsa, engine check,,and TRI ANGLE signe. honda pilot 2006,and also cold start and stop , after warmup 0n the road when press brake padle then engine shut do ...Hi . Thank you for asking your question on JustAnswer. The check engine light VTm light and other fault lights comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer.Engine Light Blinking and VTM-4. Hey guys, new to the Honda Ridgeline world. Bought my 07 Ridgeline about 2 weeks ago with 120k on it. Thing checked out good and ran perfect until about 2 days ago. When i start it, it fires right up but idles high and low, and the check engine light comes on ( sometimes flashes, and about half the time the …VTM-4 Light but NO check engine light. Over the past few weeks I've noticed that my truck's VTM-4 light comes on every now and then when I first start it up in the morning. It will stay on until I shut off the engine/turn it back on again, then it typically will not return until the next day. I can even restart it at a stoplight or something to ...Why is my vtm-4 light on honda pilot? Honda pilot check engine light vtm 4 Pilot honda vtm check light engine ridgeline 2004 egr mdx relay 2005 tech possible 2006 clicking stop non start does. Abs, vtm4 lights coming on. Honda vtm ridgeline 2006Honda pilot questions Honda pilot vtm 4 and engine light onWhat causes the …Dec 23, 2023 · When the VTM-4 light is on, it indicates that your Honda Pilot is utilizing its four-wheel-drive capabilities to maintain traction and stability. This typically happens when the vehicle detects slippery or uneven terrain, such as snow, mud, or gravel. The VTM-4 system ensures power is distributed to all four wheels, helping you maintain control ... Jun 8, 2017 · Could be loose/damaged/corroded wiring/plug to a wheel speed sensor or bad sensor, there are other possibilities also. Since the vtm-4, vsa and abs warning light was going on and off, codes should be store which could direct you to the issue. Some of the auto parts suppliers offer free code reading like Pepboys, Nappa, Advanced auto parts,etc ... Coils firing. PCV valve changed/new. EGR valve new/clean if 180k+. Use Full synthetic oil. Use Top Tier 87 octane fuel or injector Cleaner. Disable the VCM. Hope this helps. 2017 Pilot EX-L 2wd (60k); (2) 2012 V6 Crosstour 2wd (120k, 311k); 2015 Nissan NV 3500 (211k) aggrex. Honda pilot vtm-4 light on and check engine light, Hi all new here. Check engine light came on after work few days ago. Car has 156k miles. Vtm-4 and cel came on at the same time. When I went to start it the next day. Vtm-4 light was off. Cel still on. Ran codes. Misfire on all cylinders plus random misfire. Car still running perfectly fine no stuttering that Iv noticed. cleared code., 1 post · Joined 2016. #6 · Mar 15, 2016. I have a 2006 pilot with 132K miles. In have had the intermittent check engine light and VTM-4 lights as well. Had my codes read at an auto parts store. It was misfiring on all cylinders and i got a P0175 Fuel system too rich (bank 2). Tried dry gas and fuel injector cleaner., 1. Loose or bad gas cap. It is possible for the check engine light to come on in Pilot due to a loose or bad gas cap. The fuel system in modern vehicles is designed to maintain a certain level of pressure, and if the gas cap is not sealing properly, it can cause a leak and disrupt the pressure balance in the system., Bad gas could be the cause. I would check the air filter to make sure it's ok and that nothing found a home in the airbox or intake. I would be looking at the air mass sensor. Had a problem with a bad MAF on a different car that threw the same codes. Car ran ok but the light would come and go, then finally stayed on., 1 post · Joined 2016. #6 · Mar 15, 2016. I have a 2006 pilot with 132K miles. In have had the intermittent check engine light and VTM-4 lights as well. Had my codes read at an auto parts store. It was misfiring on all cylinders and i got a P0175 Fuel system too rich (bank 2). Tried dry gas and fuel injector cleaner., Jul 25, 2012 · moonpilot Discussion starter. 3 posts · Joined 2012. #1 · Jul 25, 2012. I have a 2009 Pilot w/ about 64k miles on it. About a year ago the Check Engine/Emmisions system message popped up. the VSA Inop would light intermittently. I took it to my mechanic and he cleared the codes w/ an agreement to bring it back if the warning lights came on again. , Check Engine Light and VTM-4 light. ... (about 35 miles) and alerted me to the Engine check light having come on as well as the VTM-4 warning light (not the light in the VTM-4 engage button). ... Piloteers.org forum community offers tech info, troubleshooting, modification DIY’s and discussion for the Honda Pilot SUV. Show Less …, The check engine light & VTM-4 lights comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer. Faults that can set the check engine light can range from a vaccuum leak, engine mis-fire, low ..., Coils firing. PCV valve changed/new. EGR valve new/clean if 180k+. Use Full synthetic oil. Use Top Tier 87 octane fuel or injector Cleaner. Disable the VCM. Hope this helps. 2017 Pilot EX-L 2wd (60k); (2) 2012 V6 Crosstour 2wd (120k, 311k); 2015 Nissan NV 3500 (211k) aggrex., Check engine light and VTM-4 light coming on my 2003 honda pilot. Just changed the EGR valve, by lights still come - Answered by a verified Mechanic for Honda ... Moose, hi. 2010 Honda Pilot. Had a VTM-4 light as well as a check engine light come on. Upon research, it appears that a faulty EGR valve is often the cause., Check Engine light is on. After a few minutes the RPM's start to fluctuate between 1000-1500 in both Park and Neutral. The VTM Light has come on. Funny thing is when, I turn the A/C on the rough idle stops. VTM light stays on and so does the check engine light. Any ideas in the meantime would be greatly appreciated., Press the VTM-4 Lock button. 2. Move the shift lever to D or D . 3. Turn the ignition to LOCK (0). The VTM-4 Lock will temporarily disengage when the vehicle speed exceeds 18 mph (30 km/h). It will automatically engage again as the speed slows below 18 mph (30 km/h). The button light will remain on., The VTM-4 light indicates that the torque management system is active, allowing your vehicle to drive across difficult terrain. However, it could also indicate an issue with the VTM-4 system. The check engine light indicates that there is a problem with your vehicle’s engine or emissions control system., The Check Engine light comes on with P0300 random/mutiple cyl. misfire detected along with P0301, P0302, P0303, P0304, P0305, P0306 and the VTM-4 light comes on. The engine has a miss while idling and driving until the transmission goes into 2nd gear. After 2nd gear the miss goes away. I have changed out the spark plugs, and the EGR valve., Here are a few things you can try to troubleshoot the issue: Check the VTM-4 switch: Make sure the VTM-4 switch is in the correct position and that it is functioning properly. If the switch is damaged or not working properly, it may prevent the VTM-4 system from engaging. Check the VTM-4 fuse: The VTM-4 system is powered by a fuse., Many engine-related problems will disable the VTM-4 AWD system as a precaution, so you're likely seeing a VTM-4 light as a result of the CEL. Once the cause of the CEL is fixed, the VTM-4 light will likely go off. The CEL is on because something may be causing the vehicle to exceed allowable emission levels., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... , Apr 15, 2023 · Sometimes, the VTM-4 light can be activated due to a VTM-4 fluid leak or malfunction in your Pilot. To check for these issues, press and hold down the VTM-4 switch. If you notice that the VTM-4 light is still on even after pressing the switch, it could mean that the VTM-4 fluid has already leaked or is low. To check the VTM-4 fluid level, look ... , How can the VTM-4 light on a Honda Pilot be turned off? In a Honda Pilot, the VTM-4 system—also referred to as the variable torque management system 4-wheel drive system—is responsible for distributing engine torque to the vehicle’s axle. This system runs automatically and is always on., 7 posts · Joined 2010. #2 · Nov 27, 2010 (Edited) Check engine, VTM Lights and dead battery. Bkgd: Had 100K ext. warranty on my 04 Pilot, did all maintenance at same dealership, good shop. At 95 K they switched owners, fired all the advisers but one and service now SUCKS. 2 weeks ago I hit the brakes, antilock worked and I avoided an …, Honda / By The GearShifters Team. Under circumstances where there is less traction, the Variable Torque Management 4WD System (VTM-4) automatically distributes varying amounts of engine torque to the rear wheels. When your MDX is stuck or is at risk of being stuck, you can use the VTM-4 Lock button to add greater torque to the rear wheels if ..., The check engine light & VTM-4 lights comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer. Faults that can set the check engine light can range from a vaccuum leak, engine mis …, The Check Engine light comes on with P0300 random/mutiple cyl. misfire detected along with P0301, P0302, P0303, P0304, P0305, P0306 and the VTM-4 light comes on. The engine has a miss while idling and driving until the transmission goes into 2nd gear. After 2nd gear the miss goes away. I have changed out the spark plugs, and …, 2-18-15 check engine light/vtm4 EGR Valve remove and replace 159.98 part 72.00 labor new battery 119.99 part 18.00 labor. 2-24-15 check engine light/vtm4 catalytic converter - remove and replace - rear b1, exhaust manifold: part 514.83, labor 243.00. That's all the information I have off the invoices, hopefully that's enough information., Jan 4, 2024 · The VTM-4 light indicates that the torque management system is active, allowing your vehicle to drive across difficult terrain. However, it could also indicate an issue with the VTM-4 system. The check engine light indicates that there is a problem with your vehicle’s engine or emissions control system. , Mechanic for Honda: Dan. It most likely means the sensor is the problem. You can swap the bank 1 and bank 2 sensors with eachother to see if code switches to other bank if so you know sensor is problem if not there is a oil pressure issue. The sensor is problem 95% of time. Let me know if you have questions, thanks., Coils firing. PCV valve changed/new. EGR valve new/clean if 180k+. Use Full synthetic oil. Use Top Tier 87 octane fuel or injector Cleaner. Disable the VCM. Hope this helps. 2017 Pilot EX-L 2wd (60k); (2) 2012 V6 Crosstour 2wd (120k, 311k); 2015 Nissan NV 3500 (211k) aggrex., Check engine and VTM 4 light on - code reads O2 sensor in need of replacement. My 2008 Pilot (121k miles) just had the check engine light come on yesterday so I went to autozone and had them read the code, and they said the oxygen sensor is …, Apr 13, 2021 · Coils firing. PCV valve changed/new. EGR valve new/clean if 180k+. Use Full synthetic oil. Use Top Tier 87 octane fuel or injector Cleaner. Disable the VCM. Hope this helps. 2017 Pilot EX-L 2wd (60k); (2) 2012 V6 Crosstour 2wd (120k, 311k); 2015 Nissan NV 3500 (211k) aggrex. , Many engine-related problems will disable the VTM-4 AWD system as a precaution, so you're likely seeing a VTM-4 light as a result of the CEL. Once the cause of the CEL is fixed, the VTM-4 light will likely go off. The CEL is on because something may be causing the vehicle to exceed allowable emission levels., 788 posts · Joined 2009. #1 · Dec 8, 2009. Just had the little engine icon light up and the VTM-4 light come on at startup. They stayed on. Interesting to note that last Wed. I had my oil/oil filter, air filter, and VTM-4 oil changed. The RL also sputters when slowing down to stop and when stopped but does not stall., Check Engine light is on. After a few minutes the RPM's start to fluctuate between 1000-1500 in both Park and Neutral. The VTM Light has come on. Funny thing is when, I turn the A/C on the rough idle stops. VTM light stays on and so does the check engine light. Any ideas in the meantime would be greatly appreciated., 14580 posts · Joined 2015. #6 · Jan 28, 2021. There are a few reports of the VTM-4 light problem being solved by cleaning (I'd just replace) the EGR valve. May as well clean the EGR ports and passages while you're at it and change the PCV valve. VTM-4 light and new control module.