Honda pilot vtm-4 light on and check engine light

The VTM-4 light indicates that the torque management system is active, allowing the Honda Pilot to drive across difficult terrain. It could also indicate an issue with the VTM-4 system, but in many cases, this light doesn’t indicate that anything is wrong other than the system is activated.

Mechanic for Honda: Andrew. This rough startup is possibly what triggered the lights to set a fault. And yes even if you just leave the gas cap loose it will turn on both the VMT-4 and engine light. Ask Your Own Honda Question. well the gas cap wasn't loose since the lights came on when the tank was nearly empty.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...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.VTM VSA Check engine lights are on. I started my 2010 Pilot EX-L this morning for a second time and the VTM, VSA and Check Engine lights all came on. I drove about a quarter mile and turned it off and sat for about 2 minutes. When I started it back up only the check engine light stayed on. I drove it about 25 miles to work and the light …Birdman78. 1 post · Joined 2022. #4 · Feb 1, 2022. A common reason for the VTM-4 Light (and inability to activate ECO Mode) is a bad rear-bank (bank 1) oil pressure sensor. This happened to my vehicle at about 60,000 miles. You can order a new OEM one for less than $40. Antonio Ramon.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 misfires will cause the VTM-4 light and as soon as the engine starts to correct itself the VTM-4 light went out and eventually check engine light too.Original owner; 2013 Pilot 4WD ~80k miles. Oil is clean & full. The CEL & VTM-4 light randomly came on with code P3400. The car feels low on power and shudders above 55 mph. The ECO light also doesn't turn on anymore. I did a quick search and this seems to be a code for an oil pressure switch on the firewall-side of the engine that …May 27, 2007 · 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.

Plane engines are so reliable, most pilots go their entire careers without experiencing a major issue. All pilots can deal with just about any engine problem that may occur. One of...My 2011 Pilot (Model: EXLN with 100k miles) "Check Emission System" light is on then soon after the "VTM-4" & "VSA" also turn on? I changed gas cap but no change so I had OBD Codes checked and was told that the following codes came up: 83-1 ABS Engine Control, P3400 ?, P0302 Cyl 2 Misfire, P0304 Cyl 4 Misfire, and P0300 …What Causes the VTM 4-Light To Come On? It is important to remember that a steady VTM-4 light in and of itself is only indicative of you using the VTM-4 system.Quick explanation on how to fix a 2003 Honda pilot with a VTM and check engine light onVTM-4 Light. Check Engine Light (P0325), and TPMS light are all on. All have been on for months and vehicle runs - Answered by a verified Mechanic for Honda. ... I have a 2005 Honda Pilot with 188K miles. The VTM-4 light came on on the dash as well as the engine symbol. A couple of times in the past week, the engine has idled roughly …

Mar 8, 2013 · 1 post · Joined 2009. #19 · Apr 15, 2013. Same thing happened to my wife's 2009 Honda Pilot this past Saturday. I turned the ignition and immediately the Engine light came on and started blinking, then the VTM and VSA lights came on shortly thereafter. Besides that I could feel the engine wasn't running smoothly. SOURCE: the check engine lights and vtm-4 lights of my 2003 honda pilot alway stays on after i went for an automatic car wash. and after a day or two mostly if i ran it on the higheay check engine and vtm-4 l Apparently what has most likely happened is you were on a wet or ice road and may have lost traction on the road. You may have never …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 …My 2013 Honda Pilot Ex-L had the engine light and VTM light comes on periodically. I also notice when the VTM light comes on wheels feel tighter. ... Check engine ...

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Customer states CHECK ENGINE LIGHT on/flashing, VTM-4 light on, VSA light on, check and advise, runs rough, hesitates. Performed diagnostics. Found code P0303 to be stored. Begin flow chart for diagnostics. Swap coil pack. Recheck. Recode P0303. Swap fuel injector. Reassemble and recheck. Recode P0303. Replace spark …Contents. What is VTM-4 on a Honda Pilot? Causes of Check Engine Light and VTM-4 Light to Come On. Low engine oil. Gasket problem. Oil pressure sensors. Rocker arm oil pressure switch. Exhaust gas recirculation valve problem. Expired transmission fluid. Bad idle air control valve. VTM-4 Oil Temperature Sensor.HONDA MOTOR CO. LTD.DL-NOTES 2022(22/25) (US438127AA08) - All master data, key figures and real-time diagram. The Honda Motor Co. Ltd.-Bond has a maturity date of 3/10/2025 and off...The price of a new car is always a major consideration for potential buyers. When it comes to the new Honda Pilot, there are several factors that influence its price. Understanding...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.

VTM-4 and check engine light N Jay-I had the exact thing happen yesterday as I was leaving the grocery store. Driving at slow speed, the VTM-4 light and the check engine light came on at the same time. Nothing seemed to change with the car. I am taking it in for an oil change on Wednesday and my oil change light has been on for a couple of days.Step 3: Engage the VTM-4 System. Once you’ve located the VTM-4 button, press it to engage the VTM-4 system. You will notice the VTM-4 LOCK indicator light up on your dashboard, indicating that the system is now active. It’s important to note that the VTM-4 system is designed to function in automatic mode under normal driving conditions.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.Another common reason the vtm 4 honda pilot light may illuminate is electrical issues. If your Honda Pilot has an electrical fault, the VTM-4 system may …Mar 8, 2013 · 1 post · Joined 2009. #19 · Apr 15, 2013. Same thing happened to my wife's 2009 Honda Pilot this past Saturday. I turned the ignition and immediately the Engine light came on and started blinking, then the VTM and VSA lights came on shortly thereafter. Besides that I could feel the engine wasn't running smoothly. The check engine light on My '06 pilot will flash with the first start-up of the day, after that is just stays on, no flashing. Sedolmy, the VTM-4 light will come on. Driving is smooth with no issue, all issue are at the initial start up and causes the vehicle yo vibrate. I got misfire codes and replaced all the spark plugs, but still having an ...210. 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 …Feb 23, 2011 · 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. 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 …Mechanic for Honda: Andrew. This rough startup is possibly what triggered the lights to set a fault. And yes even if you just leave the gas cap loose it will turn on both the VMT-4 and engine light. Ask Your Own Honda Question. well the gas cap wasn't loose since the lights came on when the tank was nearly empty.Step 8: Start the Engine. With the negative terminal reconnected, it’s time to start the engine. Insert the key into the ignition, turn it to the “on” position, and then start the engine. Observe the instrument cluster for the VTM-4 light. If the reset was successful, the light should no longer be illuminated.So my 07 Honda Pilot Check engine light and V-4 light came on at the same time. The code P0301 came up. (Cylinder 1 Misfire). Also, the code reader says battery voltage malfunction. The car has been running a little rough lately. It also hesitates a bit to start up every now and then.

Cheek Engine and VTM-4 Light 2009 Pilot. 2009 Honda pilot, Will be driving and then out of no where it stalls out, turn it off then try to restart and it turns over but stalls out again and again. Let it sit for couple hours then starts with rough idle and the cheek engine and VTM-4 light come on.

How Can I Diagnose The Check Engine & Honda Pilot VTM 4 Light Problems? A VTM-4 control unit maintains a log of the last 7-8 errors or trouble codes. They can be scanned or read with an OBD-I or …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.My 2009 Honda Ridgeline RT occasionally displays the yellow Check engine, VTM-4, VSA and traction control warning diamond lights a few seconds after starting. All the lights turn on at once but there … About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... The check engine light is a common feature in most modern vehicles. It serves as a warning system, alerting drivers to potential issues with their vehicle’s engine or emissions sys...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 …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, …Nov 11, 2023 · The VTM-4 light on your Honda Pilot indicates an issue with the vehicle’s four-wheel-drive system. It could be a failure of one of the components, such as a stuck solenoid, an internal filter blockage, or a malfunctioning sensor. It can be frustrating to see a “VTM-4” light illuminated on the dashboard of your Honda Pilot, especially if ... 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.

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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.1. The engine light first flashes 2. Engine lights then becomes steady and stays on 3. VTM-4 light comes on and stay I am going to take it to dealership on weekend but I need to know what the hell went wrong . Mine is 07 certified Honda Pilot EX-4WD that I bought last year June and still in warranty. The mileage is approx (35K).If the VTM-4 light is staying on continuously despite normal road conditions, you might have accidentally hit the VTM-4 LOCK, which will keep it on no matter the conditions. You shouldn’t drive with the VTM-4 LOCK on unless you need it. To turn it off: Step 3: Stop the engine. When you restart your car and shift into drive, the light should ...To reset a check engine light yourself, disconnect the car battery, then turn on the headlights for a few minutes to drain the remaining energy and cause a hard reset. Finally, rec...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.Feb 23, 2011 · 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. On our 2004 Honda Pilot the check engine light is on all the time - but it seems to run fine. Now the VTM-4 lite come on after driving for about 1 minute. Tested the traction on a snowy hill today and with the VTM-4 light on it did indeed slip as if the rear wheel drive was disengaged. I restarted it and the VTM-4 light was off so I put it in ... ….

Apr 14, 2017 · 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]. VTM-4 Engine Light 2015 Pilot. Hi. 2015 Pilot with VTM4 and engine light appeared while driving normally, I believe it is an O2 sensor fault due to no performance issues or anything relating to the engine seems to be occurring. Ran a code reader and confirmed to be O2 sensor with codes P2254 and P0154 (bank2 sensor1).210. 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 ...Usually, they are warnings for periodic maintenance and oil changes. However, they can also mean something is wrong with your Honda Pilot. One such warning light is the VTM-4. We’ll see in this article what the VTM-4 is all about in detail. VTM-4 is Honda’s Variable Torque Management 4-Wheel-drive system. The VTM-4 system controls the level ...Jan 25, 2017 · Check engine light and VSA light I had the same problem on my 2007 Honda Pilot. It ended up being all 6 cylinders "misfiring," VSA light, and ABS sensor logic failure. I used a OBD2 reader to reset the throttle body to idle learn which remedied the check engine light. Hi my Honda pilot 2013 engine light vtm-4 light com continue not stopping wen go high up road it's slipping tire sounds heavy comStep 3: Engage the VTM-4 System. Once you’ve located the VTM-4 button, press it to engage the VTM-4 system. You will notice the VTM-4 LOCK indicator light up on your dashboard, indicating that the system is now active. It’s important to note that the VTM-4 system is designed to function in automatic mode under normal driving conditions.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.La luz VTM-4 indica que el sistema de administración de torque está activo, lo que permite que el Honda Pilot conduzca en terrenos difíciles. También podría indicar un problema con el sistema VTM-4, pero en muchos casos, esta luz no indica que algo ande mal, excepto que el sistema está activado. Si la luz permanece activa mientras conduce ... Honda pilot vtm-4 light on and check engine light, I have a 2003 Pilot with 246,000 km with this problem just starting for me. In my case, the VTM-4 light never comes on from cold and does not usually come on until the engine is warm. It does come on when the engine is warm but the transmission is cold (e.g. remote start in driveway, warming up but not driven… not even shifted out of park)., When the Check Engine light comes on, the VTM-4 (vehicle torque management 4WD system) light is also set, which turns this system off. This is a self-preservation mechanism, in case the reason the Check Engine Light is on can harm or effect the VTM-4 system. So- fix the reason why the Engine Light is on, and the VTM-4 …, So after filling it up it still was running rough, only when you came to a stop did the putter start (like it was going to die). The check engine light came on then a few seconds later the vtm4 light came on. It has only died on us a couple times, but when your at a light it sure feels like it is. She had to keep one foot on the brake and gas ..., 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., A misfire can cause both of those symptoms. Have it checked with a scanner. The VTM-4 light could indicate that the all wheel drive is disabled due to the misfire. The computer puts the vehicle in "limp-mode", shutting down any power to the rear wheels for less stress on the malfunctioning engine. This is from my own direct experience., According to the owner's manual, a flashing VTM-4 warning light on a Honda Pilot means that you should immediately pull over, slot the transmission into Park, and let the engine idle until the VTM..., My wife reports that the engine light is on all the time today, but the VTM-4 will not come on for a few minutes, then it stays on as well. ... both the Check Engine and VTM-4 lights came on. 76k on the odo of the '03 Pilot, already went in for the transmission recall about a year ago (they didn't replace, just put the oil package in it ..., On our 2004 Honda Pilot the check engine light is on all the time - but it seems to run fine. Now the VTM-4 lite come on after driving for about 1 minute. Tested the traction on a snowy hill today and with the VTM-4 light on it did indeed slip as if the rear wheel drive was disengaged. I restarted it and the VTM-4 light was off so I put it in ..., The VTM-4 light on your Honda Pilot indicates an issue with the vehicle’s four-wheel-drive system. It could be a failure of one of the components, such as a stuck solenoid, an internal filter blockage, or a malfunctioning sensor. It can be frustrating to see a “VTM-4” light illuminated on the dashboard of your Honda Pilot, especially if ..., B. becker Discussion starter. 1 post · Joined 2016. #1 · Mar 22, 2016. 2013 Honda Pilot VTM-4 light & check engine light came on with no difference in driving performance. Dealer check said a P3400 VPS Stuck off on B1 is the issue & a sensor has to be replaced. It's on order & it's been 5 days & I haven't seen the lights come on since., 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 …, VTM-4 and VSA will turn off as a precaution for many engine codes. Most likely, the P2138 is the root cause. The accelerator pedal is connected via a Bowden cable to an accelerator pedal position sensor assembly under the hood. This device contains two potentiometers that measure how far the accelerator pedal is being depressed., 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. , May 1, 2010 · Customer states CHECK ENGINE LIGHT on/flashing, VTM-4 light on, VSA light on, check and advise, runs rough, hesitates. Performed diagnostics. Found code P0303 to be stored. Begin flow chart for diagnostics. Swap coil pack. Recheck. Recode P0303. Swap fuel injector. Reassemble and recheck. Recode P0303. Replace spark plug cylinder #3. Recheck ... , 3,221. Feb 15, 2021. #1. Original owner; 2013 Pilot 4WD ~80k miles. Oil is clean & full. The CEL & VTM-4 light randomly came on with code P3400. The car feels low on power and shudders above 55 mph. The ECO light also doesn't turn on anymore. I did a quick search and this seems to be a code for an oil pressure switch on the firewall-side of the ..., Quick explanation on how to fix a 2003 Honda pilot with a VTM and check engine light on, Therefore, it’s crucial to pay attention to the VTM-4 light and take appropriate action if necessary. If the light remains on, it’s recommended to take your Honda Pilot to a certified mechanic to diagnose and fix the issue. Causes of the Honda Pilot VTM-4 Light On 1. Faulty Engine Sensor. One of the causes of the VTM-4 light …, 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., 2014 check engine and vtm-4 light. Okay so my mother-in-laws car popped the P3400 code a few weeks ago with the check engine and vtm-4 lights both on so I replaced the front oil pressure sensor which I read was the issue for the P3400 code and now I put about 400 miles on the car and both lights have come back on and the car …, 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?, Question type: Maintenance & Repair. I need help please. I just purchased my 2013 Honda Pilot and the engine light and traction light came on. I am being told that there is a random misfire on bank 1. It appears they adjusted the valves. Then when checked again they detected bank 2 cam out of time by 1 tooth. can you explain to me …, Nov 5, 2012 · while driving all three lights i.e. vtm-4, vsa and engine came on. no problems to the car while driving. ECO mode does not come on beacuse the engine light is 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 …, 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 ... , 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 ..., 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., 04 pilot. Temp sensor in the rear differential is bad causing the vtm light to come on. New sensor and rear diff fluid change. Engine oil does not affect this light nor does any sort of gasket. Like. (9) Bill Martin March 8, 2022. My pilot had that code and it was the variable timing pressure switch., 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.Hope this helps you understand the light., 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 ..., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., Tuesday I took the day off of work and changed the VTM-4 fluid and transmission fluid. It had been about 40k on the transmission, and I had never personally changed the VTM-4 fluid; had the truck for 41k miles. The VTM-4 fluid looked pretty bright red when I changed it. Nothing surprising and not much in the way of metal shavings on …, Four-Wheel Drive (VTM-4). Automatic system on and off times. If it activates, it indicates that your car has less traction at that specific time. The VTM-4 light typically causes little concern. It only indicates that your torque management system is at work to make up for poor driving circumstances., 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.