Hyundai limp mode

Subreddit dedicated to the auto maker Hyundai. Come share news and pictures and discuss everything related to Hyundai. Discussions about Hyundai Group corporate cousin Kia are also welcome, though they should really go in /r/Kia. ... 3.6L auto - stuck in limp mode/accel pedal issue

Hyundai limp mode. Rating: 6.5/10 Note: This rating is based on the first six episodes of the season. If you’re anything like me, several moments from Killing Eve’s third season are seared into your ...

2019 Hyundai Santa Fe 2.4 GDI @ 37k -- Mobil-1 EP 10w30 / Euro 0w40 FrankenBlend 2020 Kia Soul X-Line 2.0 MPI @ 27k ... even if the car isn't in limp mode. But ...

Intermittent abs/traction lights on and sometimes when the abs/dsc light was on the trans would enter failsafe mode and stay in 3rd gear. after rebuilding the module, the issue went away on the transmission as did the abs/dsc issues. Before you do anything, make sure your battery and alternator are operating as required.In an ideal world, when limp home mode activates, you should stop as soon as you can: it is designed to protect the engine and the best way to do this is to switch it off. Limp mode is giving you the stark message: “Pull over or you’re going to damage me.”. Equally, the problem isn’t so serious that the engine has to shut down immediately.Limp mode is activated when the ECU (electronic control unit) notices that something is not operating within predefined parameters, this can be caused by a variety …Sep 28, 2011 · Limp Home Mode activated. I was driving home from work 3 days ago and my Veloster with less than 300 miles on it suddenly decided to go into "Limp Home Mode". I was stopped at a light and when I took off, it had almost no power and would not rev past 3k RPM. I drove it to the dealer and dropped it off for service to look at in the morning but ... Fail Code conditions or “Limp Mode” occurs when there is a problem with the logic of a vehicle’s computer. When the signal value sent by a sensor to the computer is not within a pre-programmed range specified by the manufacturer, it will switch to “secondary” programming. These procedures are designed to protect the transmission from ...Subreddit dedicated to the auto maker Hyundai. Come share news and pictures and discuss everything related to Hyundai. Discussions about Hyundai Group corporate cousin Kia are also welcome, though they should really go in /r/Kia. ... 3.6L auto - stuck in limp mode/accel pedal issue

The p2600 code in a hyundai sonata is related to the electronic control module (ecm) of the vehicle. It indicates a problem with the fuel pump control circuit. This code indicates that the ecm has detected an abnormal voltage reading in the fuel pump control circuit. This can be caused by a damaged fuel pump or a short circuit in the wiring.Jul 4, 2019 · Likes Received: 1. Turtle said: I had the software update done to my 2018 Sonata 2.4 l a month ago. While on vacation my Sonata decided to go into limp mode. It was the knocksenor wiring harness that was the culprit. The factory harness is too taunt and routed too close to body,frame causing a odd frequency to snap the ECM into safe ( limp ) mode. Sep 26, 2016 · Some cars though do put the engine management system into LOS (Limited Operation Strategy / limp mode) when the filter loading exceeds a specific level. I've never had any dealings with DPF faults on Hyundai so I don't know if that's the case on your car. The filter should have been regenerating (self cleaning) on a motorway journey though, so ... Here's a solution: Reinstall his exhaust. It's probably not the one he wants to hear, but I can't imagine that running without an exhaust is a good thing, not to mention the amount of damage that exhaust gasses coming off of the turbo is doing to everything under his hood. <smh>. 2013 Becketts Black 2.0 T R Spec.Harsh environmental conditions can affect the sensors, affecting their operation and potentially leading to what sensors can cause limp mode. High temperatures, excessive moisture, and prolonged exposure to extreme cold can all contribute to sensor malfunction. For instance, extreme heat can cause sensor …Limp Mode Jump to Latest Follow 3K views 5 replies 4 participants last post by Karaoke Kop Aug 11, 2015Hello - new to this forum. Have had a 2007 Santa Fe diesel auto for the last 3 years or so - really like it - very few problems. One issue I have had is whilst towing the car goes into a limp home mode where it won't go above 50mph or 3000 revs. Happened once on holiday last year and 3 times this year. Only happens when towing, and usually just ...

The transmission gets stuck in gear / limp mode. The transmission is stuck in the park. Vehicle speed is limited to 30mph. Transmission between 1st-2nd-3rd gears when cold; Causes. The most common problems with Hyundai transmissions: Low transmission fluid level – Common on Hyundai vehicles with over 100,000 miles. It can cause hard shifts ...Let’s start our content with the definition of your Hyundai Kona that goes to limp mode . You most certainly won’t have any info about the fact that this mode has been switched on and you will just feel the results. Generally the clues of a safety mode on your Hyundai Kona will be that you will identify an identifiable loss of power, you ...Let’s start our content with the definition of your Hyundai Elantra that goes to limp mode . You probably won’t have any info about the fact that this mode has been switched on and you will just experience the results. Generally the clues of a safety mode on your Hyundai Elantra will be that you will notice an identifiable loss of power ...Dean Sr. "Limp Home" is a seeting your dealer does with your 4 digit code and the tech's hand held computer. It allows you to start the car and "limp" somewhere at a low speed in the event of a mechanical problem. That proceduce, along with auto locks, easy exit etc. should have been explained by the dealer.Apr 16, 2022 ... ... 15:46. Go to channel · 10 Most Common Problems with the Hyundai Elantra N. N-Power Automotive•63K views · 8:55. Go to channel · 5 Things&n...I have a 2013 Hyundai Santa Fe sport with 98k miles. On 1/10 while on the interstate during an ice storm it went to emergency limp mode (limiting my rpg and mph, check engine light flashing). I had it towed to my repair shop who hooked up the diagnostic computer-which showed a “faulty knock sensor.” We replaced the knock sensor.

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In order to use the code scanner to diagnose limp mode you’re going to need to: Make sure that you are somewhere safe. Make sure that the engine has been off for at least 5-10 minutes. This will give the engine computer a few moments to sort anything out. Go ahead and verify that the transmission is still in Limp Mode.See full list on mechanicbase.com Check the water level in your radiator. I had neglected mine for a while and the level had dropped enough that I couldn't see any water through the the top of the rad. Low cost simple check but you might be surprised. Thanks for reply. Water lewel, oil lewel, automatic gearoil, servo oil is checked and is ok.It has gradually become more frequent to the extent it goes into limp mode within a a minute or so . so far the dealer has changed the EGR valve, TCM , the whole turbo assembly and it is no different.

The check engine light is still on and it seems as if the car is still in limp mode. I checked the oil this morning and it is at a good level, & checked under the car so there is no leak. Any suggestions? Don’t know if driving around in limp mode will harm the carThe engine switching to "Limp Home Mode" (not a official term, Ill wager), during a drive, with no shaking or other symptoms appart from an immediate loss of power and no response from the accelerator pedal. I experienced this in my new (to me) 2008 Hyondai i30 SX 1.6L CRDI, during a drive up a hill on my local highway travelling at …Maybe it’s because your Hyundai Santa Fe is going to limp mode . In reality, the security mode can be activated on a motor vehicle for a number of reasons and the activation of this mode will set the engine’s performance, sometimes producing a momentary or irrevocable loss of power from your Hyundai Santa Fe until you solve the …Limp Home Mode activated. I was driving home from work 3 days ago and my Veloster with less than 300 miles on it suddenly decided to go into "Limp Home Mode". I was stopped at a light and when I took off, it had almost no power and would not rev past 3k RPM. I drove it to the dealer and dropped it off for service to look at in the morning but ...Limp mode problem. As I previously posted my 2023 without warning went into limp mode. It was towed to the dealer who had it for a month and then said that while they did not doubt that it happened, they were unable to replicate the problem. This was in September. I had an attorney pursue a lemon law challenge.Car seemed to be running the same, so I kept driving (we were over 150 miles from home in Maryland). We had to drop one daughter off in Hershey, PA on the way and the car ran fine (with check engine light on) until the Hershey exit ramp where additional warnings popped up. Cruise control failed, LKAS failed and the car went into limp mode.The P0700 code in your Hyundai Santa Fe is a generic OBD-II code that indicates a malfunction within the transmission control system. This code is not specific to any particular issue but rather points to a general fault in the system. Additionally, the P0700 code usually appears in conjunction with other transmission-related codes or shift ...Quick fix for 'limp mode': pull off to the side of the road, shut down and open door for 15 secs to discharge. Restart car, and voila... You'll be back in regular drive mode, at least until you pull a moderate accel (c. 5K RPM) to pass or enter on-ramp. Then, it's likely to misfire into limp mode again. Wash, rinse, repeat. Very Skoda-esque ...On April 30, HYUNDAI STEEL presents Q1 figures.Wall Street analysts expect HYUNDAI STEEL will report earnings per share of KRW 1227.59.Track HYUND... On April 30, HYUNDAI STEEL wil...May 4, 2013 · Jay@SFR. It's actually called Power management mode in 3.8 maps which is most likely happening due to throttle actuation most of cases. Turbo'd guys most likely have these limp mode issues due to the amount of air flow coming into the throttle body which we were able to bypass in the tunes for FI maps. The impacts of limp mode. Limp mode is a security function that activates after your vehicle detects an engine fault. Think of it as a ‘cleaning in progress’ sign. Except instead of cleaning, your machine tries to fix itself, and instead of asking for caution, it’s a full-fledged roadblock stopping you from doing much of anything at all.by meganmarie100594. Limp mode no engine code. HELP! : (. I have a 2012 Hyundai Elantra limited with 67k miles and I’m the third owner. Since about September I’ve had this issue were the car will sometimes not turn on. There’s no engine code so it’s been difficult trying to pin point the issue. My dads a mechanic and we’ve changed a ...

When i took it off, pieces of the first cat (the one on the manifold) were present at the front port of the Cat. I cleaned them out and banged out the dust that was plugging the honeycomb and reinstalled the Cat. I took it for a spin and power was restored!! the second cat was plugged causing the low power mode with no check …

FWIW, limp mode that clears when the ignition is recycled is usually caused by a boost pressure issue, in my experience. That sounds like you might have an incorrect bulb fitted in one of your tail lights. Try switching on the headlamps, then go to the back of the car and check to see if both tail lamps look the same.Good evening, Having a problem with our Hyundai ix35 2011 plate. Back in February when we had that cold snap, it began to lose power when accelerating, usually around 3000rpms. The engine didn't cut off, but would just lose power and the car would slow down. After 10 seconds or so, it would kick back in and drive as normal.In Limp Mode once more I'm not sure Hyundai really knows what the issue is . I had the ecu update done a month ago, and all was fine. The family and I headed out for vacation on Saturday June 8 and my 2014 Santa Fe Sport went into Limp Mode about 10 minutes into our drive. I managed to drive it to the nearby Hyundai dealership in Marietta, GA.Hello all, What would cause 2002 Terracan CRDi to keep going into limp mode? No engine light coming on. Checked brake pedal and found switch loose, tightened it up, cancelled limp mode, went fine for four/five days AGAIN then back into limp mode. Fuel filter has been changed. Was showing inlet metering valve code but that has …Re: Hyundai Elite i20 - Random limp mode. Had the exact issue with my Punto diesel from 2012-2015 and Fiat service was clueless. The car would lose power at the 2000-2500 rpm range and I had to stop and restart the car to make the issue go away, albeit temporarily. The EGR valve was changed thrice.2015 VT Limp Mode. Okay so i have seen quite a bit of issues with limp mode in these cars. About a month ago I started having misfires on startup for about 5 seconds and the car smoothed out and ran perfectly fine. About 6 days ago the car started having issues starting up on a cold start, then 3 days ago on cold start I put it in gear …Hyundai Santa Fe. 2nd Generation Santa Fe (2007-2012) Would love some help. Limp Mode randomly, Codes P2106 / P2110 / P0638. ... After the third mechanic looked at it they were able to capture the Santa Fe going into limp mode and the codes led them to believe the throttle body needed to be replaced. I went with their advice and so ...L. lvdukerider. 2109 posts · Joined 2014. #17 · Aug 18, 2014. When i test drove my 2014 3.8 ultimate it almost ran out of gas and went into a limp home mode which allowed me to slowly drive to a gas station. No CEL and everything went right back to normal as soon as the salesman put a few gallons in it. Like.by meganmarie100594. Limp mode no engine code. HELP! : (. I have a 2012 Hyundai Elantra limited with 67k miles and I’m the third owner. Since about September I’ve had this issue were the car will sometimes not turn on. There’s no engine code so it’s been difficult trying to pin point the issue. My dads a mechanic and we’ve changed a ...5 posts · Joined 2022. #1 · Nov 9, 2022. Hi. Have a problem with my Ioniq, lights appear and car goes into limp mode , the codes indicate integrated brake actuator unit failure, it’s been into to dealers with the same codes, picked it up yesterday and after an hour or so the same lights appear and car went into limp, thought I’d try today ...

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Are you in the market for a new car in Grimsby? If so, you may have come across the name “Grimsby Hyundai.” As one of the leading car dealerships in the area, Grimsby Hyundai offer...Being close to home, I was able to drive slowly, mostly in a shoulder, to my home. Doing some research I discovered this model vehicle was subject to a Recall due to failing connecting rod bearings. I called my local Hyundai dealership to ask about the repair, in which I was told the repair would cost $4,000-$6,000 for an engine replacement.Apr 5, 2023 · To protect your engine and yourself, the Powertrain Control Module goes into a fail-safe mode when it detects a MAF sensor issue, limiting the power of acceleration. If you scan your vehicle and it returns trouble codes P2106 and P0101, your MAF sensor is causing the PCM to go into limp mode. 2014 Santa Fe- knock sensor issue;limp mode. I have a 2013 Hyundai Santa Fe sport with 98k miles. On 1/10 while on the interstate during an ice storm it went to emergency limp mode (limiting my rpg and mph, check engine light flashing). I had it towed to my repair shop who hooked up the diagnostic computer-which showed a “faulty knock …Jay@SFR. It's actually called Power management mode in 3.8 maps which is most likely happening due to throttle actuation most of cases. Turbo'd guys most likely have these limp mode issues due to the amount of air flow coming into the throttle body which we were able to bypass in the tunes for FI maps.When it comes to buying a Hyundai vehicle, choosing the right dealer is of utmost importance. A good dealer will not only provide you with the best options but also ensure that you...9 posts · Joined 2022. #1 · Jun 17, 2022. Hey everyone, I have a 2016 Sonata which threw a p0036 code and sent the car into limp mode. I've changed out the downstream sensor and since the car was in limp mode and throwing p0300 code I've gone and changed out the spark plugs (originally done last year). Unfortunately the ECU won't reset either ...20005 posts · Joined 2014. #2 · Aug 11, 2015 (Edited) Hello Josh, welcome to the forum. It depends on what the trouble code is. There are 2 sensors in the throttle pedal and a feedback sensor in the throttle flap actuator. You can find some additional info in this thread -> Tucson CRDi - P2113. Regards.It is only there for emissions, but adds complexity and isn’t essential to a vehicle’s fundamental operation, yet the vehicle can be immobilised or put into limp mode because of it.Oct 2, 2021 ... Welcome back to another video, my veloster turbo went into limp mode and the shop couldnt fix it! See the process of what happened and how ... ….

P1326 HYUNDAI Code Knock Sensor Detection System (autocodes.com) Maybe the dealer can reprogram the ecu. You could try an oil change with a little heavier oil. Evidently the conflict seems to be that the dealer performed a test that the engine passed, but the ecu is saying there is still a noise (p1326) and goes into limp mode.On the way I noticed it was in limp mode. I've read before that when in limp mode apparently the car won't exceed XXXX amount of rpms, (I believe it was quoted at …2238 posts · Joined 2021. #17 · Mar 23, 2023. When you are saying the same issue, are you saying that you are currently in limp mode or just concerned about it. If just concerned, take it into the dealer and they will apply the mitigating patches for the car. And BTW, one of them made the transmission buttery smooth.Apr 13, 2023 · At that time, Diagnostic Trouble Code (DTC) P1326, specific to the KSDS, will be recorded in the ECU. The vehicle can continue to be operated for a limited time in Limp Home Mode, but it will accelerate slowly and have a reduced maximum speed. Also, engine RPMs will be limited to approximately 1800-2000 RPM. 06 sonata is on a limp mode with the ESC light on. Can't rev the engine; just idling but it's ok in reverse. Tried to - Answered by a verified Hyundai Mechanic ... 2006 Hyundai sonata 3.3 transmission changed along with other new parts PO755 and ESC lite come on car is in limp mode sometimes it comes off limp mode but then when decelerating it ...Santa Fe 2017 - Blinking MIL + Limp Mode Santa Fe Want to know if anyone else had similar experiences, ... Hyundai USA has a set engine inspection procedure that is the same for any 2011-2019 model with a 2.4L/2.0T. That is a bearing clearance test — pays 1.1 hours. That is valve cover removal — pays .5 hours.Mar 5, 2019 ... Limp mode is generally when the car's computer acknowledges a serious fault somewhere and reduces the engine's output to prevent further issues.Among the common limp mode causes are: Pushing the engine too hard - over speeding or accelerating too hard typically causes limp mode. Malfunctioning of the sensors - sensors may also be faulty, sending the wrong information to the ECU, which may lead to the activation of limp mode. Issues with the wiring that connects the sensor to …It was basically like limp mode but no cel or codes thrown at all. So I take an exit and check everything out, no vac leaks, oils good, air filters good, it's obviously getting fuel and I'm assuming tps is good because I can gas it and it responds like normal but no power. So I continue messing around and finally I heard a weird loud suckin ... Hyundai limp mode, May 4, 2013 · Jay@SFR. It's actually called Power management mode in 3.8 maps which is most likely happening due to throttle actuation most of cases. Turbo'd guys most likely have these limp mode issues due to the amount of air flow coming into the throttle body which we were able to bypass in the tunes for FI maps. , Oct 21, 2023 · Low transmission fluid. If your car is in limp mode but no warning light is shown, one possible cause could be low transmission fluid. Insufficient transmission fluid can lead to various transmission problems, including the car going into limp mode. It is essential to regularly check your fluid levels as part of your car maintenance routine. , Sep 28, 2011 · Limp Home Mode activated. I was driving home from work 3 days ago and my Veloster with less than 300 miles on it suddenly decided to go into "Limp Home Mode". I was stopped at a light and when I took off, it had almost no power and would not rev past 3k RPM. I drove it to the dealer and dropped it off for service to look at in the morning but ... , In addition the following DTC related to a limp home condition may have occurred: - P1295: ETS System Malfunction - Power management mode engaged - P2106: Throttle Actuator Control System - Limited Performance mode Applicable Vehicles: 10~12MY Genesis Coupe (BK) 3.8L MPI vehicles TSB: 12-FL-003 ECM UPDATE - MIL …, 20 May 2021. If your car suddenly loses power and warning lights on your dashboard come on, it’s likely your car has entered ‘limp mode’. In the event this happens, it’s important …, Jul 15, 2022 · Limp mode. Had a problem Engine management light came on and went into limp mode on my Hyundai 2016 Tucson,plugged it in and said Injector Circuit open cylinder 4,gave it to garage replaced Injector fine for a day or two happens again cleared codes used Injector cleaner fine for a day then limp mode again with same fault checked Injector no ... , It is only there for emissions, but adds complexity and isn’t essential to a vehicle’s fundamental operation, yet the vehicle can be immobilised or put into limp mode because of it., 2019 Hyundai Santa Fe 2.4 GDI @ 37k -- Mobil-1 EP 10w30 / Euro 0w40 FrankenBlend 2020 Kia Soul X-Line 2.0 MPI @ 27k - Amsoil Euro 0w30 - ... But definitely get that checked out with limp mode on. Save Share. Like. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a ..., Here's a solution: Reinstall his exhaust. It's probably not the one he wants to hear, but I can't imagine that running without an exhaust is a good thing, not to mention the amount of damage that exhaust gasses coming off of the turbo is doing to everything under his hood. <smh>. 2013 Becketts Black 2.0 T R Spec., The P0700 code in your Hyundai Tucson is a generic OBD-II code that indicates a malfunction within the transmission control system. This code is not specific to any particular issue but rather points to a general fault in the system. Additionally, the P0700 code usually appears in conjunction with other transmission-related codes or shift ..., When it comes to buying a Hyundai vehicle, choosing the right dealer is of utmost importance. A good dealer will not only provide you with the best options but also ensure that you..., The check engine light is still on and it seems as if the car is still in limp mode. I checked the oil this morning and it is at a good level, & checked under the car so there is no leak. Any suggestions? Don’t know if driving around in limp mode will harm the car, In an ideal world, when limp home mode activates, you should stop as soon as you can: it is designed to protect the engine and the best way to do this is to switch it off. Limp mode is giving you the stark message: “Pull over or you’re going to damage me.”. Equally, the problem isn’t so serious that the engine has to shut down immediately., The check engine light would come on and the car would go into limp mode, preventing a thrown rod as you experienced. if that update is installed, you'll get a new engine installed from Hyundai with a lifetime warranty. ... Update: Hyundai corp requested all of our maintenance records. Agreed to “reimburse “ us for rental car ..., FWIW, limp mode that clears when the ignition is recycled is usually caused by a boost pressure issue, in my experience. That sounds like you might have an incorrect bulb fitted in one of your tail lights. Try switching on the headlamps, then go to the back of the car and check to see if both tail lamps look the same., basically my tiburon is running in limp mode. It has no power and its only drivable without the MAF connected. I installed new plugs, wires, crank position sensor, MAF, O2 sensor, and 1&4 ignition coil. The car was running LEAN prior to limp mode. Theres also a ticking noise coming from the injectors area., , Mar 18, 2020 · 2015 VT Limp Mode. Okay so i have seen quite a bit of issues with limp mode in these cars. About a month ago I started having misfires on startup for about 5 seconds and the car smoothed out and ran perfectly fine. About 6 days ago the car started having issues starting up on a cold start, then 3 days ago on cold start I put it in gear and the ... , Joshryanlowei30n Discussion starter. 4 posts · Joined 2023. #1 · Jul 7, 2023. Hi all, We are struggling with a Turbo over boost condition causing a no boost limp. I30n 22 DCT. - Ran the car with a stage 2 file, Gpf delete and catless Dp, Intercooler, airtec intercooler and turbosmart Bov. Oil cooler and boost pipes. No issues., 20005 posts · Joined 2014. #2 · Aug 11, 2015 (Edited) Hello Josh, welcome to the forum. It depends on what the trouble code is. There are 2 sensors in the throttle pedal and a feedback sensor in the throttle flap actuator. You can find some additional info in this thread -> Tucson CRDi - P2113. Regards., mahout. 'limp home' mode is the result of a detected defect in the emissions or operating electronics. When that condition is detected by the computer system the operation of the vehicle is reduced to the least harmful conditions to the vehicle and to environment. Least harmful to vehicle being most important., I later discovered the poor performance was due to the fact that the vehicle was in 3rd gear "limp" mode. The code generated is 1602 "failure to communicate between the ecu and transmission control module". ... Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from ..., Let’s start our content with the definition of your Hyundai Kona that goes to limp mode . You most certainly won’t have any info about the fact that this mode has been switched on and you will just feel the results. Generally the clues of a safety mode on your Hyundai Kona will be that you will identify an identifiable loss of power, you ..., At least this will give you a good idea of the damage or no damage. 1). Locate the Transmission magnetic drain plug. Depending on model yr. it might be 28 to 32 mm. Hex. Get drain pan and place white napkin at the bottom Pan. Remove the magnetic drain plug. Inspect the magnetic drain plug for metal particles., Apr 13, 2023 · At that time, Diagnostic Trouble Code (DTC) P1326, specific to the KSDS, will be recorded in the ECU. The vehicle can continue to be operated for a limited time in Limp Home Mode, but it will accelerate slowly and have a reduced maximum speed. Also, engine RPMs will be limited to approximately 1800-2000 RPM. , Driving on a highway, car abruptly went into limp mode, had to cruise to a stop, and would not accelerate. Numerous dash lights illuminated. Shut car off and restarted… car was back to normal. ... Get it towed to Hyundai dealership, who advises the following is needed: 1) Throttle body replacement ($1300) ..., Also saying in dash that hybrid system warning. 2012 hyundai sonata - Answered by a verified Hyundai Mechanic. ... Engine light began flashing and car went into limp mode had it scanned and code 1326 came up so i replaced knock sensor reset ecm to no avail same thing engine light still flashing and still in limp m ..., 7. screw back all the nuts tight. The transmission fluid will be pressurized when the car's moving, so make sure the nuts are tight otherwise the fluid will leak. Put back the air filter assembly, battery tray and battery. Put the wheel back on. screw the transmission fluid pan nut tight (make sure it doens't leak)., Likes Received: 1. Turtle said: I had the software update done to my 2018 Sonata 2.4 l a month ago. While on vacation my Sonata decided to go into limp mode. It was the knocksenor wiring harness that was the culprit. The factory harness is too taunt and routed too close to body,frame causing a odd frequency to snap the ECM into safe ( …, by meganmarie100594. Limp mode no engine code. HELP! : (. I have a 2012 Hyundai Elantra limited with 67k miles and I’m the third owner. Since about September I’ve had this issue were the car will sometimes not turn on. There’s no engine code so it’s been difficult trying to pin point the issue. My dads a mechanic and we’ve changed a ..., long story short it started with low fuel press>fouled plugs/wires > MAF bad > FPR bad. i fixed the low fuel pressure with a missing o-ring in the fuel pump assembly, the wires and plugs probably got bad from running rich for too long and the MAF was just plain dirty. The fuel pressure regulator probably made the most difference., Mine did go in to limp mode and had random loss of 1st gear, and when in limp mode, would only go up to 4th once I did get it going. I did get a couple codes and engine light came on. Hyundai didn't acknowledge it, but there is a TSB issued for it, so I had to take it to a transmission shop, and they told me there were some factory ..., 2014 Santa Fe- knock sensor issue;limp mode. I have a 2013 Hyundai Santa Fe sport with 98k miles. On 1/10 while on the interstate during an ice storm it went to emergency limp mode (limiting my rpg and mph, check engine light flashing). I had it towed to my repair shop who hooked up the diagnostic computer-which showed a “faulty knock …