Check Engine Light and Transmission Won't Shift Correctly on Hyundai Elantra

If the automatic transmission does not shift properly and the Check Engine Light illuminates, the speed sensors in the transmission may have failed. The sensors are simple and inexpensive to replace.

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Average mileage: 96,925 (5,000–200,000)
18 model years affected: 1995, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2015
122 people reported this problem
59 people shared problem details
2002 Hyundai Elantra100,000
Car has had this problem for a while now. Being a broke college student I freaked out and assumed it needed a new transmission, so I sort of swept it under the rug and kept driving while it let me. It doesn't happen all the time, seems to be the most when I'm hovering around the speeds where it would normally shift gears, especially when my speed is changing a lot (i.e. in traffic). For the most part, when it happens I pull over, wait for it to reset, and usually it works fine. Sometimes it still stays stuck when I start driving again, so I repeat the process. Eventually got myself to research it after almost a year (and driving it wayyy less than normal) and from what I've read it seems to be bad Input/Output Speed Sensors. Another thing I gathered from what I've read is that a LOT of people have had this problem. Manufacturer recall would be nice.
Engine will rev up to 4000+ before shifting. Sometimes it will downshift at freeway speeds.
will not change into any other gear.The rpms shoot up and it runs sluggish, just will not go from drive to 1st or 2nd at all
2001 Hyundai Elantra125,000
I bought the car used, it shifts hard and then stays in third gear. Turn off car, reset eng. lite and resume. Replaced input, output sensors and Idle Speed Control . Not hard to replace. Got them on for $126.00 and installed them myself. Problem solved.
Bought my car used (previous 1 owner) in early 2013 as soon as I was over 60000 my car started with a jerky jolting problem when the car would shift. It gradually got worse and check engine light came on. We took it to a local dealer and found it was the transmission sensor. After paying almost $700 to have this fixed we found that this is a very common problem - I'm surprised Hyundai has not recalled on this yet.
downshifts to 3rd and stays there until a stop and restart
Check engine light on Hard shifting from P-R or P-D Transmission goes into fail safe mode
Car will downshift at higher speeds, runs sluggish. Sometimes will stall at red light. Check engine light is not on, so dealership says nothing is wrong. I don't like to drive on the freeway anymore, it's frustrating.
2001 Hyundai Elantra123,000
When I am driving 30 mph or more, I experience a suddenly movement in the car. The check engine light turns on.The rpm goes up the double. Sometimes when I shut down the car, it fix itself. But not always. When I want to accelerate from 0 mph, it seems like it is in 3rd trying to increase speed but it takes more time than usual to get correct speed.
Check engine light came on and shifting problem occured. Took it in to dealer and it was sensor problem, got sensor replaced @ $290.00 (not covered by the big 100,000 mile bumper to bumper/10 year warranty).
2001 Hyundai Elantra171,000
I took car to car wash to wash engine. It started up fine went to put it in drive it was trying to start out in 2 or third gear. So i manually shifted it to first gear then 2nd etc. It slammed into the next gear. Would that be shift control module.? I hope ican fix pretty cheap. I was doing a favor for a girl friend that just had a stoke. I really dont have cash to repair thanks
Took the Elantra in to the service area to be looked at for the transmission not shifting right while going down the road. Shifts hard, slams into gear, gear shifter hard to take from park to another gear. Dealership told use they never have transmission problems with the Elantra. And after talking with manager saying that something was wrong and a test drive with my husband, the manager said there is defiently wrong with the transmission. So we now have to get a brand new transmission for our year old car.
Gear din't shift the gear when the rpm on 3 , 4 and some time stuck into 4th gear then i stop the car and switch off it after few minutes it gets normal and in reverase rpm going up and car move on slowly slowly kindly guide me what is soultion Thanks
2008 Hyundai Elantra100,000
Transmission want shift, primariy reverse. I too it back to Gossett Huyundai in Memphis. They said the transmission is out due to some comupter gadget in the transmission. They are charging me $3145.00 to repair. Is there a recall on this? If not, it should be...Thank you very much.
2001 Hyundai Elantra170,000
I own a 2001 Hyundai Santa Fe 4x4, the tranny slips in and out of gear. After replacing the input & output sensors the problem still exists. I'm told since I now have three codes for selenoids I need to replace the TCM harness.( and possibly 3 selenoids.) what's next?
2007 Hyundai Elantra100,900
My car shift out of drive into 3rd gear at unknow intervals. It seems to happen after driving for about 45mins to 1 hour of time, but just never know. The check engine light will sometimes come on, but will reset itself after sitting for a while. I have had the shift selenoid and wiring replaced at a cost of $688.75 at a local Transmission place. It will cost me an additional $1600 if I want to rebuild the transmission as they suggest. I have been driving the car for a few weeks after having this done and it is still doing the same thing I took it to be corrected. After reading some of the articles, I am just a little leary to go ahead and just have the transmission rebuilt. It appears to me that there may be something else cheaper to explore.
Transmission won't Shift/CEL on, Is it under warranty?
Car has been shifting very rough, jerking at each shift. The RPMs get up higher than I have ever seen...over 4000 and at times has no power going up a hill. The check engine light went on and then out in about 2 days before my appointment at the dealership. Twice, no codes on the check engine light have been retained in the memory and they have no ideas at all. I have been sent home twice with no repair whatsoever.
2000 Hyundai Elantra188,000
All lower gears work but when you get to speed or rpms to go into OD it slips in and out of OD and 3rd. It finally sticks in gear but not overdrive. Was told input and output codes so bought new sensors. Any one have ideas of what else it could be?
2007 Hyundai Elantra134,000
Just had solenoid switch kit replaced ($700) and car is still slipping gears and appears to be getting stuck in 3rd gear.
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