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: 96,029 (20,000–200,000)
17 model years affected: 1995, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
102 people reported this problem
49 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.
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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 Amazon.com for $126.00 and installed them myself. Problem solved.
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Engine will rev up to 4000+ before shifting. Sometimes it will downshift at freeway speeds.
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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.
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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
downshifts to 3rd and stays there until a stop and restart
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).
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.
Check engine light on Hard shifting from P-R or P-D Transmission goes into fail safe mode
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.
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?
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 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.
2007 Hyundai Elantra146,234
Car dowshifts into secord gear and stays there
Check Engine Light is on and Transmission Won't Shift Correctly on my Hyundai Elantra. Does any one how i can get this fixed or go about getting this fixed??
I can't drive my 2005 Hyundai Elantra on freeway. It will downshift or stay stuck on 3rd gear. I just bought the input/output sensors and will be getting them put in asap! Hopefully this fixes the problem . In order to get this to be a recall we must report it! Here's info: Contacting NHTSA is easy. You can write us, call us toll-free, or connect with us over the Internet. Our address and toll-free telephone number are provided in every recall notification letter. You can write to us at: National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE, West Building, Washington, D.C. 20590. Our toll-free telephone number is (888)DASH-2-DOT (1-888-327-4236). To contact us over the Internet, simply go to our interactive web site at www-odi.nhtsa.dot.gov/ivoq/ and complete the questionnaire.
2008 Hyundai Elantra189,183
Transmission fluid leaking
2001 Hyundai Elantra141,229
I change the input and output sensor due to the transmission problem and my car still won't move forward or in reverse. My rpm keeps revving up then it will pull n stop n repeat
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
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