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2001 Hyundai Sonata Stays in Third

Tiny
DAVE0924
  • MEMBER
  • 2001 HYUNDAI SONATA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
I have a 2001 Hyundai Sonata with 80,000 miles. Runs fine, but after driving several miles, the check-engine light comes on and the transmission sticks in third gear and will not shift. Even if manually shifted to first or second, it stays in third until I stop the car.

If I stop and kill the ignition and then restart, it runs and shifts fine again but engine light remains lit. The problem may or may not return after several miles of driving.

Any thoughts?
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Tuesday, May 6th, 2008 AT 5:55 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
When was the last transmission service?

What you need to do here is get the computer scan for code/s it could have a seperate computer called TCM and comeback with the code/s this is where we start the diagnosis
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Wednesday, May 7th, 2008 AT 12:57 AM
Tiny
DAVE0924
  • MEMBER
  • 2 POSTS
OK, I now have the codes.
P1529 (no info), and
P0715 Input Turbine Speed Sensor CKT Malfunction

The transmission is original and never has been serviced.
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Wednesday, May 7th, 2008 AT 2:45 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get the transmission service, if Input Turbine Speed Sensor CKT Malfunctioning keeps coming back.-Replace the speed sensor, the P1529 might be caused by the speed sensor-
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Wednesday, May 7th, 2008 AT 1:33 PM

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