Car Problem Reports

Hyundai Sonata Transmission Won't Shift/CEL Due to Failed Speed Sensors in Transmission

 
Hyundai Sonata Problem
22 Reports
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Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2006

Average Mileage: 142,633 mi (32,000 mi - 256,000 mi)

Verified

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.

  • Visitor, , 220,000 mi

    want change out of 3rd gear want go in reverse service light on.

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  • Visitor, , 125,000 mi

    The transmission seems to be stuck in third gear sometime ,the jerks and engine light comes on

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  • Visitor, , 42,000 mi

    The check engine light stays on and the transmission does not shift properly.

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  •  Rookie

    Transmission won't shift gears/CEL on

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  •  Rookie

    My car drives from my house to the stop sign. It stops rough. When I put my foot on the gas it moves slow and it whines then jerks. I have to keep pulling over to make it stop. It keeps jerking and the car has stopped running. I just had the input and output speed senors replaced and I also replaced the throttle position senor. Is there anything I can do to find out if the transmission just need service or do I need to replace it. Yesterday I smelt some burned. It was only brief.

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  •  Rookie

    Not fixed yet but 65 mph and gear slipped to 3rd and wouldn't shift back up. The error codes generated were P1529 and P0720, I'm hoping to replace the Output Speed Sensor and hope that helps.

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  • Visitor, , 115,000 mi

    Cold Start it shifts OK and I can drive around for hours till I turn off car then it sticks in second till I shut it down & it cools completely.

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  • Visitor, , 222,650 mi

    Car over heated. Rt/Rr wheel bearing went bad. Check engine light came on. Had wheel bearing replaced. Pulled thermostat. Check engine stayed on. Drove car and now stuck in 3rd gear. Drove 160 miles to get car home. Car engine ran perfectly. Didn't over heat. Upon breaking at low speed (~ 15 mph) car jerked and felt like it trying to slip into reverse. (Felt like the brakes had locked up). This happened only once during the entire trip. Car moderately jerks when shifting from park to reverse or into drive. The slower I shift, the less the jerk. Haven't had the car diagnosed yet.

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  •  Rookie

    Transmission will not shift, not sure what the issue is.

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  • Visitor, , 165,000 mi

    rough transmission shift

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