One problem related to speed sensor has been reported for the 2002 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Hyundai Sonata based on all problems reported for the 2002 Sonata.
On 09/04/07 I bought a used 2002 Hyundai Sonata and on 09/05/07 the car lost 1st and 4th gear it seemed as if the transmission were going out , but when I started reviewing other consumer related issues I noticed over 900 consumers had the same problems with their Hyundai's , but the cause ended up being the output speed sensor. Which in some cases took consumers up to 6 months to locate one. Unfortunately I financed the car as is with no warranty.