One problem related to gas recirculation valve (egr valve) 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.
The contact owns a 2002 Hyundai Sonata. While driving 40 mph, the service engine soon light illuminated. On hot days (90 degree weather), the light illuminates and remains lit. However, in cooler weather, once the vehicle is turned off and restarted, the service engine soon light dims. The dealer stated that the VIN was not included in NHTSA campaign id number 04v178000 (fuel system, gasoline:storage:tank assembly). The current mileage was 40,300 and failure mileage was 40,000.