If trouble codes were erased (after replacing part) then the vehicle needs to go through a few drive cycles to get all your 'monitors' 'ready' to monitor all the onboard systems involved.Erasing trouble codes also clears the readiness status.
RepairPal Certified shops can diagnose and repair your 2002 Hyundai Sonata. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.