DTC C1839-82: CAN Signal Error RSPA: General Description
WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.
Remote Smart Parking Assist (RSPA) is Assist module, It searches the parking space and controls the steering wheel and brakes along with various notification phrases for parking.
IEB performs EPB and braking control according to RSPA request.