WARNING: This page is about a different car, the 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.
Self-diagnosis process.
Courtesy of KIA MOTORS AMERICA, INC.
NOTE:
When operating the self-diagnostics, the below fault (self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings (driver's side only) and the remaining symbols are OFF.
Fault code display
Continuance operation: DTC code.
Courtesy of KIA MOTORS AMERICA, INC.
Continuance operation: DTC code.
Courtesy of KIA MOTORS AMERICA, INC.
STEP operation.
Normal or one fault code is same as a continuance operation.