DTC Description
WARNING: This page is about a different car, the 2015 Hyundai Sonata. However, it is still accessible from the selected car via links, so may be relevant.
The AHB ECU monitors the voltage from the valve relay.
When the valve relay is switched to ON, the AHB ECU will set this code if the solenoid voltage is below a specific range for a period of time.
When the valve relay is switched to OFF, the AHB ECU sets this code if the solenoid voltage is over a specific range for a period of time.