DTC C1542-01: Brake Circuit Error: 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.
IEB module receives information about connection state of components and operation state through brake circuit. Brake circuit sends ON state to IEB module and the pressure sensor data is increased when you depress a brake pedal. While you release the brake pedal, brake circuit sends OFF state to IEB module and the pressure sensor data remains below 5 bar.