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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Active Hydraulic Booster (AHB) System Diagnosis - HEV >> DTC C2112: Valve Relay Error >> General Information >> General Description

General Information: General Description

The AHB ECU(Electronic Control Unit) supplies battery power to all solenoid valves with a valve relay which is controlled by the Electronic Control UNIT(ECU).

The valve relay and all solenoid valves are installed inside the HPU(Hydraulic Power Unit).