General Information

Active Hydraulic Booster
C2112 Valve Relay Error - General Information

Component Location





General Description

The AHB ECU(Electronic Control Unit) supplies battery power to all soleonid 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 ).

DTC Description

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.

DTC Detecting Condition





Diagnostic Circuit Diagram