General Information

Active Hydraulic Booster

C1807 Sub CAN bus off - General Information

Component Location





General Description

The AHB ECU (Electronic Control Unit) has two CAN hardwares, first is used for power train CAN communication, second (sensor channel) is auxiliary CAN used for communication between AHB ECU and HECU. We call that as sub CAN bus.
The sensor channel CAN hardware is installed in AHB ECU.

DTC Description

The HECU checks the CAN communication lines for the normal ESC control, and sets this code if an AHB message is not received within 500 ms.

DTC Detecting Condition





Diagnostic Circuit Diagram