• posted by Craig Murray

C1BA500 indicates an internal calculation error detected by the electronic power steering (EPS) electronic control unit (ECU). The fault affects EPS control processing, where the ECU evaluates steering inputs, sensor data, motor-control parameters, and network information to determine the required steering assistance. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

C1B9D22 indicates that the electronic power steering (EPS) controller has detected a power supply voltage above its expected operating range. The fault affects the electric steering assist system, which requires a controlled electrical supply to operate the steering motor and associated control electronics correctly. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

C1B9D21 indicates that the electronic power steering (EPS) controller has detected a power supply voltage below its expected operating range. The fault affects the electric steering assist system, which relies on stable electrical power to operate the steering motor and control electronics. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

Electronic Power Steering Controller CAN Off indicates that the electronic power steering (EPS) controller has lost or stopped receiving required communication over the Controller Area Network (CAN). The fault affects steering assistance and network communication between the EPS controller and other vehicle control modules. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

U300317 indicates a soft overvoltage condition detected by the electronic parking brake (EPB) system. The fault affects EPB electrical power management, where the controller monitors its supply voltage and detects when it rises above the expected operating range. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

U300316 indicates a soft undervoltage condition detected by the electronic parking brake (EPB) system. The fault affects EPB electrical power management, where the controller monitors supply voltage and can detect when available voltage falls below its expected operating range. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

C11A006 indicates an overload condition involving the electronic parking brake (EPB) actuator. The fault affects the electric parking brake system, which monitors actuator load during brake application or release and can detect excessive resistance or operating force. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

C110009 indicates a failure involving the main processing chip within the electronic parking brake (EPB) controller. The fault affects EPB control and monitoring functions, with the controller responsible for processing switch commands, actuator operation, and system status information. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

C11B113 indicates a fault involving the right electronic parking brake (EPB) motor or its associated wiring circuit. The fault affects the electronic parking brake system, which uses electrically operated actuators to apply and release the rear parking brakes. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

• posted by Craig Murray

C11B013 indicates a fault involving the left electronic parking brake (EPB) motor or its associated wiring circuit. The fault affects the electronic parking brake system, which uses electrically operated actuators to apply and release the rear parking brakes. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.