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DECODER OBDII

On-Board Diagnostics System - BYD Atto 3

High Voltage System

Codes starting with P0A... usually refer to the electric traction system, inverter or LFP Blade battery.

Communication (CAN)

Uxxxx codes indicate communication failures between ECUs. Very common if the 12V battery is low.

Chassis and Bodywork

Bxxxx or Cxxxx codes refer to auxiliary systems such as ABS, Airbags, windows or air conditioning.