BYD ATTO 3 (e-Platform 3.0) U017487 Loss Of Communication With Auxiliary Radar

U017487 indicates a loss of communication between the vehicle’s control systems and the auxiliary radar module. The fault affects the radar-based driver assistance and sensing network, which relies on vehicle communication buses to exchange object detection and system-status information with other electronic control units. The BYD ATTO 3 uses BYD’s e-Platform 3.0 architecture, with this generation introduced from 2022 and continuing onward.

Symptoms

• Driver assistance warning displayed
• Radar or sensing-system warning message
• Auxiliary radar functions may be unavailable
• Adaptive or safety assistance functions may be restricted
• Multiple communication-related fault codes may be stored
• Fault may occur intermittently
• Radar-based functions may deactivate
• U017487 stored in a relevant control module

Possible Causes

• Auxiliary radar module power supply fault
• Poor radar module ground connection
• Open or short circuit in the radar communication wiring
• Damaged CAN bus wiring
• Loose or damaged radar connector
• Corroded or poorly seated connector terminals
• Auxiliary radar module internal failure
• Communication network fault
• Low or unstable 12V system voltage
• Incorrect module configuration or software issue
• Fault in another control module affecting network communication

Diagnosis

Diagnosis should begin by confirming U017487 and performing a complete vehicle network scan to identify related communication or power-supply faults.

The auxiliary radar module’s power and ground circuits, CAN communication, connector condition, network status, and module availability should then be evaluated against manufacturer specifications. If communication is completely absent, the diagnostic direction should establish whether the cause is a power supply, wiring, network, or module fault before considering replacement.

Workshop technicians across New Zealand frequently use factory repair procedures when diagnosing intermittent sensor and communication faults like this.

Accurately diagnosing this fault often requires manufacturer testing procedures, wiring diagrams, connector pinouts, specifications, and system calibration information. Access to the factory service manual significantly reduces diagnostic time and helps prevent unnecessary parts replacement.

Applicable Years

2022, 2023, 2024, 2025, 2026, onwards

To order the correct OEM Service and Repair Manual for your BYD ATTO 3, submit your request using the form below and our team will provide the ordering details.