BYD U019780
Communication with intelligent power brake control module failed
Quick answer
For BYD ATTO 3 model years 2022–2026 (Global), DTC U019780 indicates: “Communication with intelligent power brake control module failed.”
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does U019780 mean?
For BYD ATTO 3 model years 2022–2026 (Global), DTC U019780 indicates: “Communication with intelligent power brake control module failed.”
2. Technical explanation
This is a Network-system diagnostic trouble code. Verified evidence identifies a failed communication condition involving the intelligent power brake control module. The available evidence does not establish the underlying fault mechanism, component failure, wiring condition, or repair procedure.
3. What system is affected?
Network; communication with the intelligent power brake control module.
4. How serious is this code?
Unknown. Severity has not yet been established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven has not yet been established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged has not yet been established by verified evidence.
9. What you can safely do
- Arrange diagnostic assessment by a qualified BYD service provider or appropriately equipped technician.
- Do not attempt high-voltage system repairs based on this code.
10. Step-by-step troubleshooting
- Read and record all diagnostic trouble codes with suitable diagnostic equipment.
- Further diagnostic steps have not yet been established by verified evidence.
11. When to contact service
Service need has not yet been established by verified evidence. Given that this code concerns communication with an intelligent power brake control module, seek qualified diagnostic assessment.
12. What the service center may check
- Confirm the presence and status of U019780 using suitable diagnostic equipment.
- Additional service checks have not yet been established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- BYD ATTO 3 · 2022–2026 · GLOBAL
15. Related TSBs / service bulletins
- No technical service bulletin information was supplied in the verified evidence.
16. Recall information
- No recall information was supplied in the verified evidence.
17. Official manufacturer information
Verified source: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: “ATTO 3 | ATTO 3 / Yuan Plus (SC2E) | U019780.” The supplied evidence applies to BYD ATTO 3, model years 2022–2026, Global region.
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD DTC U019780 mean?
It means communication with the intelligent power brake control module failed.
Which vehicles are covered by the supplied evidence?
BYD ATTO 3 vehicles for model years 2022 through 2026 in the Global region.
Can I drive with U019780?
Not yet established by verified evidence.
What causes U019780?
Not yet established by verified evidence.