BYD U018087
Communication with high-voltage-side drive lost
Quick answer
BYD DTC U018087 means “Communication with high-voltage-side drive lost.” Verified applicability includes the 2022–2026 BYD ATTO 3 (global) and 2023 BYD HAN (global).
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 U018087 mean?
BYD DTC U018087 means “Communication with high-voltage-side drive lost.” Verified applicability includes the 2022–2026 BYD ATTO 3 (global) and 2023 BYD HAN (global).
2. Technical explanation
Verified technical-manual evidence identifies U018087 as a communication-loss fault involving the high-voltage-side drive. The available evidence does not establish the specific module, network path, root cause, vehicle behavior, or repair procedure.
3. What system is affected?
HV battery/network; communication with the high-voltage-side drive.
4. How serious is this code?
Unknown. Severity is not yet established by verified evidence.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- A loss of communication with the high-voltage-side drive is established by the DTC meaning.
- The underlying cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven with U018087 is not yet established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged with U018087 is not yet established by verified evidence.
9. What you can safely do
- Do not attempt high-voltage-system repair or disassembly.
- Have the fault assessed using appropriate BYD diagnostic information and qualified service personnel.
10. Step-by-step troubleshooting
- Confirm the stored DTC and obtain any accompanying diagnostic information with a suitable scan tool.
- Do not perform high-voltage diagnostic or repair work unless performed by qualified personnel.
- Specific diagnostic test steps are not yet established by verified evidence.
11. When to contact service
Service requirement is unknown in the supplied evidence. Because the code concerns high-voltage-side communication, qualified BYD service assessment is appropriate; urgency is not established by verified evidence.
12. What the service center may check
- Verify U018087 and check for accompanying diagnostic trouble codes.
- Further service checks are not yet established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- BYD ATTO 3 · 2022–2026 · GLOBAL
- BYD HAN · 2023 · GLOBAL
15. Related TSBs / service bulletins
- Not yet established by verified evidence.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified evidence is from technical-manual indexes: OBDTotal technical manual index for BYD ATTO 3 / Yuan Plus (SC2E), locator “U018087”; and 17VIN technical manual index for the 2023 BYD HAN Champion/Supreme family, locator “U018087.” Neither supplied record provides an OEM recall, bulletin, or repair instruction.
- 17VIN technical manual index: BYD HAN diagnostic evidence · technical_manual
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD U018087 mean?
It means “Communication with high-voltage-side drive lost.”
Which vehicles are verified as applicable?
The supplied evidence verifies global 2022–2026 BYD ATTO 3 and global 2023 BYD HAN applicability.
Is it safe to drive or charge?
Not yet established by verified evidence.
What repairs fix U018087?
Not yet established by verified evidence.