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BYD U024E87

Communication with ESC failed

DriveUnknown. Do not assume the vehicle is safe to drive based solely on this code; safe-to-drive status is not established by verified evidence.
ChargeUnknown. Safe-to-charge status is not established by verified evidence.
ServiceService requirement is unknown in the supplied evidence. Because this code identifies failed communication with the ESC/chassis network, professional diagnosis is appropriate.
Confidence95%

Quick answer

BYD DTC U024E87 means communication with the ESC has failed. Verified applicability: BYD ATTO 3 (2022–2026, Global) and BYD SEALION 7 (2024, 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 U024E87 mean?

BYD DTC U024E87 means communication with the ESC has failed. Verified applicability: BYD ATTO 3 (2022–2026, Global) and BYD SEALION 7 (2024, Global).

2. Technical explanation

Verified technical-manual evidence identifies U024E87 as a terminal communication failure with the ESC/chassis network, or “Communication with ESC failed.” The supplied evidence does not establish the specific failed component, wiring fault, repair procedure, or operating impact.

3. What system is affected?

Network / ESC (Electronic Stability Control) communication, described in the evidence as the ESC/chassis network.

4. How serious is this code?

Unknown. The supplied verified evidence does not assign a severity level.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • A communication failure involving the ESC/chassis network is established by the diagnostic meaning.
  • The underlying cause of that communication failure is not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. Do not assume the vehicle is safe to drive based solely on this code; safe-to-drive status is not established by verified evidence.

8. Can I charge the vehicle?

Unknown. Safe-to-charge status is not established by verified evidence.

9. What you can safely do

  • Record the exact DTC, vehicle model, model year, and any other displayed warnings before arranging diagnosis.
  • Have the vehicle assessed by a qualified BYD service provider or appropriately qualified technician.
  • Do not attempt high-voltage system repair based on this code.

10. Step-by-step troubleshooting

  1. Use suitable diagnostic equipment to confirm U024E87 and identify any accompanying diagnostic information. Further diagnostic steps are not established by the supplied verified evidence.

11. When to contact service

Service requirement is unknown in the supplied evidence. Because this code identifies failed communication with the ESC/chassis network, professional diagnosis is appropriate.

12. What the service center may check

  • Confirm the stored U024E87 code and check for accompanying diagnostic information. Specific inspection or test procedures are not yet established by verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

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 database sources: 17VIN technical manual index, “BYD SEALION 7 diagnostic evidence,” locator: “SEALION 7 | Sealion 07 EV / 2024 | U024E87”; and OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: “ATTO 3 | ATTO 3 / Yuan Plus (SC2E) | U024E87.”

19. Frequently asked questions

What does BYD code U024E87 mean?

It means communication with the ESC has failed. The SEALION 7 evidence further describes it as a terminal communication failure with the ESC/chassis network.

Which BYD vehicles are verified as applicable?

BYD ATTO 3 for model years 2022–2026 in the Global region, and BYD SEALION 7 for model year 2024 in the Global region.

Can I drive with U024E87?

Not yet established by verified evidence. The supplied data lists safe-to-drive status as unknown.

Can I charge with U024E87?

Not yet established by verified evidence. The supplied data lists safe-to-charge status as unknown.

20. Sources & verification

Verified
BYD U024E87: Communication with ESC failed | EV Diagnostics