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BYD P1A2400

BIC5 temperature sampling abnormal

DriveUnknown. Safe-to-drive status is not established by verified evidence.
ChargeUnknown. Safe-to-charge status is not established by verified evidence.
ServiceService requirement is listed as unknown in the supplied diagnostic record. Because this DTC concerns the HV battery system, qualified BYD EV service assessment is appropriate.
Confidence95%

Quick answer

P1A2400 is a BYD HV-battery diagnostic trouble code (DTC) meaning “BIC5 temperature sampling abnormal.”

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 P1A2400 mean?

P1A2400 is a BYD HV-battery diagnostic trouble code (DTC) meaning “BIC5 temperature sampling abnormal.”

2. Technical explanation

Verified evidence identifies an abnormal temperature-sampling condition associated with BIC5 in the high-voltage (HV) battery system. The supplied evidence does not establish the underlying cause, vehicle behavior, diagnostic procedure, or repair.

3. What system is affected?

HV battery

4. How serious is this code?

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

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. 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

  • Do not attempt high-voltage battery diagnosis or repair yourself.
  • Arrange assessment by a qualified BYD EV service provider if the DTC is present.

10. Step-by-step troubleshooting

  1. Use qualified service diagnostic equipment to confirm and assess DTC P1A2400. Further troubleshooting steps are not established by the supplied verified evidence.

11. When to contact service

Service requirement is listed as unknown in the supplied diagnostic record. Because this DTC concerns the HV battery system, qualified BYD EV service assessment is appropriate.

12. What the service center may check

  • Confirm the presence and status of P1A2400 with approved diagnostic equipment.
  • Further service checks 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 technical-manual index evidence identifies P1A2400 as “BIC5 temperature sampling abnormal” for the listed BYD applications. No manufacturer-published repair procedure, recall, or service bulletin was supplied.

19. Frequently asked questions

What does BYD code P1A2400 mean?

It means “BIC5 temperature sampling abnormal” in the HV battery system.

Which BYD vehicles are supported by the supplied evidence?

BYD ATTO 3 model years 2022–2026 globally; BYD DOLPHIN model years 2021–2026 globally; and BYD HAN model year 2023 globally.

Can I drive or charge with P1A2400?

Safe-to-drive and safe-to-charge status are unknown; the supplied verified evidence does not establish either status.

What causes P1A2400?

The cause is not yet established by verified evidence.

20. Sources & verification

Verified
BYD P1A2400: BIC5 temperature sampling abnormal | EV Diagnostics