BYD P1A0500
BIC4 working abnormal
Quick answer
BYD DTC P1A0500 means “BIC4 working abnormal.” Verified evidence identifies it as an HV battery-system diagnostic code, but does not establish driving, charging, or repair guidance.
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 P1A0500 mean?
BYD DTC P1A0500 means “BIC4 working abnormal.” Verified evidence identifies it as an HV battery-system diagnostic code, but does not establish driving, charging, or repair guidance.
2. Technical explanation
P1A0500 is a BYD manufacturer-specific DTC assigned the meaning “BIC4 working abnormal.” The available verified technical-manual index evidence consistently uses this wording for the listed BYD vehicles. No further verified explanation of BIC4 operation, fault criteria, root cause, or required repair is provided.
3. What system is affected?
HV battery
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
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven with P1A0500 is not yet established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged with P1A0500 is not yet established by verified evidence.
9. What you can safely do
- Record the exact DTC P1A0500 and any accompanying diagnostic codes.
- Arrange diagnosis by a qualified BYD service provider or EV-qualified technician.
- Do not attempt high-voltage battery diagnosis or repair without appropriate training and manufacturer procedures.
10. Step-by-step troubleshooting
- Use approved diagnostic equipment and applicable BYD service information to confirm P1A0500. Further troubleshooting steps are not yet established by verified evidence.
11. When to contact service
Service requirement is unknown in the supplied evidence. Because this code is assigned to the HV battery system, contact a qualified BYD service provider for diagnosis.
12. What the service center may check
- Confirm the presence and status of DTC P1A0500 using 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
- BYD ATTO 3 · 2022–2026 · GLOBAL
- BYD DOLPHIN · 2021–2026 · 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 technical-manual index evidence lists P1A0500 as “BIC4 working abnormal” for the specified BYD applications. No official BYD bulletin, recall, or detailed repair procedure was supplied.
- 17VIN technical manual index: BYD DOLPHIN diagnostic evidence · technical_manual
- 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 code P1A0500 mean?
It means “BIC4 working abnormal.”
What system is affected by P1A0500?
The supplied diagnostic record identifies the affected system as the HV battery.
Can I drive with P1A0500?
Not yet established by verified evidence.
Can I charge with P1A0500?
Not yet established by verified evidence.
Which BYD vehicles are covered by the supplied evidence?
BYD ATTO 3 model years 2022–2026 (Global), BYD DOLPHIN model years 2021–2026 (Global), and BYD HAN model year 2023 (Global).