BYD P1A1000
BIC5 voltage sampling abnormal
Quick answer
BYD DTC P1A1000 means “BIC5 voltage sampling abnormal.” It is an HV-battery-system diagnostic code.
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1. What does P1A1000 mean?
BYD DTC P1A1000 means “BIC5 voltage sampling abnormal.” It is an HV-battery-system diagnostic code.
2. Technical explanation
Verified technical-manual index evidence identifies P1A1000 as “BIC5 voltage sampling abnormal.” The supplied evidence does not define BIC5 further, identify the exact failed component or circuit, or provide a diagnostic procedure.
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 is not yet established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged is not yet established by verified evidence.
9. What you can safely do
- Arrange diagnosis by a qualified BYD service provider or appropriately trained EV technician.
- Do not attempt high-voltage battery disassembly or high-voltage electrical repair.
10. Step-by-step troubleshooting
- A qualified service provider should confirm the stored DTC and follow the applicable BYD diagnostic information. Specific test steps are not provided in the verified evidence.
11. When to contact service
Service requirement is unknown in the supplied diagnostic record. Because this code concerns the HV battery system and no verified repair procedure is supplied, contact a qualified BYD service provider for diagnosis.
12. What the service center may check
- Confirm P1A1000 is present in the vehicle diagnostic system.
- Follow applicable BYD diagnostic information for P1A1000. Further specific 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
- No TSB or 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 material consists of technical-manual index entries that associate BYD P1A1000 with “BIC5 voltage sampling abnormal.” Evidence is listed for the BYD ATTO 3/Yuan Plus (SC2E), DOLPHIN 2021 family, and HAN 2023 Champion/Supreme family. The supplied sources are not identified as official BYD publications.
- 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 P1A1000 mean?
It means “BIC5 voltage sampling abnormal.”
Which system is associated with P1A1000?
The supplied diagnostic record identifies the affected system as the HV battery.
Which BYD vehicles are covered 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 P1A1000?
Driveability and charging suitability are not yet established by verified evidence.