BYD P1A0C00
BIC1 voltage sampling abnormal
Quick answer
P1A0C00 is identified for applicable BYD vehicles as “BIC1 voltage sampling abnormal” in the HV battery system.
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1. What does P1A0C00 mean?
P1A0C00 is identified for applicable BYD vehicles as “BIC1 voltage sampling abnormal” in the HV battery system.
2. Technical explanation
Verified technical-manual index evidence identifies P1A0C00 as an HV-battery diagnostic trouble code for an abnormal BIC1 voltage-sampling condition. The supplied evidence does not define BIC1 further, specify failure criteria, or provide a diagnostic or repair procedure.
3. What system is affected?
HV battery
4. How serious is this code?
Unknown. Severity is not established by the verified evidence.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- An abnormal BIC1 voltage-sampling condition is identified by the code definition.
- Specific underlying causes are not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven is not established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged is not established by verified evidence.
9. What you can safely do
- Record the DTC exactly as P1A0C00 and retain any accompanying diagnostic information.
- Use qualified EV service personnel for HV-battery diagnosis. Do not attempt high-voltage battery repair based on this code definition alone.
10. Step-by-step troubleshooting
- No step-by-step troubleshooting procedure is established by the supplied verified evidence.
- A qualified technician can consult the applicable BYD technical information for the vehicle and model year.
11. When to contact service
Service requirement is unknown in the supplied evidence. Because this code concerns the HV battery, qualified BYD EV service support is appropriate for diagnosis.
12. What the service center may check
- 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 P1A0C00 as “BIC1 voltage sampling abnormal” for BYD ATTO 3 / Yuan Plus (SC2E), BYD DOLPHIN 2021 family, and BYD HAN 2023 Champion/Supreme family. Source references: OBDTotal technical manual index, ATTO 3 / Yuan Plus (SC2E), https://obdtotal.com/product/byd-atto3-yuanplus-sc2e-service-manual/; 17VIN technical manual index, DOLPHIN, https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2123.html; 17VIN technical manual index, HAN, https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2120.html.
- 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 P1A0C00 mean?
It means “BIC1 voltage sampling abnormal” in the HV battery system, according to the supplied verified technical-manual index evidence.
Which vehicles are supported by the verified 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 P1A0C00?
Not yet established by verified evidence.