BYD P1A2000
BIC1 temperature sampling abnormal
Quick answer
P1A2000 is a BYD HV-battery DTC meaning “BIC1 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 P1A2000 mean?
P1A2000 is a BYD HV-battery DTC meaning “BIC1 temperature sampling abnormal.”
2. Technical explanation
Verified evidence identifies this code as an abnormal temperature-sampling condition associated with BIC1 in the high-voltage battery system. The supplied evidence does not establish the specific failed component, operating conditions that set the code, or a repair procedure.
3. What system is affected?
High-voltage battery (HV battery).
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
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Safe-to-drive status is not established by the supplied verified evidence.
8. Can I charge the vehicle?
Unknown. Safe-to-charge status is not established by the supplied verified evidence.
9. What you can safely do
- Do not attempt high-voltage battery disassembly or electrical repair.
- Have the vehicle assessed by appropriately qualified BYD service personnel.
10. Step-by-step troubleshooting
- A diagnostic scan should confirm whether P1A2000 is present. Further diagnostic steps are not established by the supplied verified evidence.
- Not yet established by verified evidence whether the code is current, intermittent, or accompanied by additional DTCs.
11. When to contact service
Service requirement is recorded as unknown. Because this DTC concerns the HV battery, seek assessment from qualified BYD service personnel rather than attempting HV-battery repair.
12. What the service center may check
- Confirm DTC P1A2000 using suitable 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 P1A2000 as “BIC1 temperature sampling abnormal” for BYD ATTO 3 / Yuan Plus (SC2E), BYD DOLPHIN 2021 family, and BYD HAN 2023 Champion/Supreme family. Sources: OBDTotal technical manual index, https://obdtotal.com/product/byd-atto3-yuanplus-sc2e-service-manual/; 17VIN technical manual indexes, https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2123.html and https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2120.html. Applicability in the supplied evidence: ATTO 3 model years 2022–2026, DOLPHIN model years 2021–2026, and HAN model year 2023, Global region.
- 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 P1A2000 mean?
It means “BIC1 temperature sampling abnormal” in the HV battery system.
Which vehicles are supported by the supplied evidence?
BYD ATTO 3 (2022–2026), DOLPHIN (2021–2026), and HAN (2023), Global region.
Can I drive or charge with P1A2000?
Safe-to-drive and safe-to-charge status are not established by the supplied verified evidence.