BYD P1A1300
BIC8 voltage sampling abnormal
Quick answer
BYD DTC P1A1300 means “BIC8 voltage sampling abnormal.” It is documented for specified BYD ATTO 3, DOLPHIN, and HAN applications.
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 P1A1300 mean?
BYD DTC P1A1300 means “BIC8 voltage sampling abnormal.” It is documented for specified BYD ATTO 3, DOLPHIN, and HAN applications.
2. Technical explanation
The verified diagnostic description identifies an abnormal voltage-sampling condition associated with BIC8 in the high-voltage battery system. The supplied evidence does not establish the underlying cause, the affected battery component location, diagnostic procedure, or repair method.
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. The supplied verified evidence does not establish whether the vehicle is safe to drive with P1A1300 present.
8. Can I charge the vehicle?
Unknown. The supplied verified evidence does not establish whether the vehicle is safe to charge with P1A1300 present.
9. What you can safely do
- Record the DTC exactly as P1A1300 and retain any accompanying diagnostic information.
- Arrange diagnosis by a qualified BYD service provider or appropriately trained EV technician.
- Do not attempt high-voltage battery repair or disassembly.
10. Step-by-step troubleshooting
- Use suitable diagnostic equipment to confirm P1A1300 and check for accompanying stored codes. Further diagnostic steps are not established by the supplied verified evidence.
- Do not perform high-voltage battery measurements, disassembly, or repairs without qualified EV high-voltage training and the applicable BYD service information.
11. When to contact service
Service requirement is unknown in the supplied evidence. Because this code concerns the HV battery system and no verified repair procedure is provided, seek assessment from a qualified BYD service provider or appropriately trained EV technician.
12. What the service center may check
- Confirm the presence and status of DTC P1A1300. Additional 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 source material consists of technical-manual index entries documenting P1A1300 as “BIC8 voltage sampling abnormal” for the listed BYD applications. No manufacturer-issued safety, repair, bulletin, or recall information 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 P1A1300 mean?
It means “BIC8 voltage sampling abnormal.”
Which system is associated with P1A1300?
The supplied diagnostic record identifies the system as the HV battery.
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 P1A1300?
Not yet established by verified evidence.