BYD P2B9213
High-voltage-side driver open circuit
Quick answer
BYD DTC P2B9213 means “High-voltage-side driver open circuit.” Verified evidence associates it with the HV battery system.
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 P2B9213 mean?
BYD DTC P2B9213 means “High-voltage-side driver open circuit.” Verified evidence associates it with the HV battery system.
2. Technical explanation
The verified diagnostic meaning for P2B9213 is “High-voltage-side driver open circuit.” The supplied evidence does not further identify the specific component, circuit location, operating conditions, root cause, or diagnostic procedure.
3. What system is affected?
HV battery
4. How serious is this code?
Unknown. The supplied verified evidence does not establish severity.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- An open circuit involving the high-voltage-side driver is indicated by the verified DTC meaning.
- The underlying cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The supplied verified evidence does not establish whether the vehicle can be driven with P2B9213 present.
8. Can I charge the vehicle?
Unknown. The supplied verified evidence does not establish whether charging is permitted with P2B9213 present.
9. What you can safely do
- Do not attempt high-voltage battery or high-voltage circuit repair yourself.
- Arrange diagnosis by a qualified BYD or EV high-voltage service technician.
- Record the DTC and any accompanying warning messages before service, if this can be done without interacting with high-voltage components.
10. Step-by-step troubleshooting
- Use manufacturer-approved diagnostic information and equipment to investigate the code. Specific test steps are not established by the supplied verified evidence.
- Do not disconnect, probe, or repair high-voltage components based on this code alone.
11. When to contact service
Service requirement is unknown in the supplied evidence. Because this DTC is associated with the HV battery system and identifies a high-voltage-side driver open circuit, qualified EV service diagnosis is appropriate.
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 P2B9213 as “High-voltage-side driver open circuit” for the applicable BYD vehicles. No official BYD repair procedure, 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 code P2B9213 mean?
It means “High-voltage-side driver open circuit.”
Which system is associated with P2B9213?
The supplied diagnostic record identifies the HV battery system.
Can I drive with P2B9213?
Not yet established by verified evidence.
Can I charge with P2B9213?
Not yet established by verified evidence.
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.