BYD P1A3922
Power battery cell temperature seriously high
Quick answer
BYD DTC P1A3922 means “Power battery cell temperature seriously high.” Verified applicability: BYD ATTO 3, model years 2022–2026, Global.
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 P1A3922 mean?
BYD DTC P1A3922 means “Power battery cell temperature seriously high.” Verified applicability: BYD ATTO 3, model years 2022–2026, Global.
2. Technical explanation
The verified diagnostic evidence identifies P1A3922 as an HV-battery fault indicating that a power-battery cell temperature is seriously high. The supplied evidence does not establish the temperature threshold, triggering conditions, affected cell or module, warning behavior, vehicle limitations, or required repair.
3. What system is affected?
High-voltage (HV) power battery.
4. How serious is this code?
The diagnostic title describes a seriously high power-battery cell temperature. A severity classification is not yet established by verified evidence.
5. Symptoms you may notice
- A stored P1A3922 diagnostic trouble code may be present. Other symptoms are not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Do not attempt high-voltage battery diagnosis, disassembly, or repair.
- Arrange assessment by a qualified BYD service provider or EV technician.
- Record the DTC and any displayed vehicle messages for the service visit.
10. Step-by-step troubleshooting
- A qualified technician can retrieve and assess DTC P1A3922 using appropriate diagnostic equipment. Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Service requirement is not explicitly established by the supplied evidence. Because this code concerns HV-battery cell temperature, seek qualified BYD/EV service assessment rather than attempting HV-battery work yourself.
12. What the service center may check
- Confirm P1A3922 and review associated diagnostic information. Additional verified service checks are not yet established by the supplied evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- BYD ATTO 3 · 2022–2026 · 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: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: ATTO 3 / Yuan Plus (SC2E) / P1A3922. The source identifies the code meaning as “Power battery cell temperature seriously high.”
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code P1A3922 mean?
It means “Power battery cell temperature seriously high.”
Which vehicles are verified as applicable?
BYD ATTO 3 vehicles for model years 2022–2026 in the Global region.
Can I drive or charge with P1A3922?
Not yet established by verified evidence.
What causes P1A3922?
Not yet established by verified evidence.