BYD B12414B
Driver-side IGBT overheating (PTC)
Quick answer
DTC B12414B means “Driver-side IGBT overheating (PTC)” on the 2024 BYD SEALION 7 / Sealion 07 EV, based on the verified technical-manual evidence supplied.
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 B12414B mean?
DTC B12414B means “Driver-side IGBT overheating (PTC)” on the 2024 BYD SEALION 7 / Sealion 07 EV, based on the verified technical-manual evidence supplied.
2. Technical explanation
The verified evidence identifies B12414B as a HVAC/PTC diagnostic trouble code for driver-side IGBT overheating. An IGBT is a power electronic switching device; however, the supplied evidence does not establish the specific component location, operating conditions, root cause, diagnostic thresholds, or repair procedure.
3. What system is affected?
HVAC/PTC system.
4. How serious is this code?
Not yet established by verified evidence.
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?
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 or power-electronics repair based on this code alone.
- Arrange diagnosis by a qualified BYD service provider if the code is present.
10. Step-by-step troubleshooting
- Confirm the reported DTC is B12414B using an appropriate diagnostic tool.
- Further troubleshooting steps are not yet established by verified evidence.
11. When to contact service
Service requirement is not established by the supplied evidence. Because this code concerns PTC power electronics, use a qualified BYD service provider for diagnosis rather than attempting high-voltage repairs.
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 SEALION 7 · 2024 · GLOBAL
15. Related TSBs / service bulletins
- No technical service bulletin information was supplied in the verified evidence.
16. Recall information
- No recall information was supplied in the verified evidence.
17. Official manufacturer information
Verified source: 17VIN technical manual index, “BYD SEALION 7 diagnostic evidence,” locator: “SEALION 7 | Sealion 07 EV / 2024 | B12414B.” The supplied evidence applies to BYD SEALION 7 / Sealion 07 EV, model year 2024, global region.
- 17VIN technical manual index: BYD SEALION 7 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code B12414B mean?
It means “Driver-side IGBT overheating (PTC)” according to the verified technical-manual evidence supplied.
Which vehicle is B12414B verified for?
The supplied evidence verifies applicability for the 2024 BYD SEALION 7 / Sealion 07 EV in the global region.
Can I drive or charge with B12414B?
Not yet established by verified evidence.
What repairs fix B12414B?
Not yet established by verified evidence.