BYD B1CE300
Light sensor fault
Quick answer
BYD DTC B1CE300 means “Light sensor fault.” Verified applicability: 2024 BYD SEALION 7, Global market.
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1. What does B1CE300 mean?
BYD DTC B1CE300 means “Light sensor fault.” Verified applicability: 2024 BYD SEALION 7, Global market.
2. Technical explanation
The verified technical-manual evidence identifies B1CE300 as a Body sensor diagnostic trouble code for a light sensor fault. The available evidence does not further identify the failed component, operating conditions that set the code, or a specified diagnostic procedure.
3. What system is affected?
Body sensor / light sensor.
4. How serious is this code?
Unknown. Severity is not established by verified evidence.
5. Symptoms you may notice
- A light sensor fault is indicated by DTC B1CE300.
- Other symptoms are not yet established by verified evidence.
6. Possible causes
- A light sensor fault is identified by the verified evidence.
- Specific underlying causes are not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven with B1CE300 is not yet established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged with B1CE300 is not yet established by verified evidence.
9. What you can safely do
- Record the code exactly as B1CE300 and note any accompanying warnings or changes in vehicle behavior.
- Arrange diagnosis by a qualified BYD service provider if the code remains present.
- Do not attempt high-voltage system repair based on this code.
10. Step-by-step troubleshooting
- Use appropriate diagnostic equipment to confirm whether B1CE300 is current or stored.
- Further troubleshooting steps are not yet established by verified evidence.
11. When to contact service
Service requirement is unknown in the supplied evidence. Contact a qualified BYD service provider for diagnosis if the fault remains present or warnings occur.
12. What the service center may check
- Confirm DTC B1CE300 using suitable diagnostic equipment.
- Additional service checks are not yet established by verified evidence.
13. Possible repair or resolution
- A specific repair resolution is 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 or verified for this code.
16. Recall information
- No recall information was supplied or verified for this code.
17. Official manufacturer information
Verified source: 17VIN technical manual index, “BYD SEALION 7 diagnostic evidence,” locator: “SEALION 7 | Sealion 07 EV / 2024 | B1CE300.” https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2122.html. Last verified: 2026-09-25.
- 17VIN technical manual index: BYD SEALION 7 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code B1CE300 mean?
It means “Light sensor fault,” according to the supplied verified technical-manual evidence.
Which vehicle is B1CE300 verified for?
The supplied evidence verifies applicability to the 2024 BYD SEALION 7 in the Global region.
Is it safe to drive or charge with B1CE300?
This is not yet established by verified evidence.
What repair fixes B1CE300?
A specific repair is not yet established by verified evidence.