BYD B22A813
Exterior trunk detection antenna open circuit
Quick answer
DTC B22A813 on a BYD ATTO 3 indicates: Exterior trunk detection antenna open circuit.
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 B22A813 mean?
DTC B22A813 on a BYD ATTO 3 indicates: Exterior trunk detection antenna open circuit.
2. Technical explanation
Verified diagnostic evidence identifies B22A813 as an open-circuit fault for the exterior trunk detection antenna in the Smart key system.
3. What system is affected?
Smart key system; exterior trunk detection antenna.
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
- Verified evidence establishes an open circuit associated with the exterior trunk detection antenna. The underlying cause of the open circuit is 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
- Arrange diagnosis by a qualified BYD service provider or technician.
- Do not attempt high-voltage-system repairs; this diagnostic concerns the Smart key system, but no repair procedure is established by the verified evidence.
10. Step-by-step troubleshooting
- Confirm the stored DTC is B22A813 using a compatible diagnostic tool.
- Have a qualified technician diagnose the exterior trunk detection antenna circuit. Specific test steps are not yet established by verified evidence.
11. When to contact service
Service requirement is not yet established by verified evidence. If the code remains stored or smart-key operation is affected, contact a BYD service provider for diagnosis.
12. What the service center may check
- Read and confirm DTC B22A813.
- Diagnose the exterior trunk detection antenna open circuit. Further 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
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 evidence source: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: ATTO 3 / Yuan Plus (SC2E) / B22A813. The supplied evidence applies to BYD ATTO 3 model years 2022–2026, Global region.
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code B22A813 mean?
It means “Exterior trunk detection antenna open circuit.”
Which system is affected by B22A813?
The Smart key system.
Does B22A813 mean the vehicle is unsafe to drive or charge?
Not yet established by verified evidence.
What vehicles does this evidence apply to?
BYD ATTO 3 / Yuan Plus (SC2E), model years 2022–2026, Global region.