BYD C121200
Camera obstructed
Quick answer
For the BYD ATTO 3 (2022–2026, Global), DTC C121200 means “Camera obstructed.”
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 C121200 mean?
For the BYD ATTO 3 (2022–2026, Global), DTC C121200 means “Camera obstructed.”
2. Technical explanation
Verified diagnostic evidence identifies C121200 as an ADAS diagnostic trouble code with the meaning “Camera obstructed.” The available evidence does not further define which camera, the obstruction type, detection conditions, or the effect on individual driver-assistance features.
3. What system is affected?
ADAS
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- A C121200 diagnostic trouble code may be stored, indicating “Camera obstructed.” Further symptoms are not yet established by verified evidence.
6. Possible causes
- Camera obstruction. Additional underlying causes are 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
- Use the vehicle information display and applicable owner documentation for any active warning messages.
- Do not perform high-voltage or ADAS camera repair procedures without qualified service support.
- If the code remains present or ADAS warnings continue, arrange diagnosis by a qualified BYD service provider.
10. Step-by-step troubleshooting
- Verified evidence confirms only the diagnostic meaning “Camera obstructed.” Specific troubleshooting steps, camera location, cleaning procedure, calibration requirements, and inspection criteria are not yet established by verified evidence.
11. When to contact service
Service need is not yet established by verified evidence. Contact a qualified BYD service provider if C121200 remains stored or is accompanied by active warnings or reduced ADAS operation.
12. What the service center may check
- Confirm the presence and status of DTC C121200 using suitable diagnostic equipment.
- 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
- No technical service bulletins were supplied in the verified evidence.
16. Recall information
- No recalls were supplied in the verified evidence.
17. Official manufacturer information
Verified source: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: ATTO 3 / Yuan Plus (SC2E) / C121200. Applicability supplied: BYD ATTO 3, model years 2022–2026, Global.
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code C121200 mean?
For the BYD ATTO 3, C121200 means “Camera obstructed.”
Which BYD vehicles are covered by the supplied evidence?
The supplied applicability evidence covers the BYD ATTO 3 for model years 2022 through 2026 in the Global region.
Is it safe to drive with C121200?
Not yet established by verified evidence.
Does C121200 affect charging?
Not yet established by verified evidence.
Does this code require camera calibration or replacement?
Not yet established by verified evidence.