BYD C11B013
Left EPB motor or line fault
Quick answer
C11B013 is a BYD EPB diagnostic trouble code meaning: Left EPB motor or line fault. Verified applicability is BYD ATTO 3 model years 2022–2026, Global-market coverage.
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 C11B013 mean?
C11B013 is a BYD EPB diagnostic trouble code meaning: Left EPB motor or line fault. Verified applicability is BYD ATTO 3 model years 2022–2026, Global-market coverage.
2. Technical explanation
The verified diagnostic evidence identifies C11B013 as an electronic parking brake (EPB) fault concerning the left EPB motor or its electrical line/circuit. The available evidence does not further distinguish whether the issue is in the motor, wiring, connector, control unit, or another part of the left EPB circuit.
3. What system is affected?
Electronic Parking Brake (EPB), left-side EPB motor/line circuit.
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
- A fault involving the left EPB motor or its electrical line/circuit is established by verified evidence.
- The specific failed component or condition 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 professional diagnosis of the EPB system.
- Do not attempt high-voltage or electrical repair procedures based on this code alone.
10. Step-by-step troubleshooting
- Confirm the stored code using suitable diagnostic equipment.
- Have a qualified service provider diagnose the left EPB motor and associated line/circuit. Further diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Service need is not yet established by verified evidence; however, professional diagnosis is appropriate because this code concerns the electronic parking brake system.
12. What the service center may check
- Read and confirm C11B013 with diagnostic equipment.
- Diagnose the left EPB motor and associated line/circuit. Specific inspection, test values, and repair procedures are not established by the supplied verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied evidence does not identify a confirmed repair or replacement procedure.
14. Affected vehicles
- BYD ATTO 3 · 2022–2026 · GLOBAL
15. Related TSBs / service bulletins
No related TSB or service-bulletin relationship is established by verified evidence.
16. Recall information
No recall relationship is 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) / C11B013. It identifies the code as “Left EPB motor or line fault.” No official manufacturer bulletin, recall, or repair procedure was supplied.
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code C11B013 mean?
It means “Left EPB motor or line fault.”
Which vehicles are verified as applicable?
BYD ATTO 3, model years 2022 through 2026, with Global region coverage.
Is it safe to drive with C11B013?
Not yet established by verified evidence.
Can the vehicle be charged with C11B013 present?
Not yet established by verified evidence.
What part needs to be replaced?
Not yet established by verified evidence. The evidence only identifies a left EPB motor or line/circuit fault and does not identify a specific failed part.