BYD P1AFC00
On-board charger high-voltage interlock fault
Quick answer
P1AFC00 indicates an on-board charger high-voltage interlock fault on applicable BYD ATTO 3 vehicles.
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 P1AFC00 mean?
P1AFC00 indicates an on-board charger high-voltage interlock fault on applicable BYD ATTO 3 vehicles.
2. Technical explanation
Verified diagnostic evidence defines P1AFC00 as an on-board charger high-voltage interlock fault. The supplied evidence does not specify the component-level cause, diagnostic conditions, or repair procedure.
3. What system is affected?
HV system; specifically, the on-board charger high-voltage interlock function.
4. How serious is this code?
Unknown. Severity is not established by the 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?
Unknown. Whether the vehicle can be driven is not established by the verified evidence.
8. Can I charge the vehicle?
Unknown. Whether the vehicle can be charged is not established by the verified evidence.
9. What you can safely do
- Do not attempt high-voltage system repairs.
- Arrange diagnosis by qualified BYD EV service personnel.
10. Step-by-step troubleshooting
- The verified evidence confirms the fault definition only. It does not provide an approved troubleshooting sequence.
11. When to contact service
Service need is not established by the verified evidence. Because this DTC concerns the high-voltage system and on-board charger interlock function, qualified BYD EV service personnel should perform any diagnosis or repair.
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 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 source: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: ATTO 3 / Yuan Plus (SC2E) / P1AFC00. The source identifies P1AFC00 as “On-board charger high-voltage interlock fault.”
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code P1AFC00 mean?
It means “On-board charger high-voltage interlock fault,” according to the verified diagnostic evidence.
Which vehicles are supported by the supplied evidence?
The supplied applicability evidence covers BYD ATTO 3 model years 2022 through 2026 in the GLOBAL region.
Can I drive or charge with P1AFC00?
Not yet established by verified evidence.
What repair fixes P1AFC00?
Not yet established by verified evidence. Do not attempt high-voltage repairs yourself.