BYD P1AFB00
Air-conditioning high-voltage interlock fault
Quick answer
P1AFB00 on a BYD ATTO 3 is identified as an air-conditioning high-voltage interlock fault.
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 P1AFB00 mean?
P1AFB00 on a BYD ATTO 3 is identified as an air-conditioning high-voltage interlock fault.
2. Technical explanation
Verified diagnostic evidence defines P1AFB00 as “Air-conditioning high-voltage interlock fault” in the HV system. This indicates the fault is associated with the air-conditioning high-voltage interlock circuit or its monitored status. Further fault mechanism, triggering conditions, and component-level cause are not yet established by verified evidence.
3. What system is affected?
HV system; specifically the air-conditioning high-voltage interlock function.
4. How serious is this code?
Unknown. The supplied verified evidence does not assign a severity level.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- An air-conditioning high-voltage interlock fault is recorded.
- Specific underlying causes are not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The supplied verified evidence does not establish whether driving is safe with P1AFB00 present.
8. Can I charge the vehicle?
Unknown. The supplied verified evidence does not establish whether charging is safe with P1AFB00 present.
9. What you can safely do
- Do not attempt high-voltage system repairs or disconnection procedures.
- Arrange diagnosis by a qualified BYD EV service provider or technician trained to work on high-voltage vehicles.
10. Step-by-step troubleshooting
- A qualified technician should retrieve and assess P1AFB00 using suitable diagnostic equipment.
- Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Service requirement is listed as unknown in the supplied diagnostic record. Because this code concerns the HV system and an air-conditioning high-voltage interlock fault, professional high-voltage EV diagnosis is appropriate.
12. What the service center may check
- Confirm the presence and status of DTC P1AFB00.
- Perform further checks according to applicable BYD service information. Specific 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 is from the OBDTotal technical manual index, titled “BYD ATTO 3 diagnostic evidence,” locator: “ATTO 3 | ATTO 3 / Yuan Plus (SC2E) | P1AFB00.” It identifies P1AFB00 as “Air-conditioning high-voltage interlock fault.” Applicability is verified for 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 P1AFB00 mean?
It means “Air-conditioning high-voltage interlock fault.”
Which vehicles are verified as applicable for P1AFB00?
BYD ATTO 3 vehicles for model years 2022 through 2026 in the global region.
Can I drive with P1AFB00?
Not yet established by verified evidence.
Can I charge with P1AFB00?
Not yet established by verified evidence.
What repair fixes P1AFB00?
Not yet established by verified evidence. Diagnosis and repair should be performed by personnel qualified for high-voltage EV systems.