BYD P151100
AC high-voltage interlock fault
Quick answer
P151100 on a BYD ATTO 3 is identified as an AC high-voltage interlock fault.
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1. What does P151100 mean?
P151100 on a BYD ATTO 3 is identified as an AC high-voltage interlock fault.
2. Technical explanation
Verified diagnostic evidence defines P151100 as “AC high-voltage interlock fault” within the Charging/HV system. An interlock fault indicates that the vehicle has detected an issue related to the AC high-voltage interlock circuit. The supplied evidence does not establish the specific component, wiring condition, operating condition, or repair needed.
3. What system is affected?
Charging/HV
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 AC high-voltage interlock fault is identified by the diagnostic definition.
- Specific causes are not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The supplied verified evidence does not establish whether the vehicle can be driven with P151100 present.
8. Can I charge the vehicle?
Unknown. The supplied verified evidence does not establish whether the vehicle can charge with P151100 present.
9. What you can safely do
- Do not attempt high-voltage diagnosis, connector work, wiring repair, or component replacement without qualified EV high-voltage service training.
- Arrange professional diagnosis if the fault remains present.
10. Step-by-step troubleshooting
- Use appropriate professional diagnostic equipment to confirm P151100 and assess the Charging/HV system. Detailed diagnostic steps are not established by the supplied verified evidence.
- Do not perform high-voltage interlock testing or repairs without qualified EV high-voltage service procedures.
11. When to contact service
Professional EV service is appropriate because this code concerns the Charging/HV system. Urgency is not established by verified evidence.
12. What the service center may check
- Confirm the stored DTC P151100 using suitable diagnostic equipment.
- Perform diagnosis according to applicable BYD service information. Specific checks are not established by the supplied 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) / P151100. 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 P151100 mean?
It means AC high-voltage interlock fault.
Which vehicles does the supplied evidence cover?
The supplied applicability evidence covers the BYD ATTO 3, model years 2022–2026, GLOBAL region.
Can I drive or charge with P151100?
Not yet established by verified evidence.