BYD P1ACC07
DC charging negative contactor sintered
Quick answer
P1ACC07 is a BYD diagnostic trouble code meaning: “DC charging negative contactor sintered.” Verified applicability is BYD ATTO 3 model years 2022–2026, Global region.
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 P1ACC07 mean?
P1ACC07 is a BYD diagnostic trouble code meaning: “DC charging negative contactor sintered.” Verified applicability is BYD ATTO 3 model years 2022–2026, Global region.
2. Technical explanation
The verified diagnostic evidence identifies P1ACC07 as a DTC in the DC charging system. Its documented meaning is “DC charging negative contactor sintered.” No further operating logic, failure mechanism, or component-level repair procedure is established by the supplied evidence.
3. What system is affected?
DC charging
4. How serious is this code?
Unknown. Severity is not yet established by verified evidence.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- The verified code meaning identifies a DC charging negative contactor as involved. The underlying cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. Whether the vehicle can be driven is not yet established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether charging can continue is not yet established by verified evidence.
9. What you can safely do
- Do not attempt high-voltage contactor diagnosis, disassembly, or repair.
- Arrange professional diagnosis if the code is present.
10. Step-by-step troubleshooting
- Confirm the stored DTC using suitable diagnostic equipment.
- Have a qualified BYD service provider diagnose the DC charging system. Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Professional service is recommended because this DTC concerns the DC charging system and a contactor. The supplied evidence does not establish urgency or drivability.
12. What the service center may check
- Read and confirm P1ACC07 with diagnostic equipment.
- Diagnose the DC charging negative contactor and associated system according to applicable BYD service information. Specific test procedures 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 bulletin information was supplied in the verified evidence.
16. Recall information
- No recall information was 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) / P1ACC07. The supplied evidence has a confidence value of 0.9500 and was last verified on 2026-09-25.
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code P1ACC07 mean?
It means “DC charging negative contactor sintered.”
Which vehicles are verified to use P1ACC07?
BYD ATTO 3 vehicles from model years 2022 through 2026 in the Global region.
Can I drive with P1ACC07?
Not yet established by verified evidence.
Can I charge with P1ACC07?
Not yet established by verified evidence.