BYD P1AE800
DC charging positive contactor echo check fault
Quick answer
P1AE800 on a BYD ATTO 3 is a DC charging positive contactor echo check fault. Verified applicability: 2022–2026 ATTO 3 / Yuan Plus (SC2E), Global.
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 P1AE800 mean?
P1AE800 on a BYD ATTO 3 is a DC charging positive contactor echo check fault. Verified applicability: 2022–2026 ATTO 3 / Yuan Plus (SC2E), Global.
2. Technical explanation
The verified diagnostic meaning is “DC charging positive contactor echo check fault.” It is assigned to the DC charging system. The supplied evidence does not establish the specific failed component, fault mechanism, charging impact, or repair procedure.
3. What system is affected?
DC charging
4. How serious is this code?
Unknown. Severity is not established by verified evidence.
5. Symptoms you may notice
- A stored P1AE800 diagnostic trouble code may be present.
- Further symptoms are 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 with P1AE800 is not established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether DC or AC charging remains available with P1AE800 is not established by verified evidence.
9. What you can safely do
- Do not attempt high-voltage contactor, wiring, or battery-system repairs.
- Have the fault assessed using appropriate BYD diagnostic and service information.
10. Step-by-step troubleshooting
- Confirm the stored DTC and any accompanying diagnostic information with suitable diagnostic equipment.
- Further troubleshooting steps are not yet established by verified evidence.
11. When to contact service
Service requirement is unknown in the supplied evidence. Because this code concerns the DC charging system, arrange assessment by a qualified BYD EV service provider; do not perform high-voltage repairs yourself.
12. What the service center may check
- Verify P1AE800 and review related diagnostic data using suitable service equipment.
- Additional service 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
- No technical service bulletins were supplied as verified evidence.
16. Recall information
- No recalls were supplied as verified evidence.
17. Official manufacturer information
Verified source: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” locator: ATTO 3 / Yuan Plus (SC2E) / P1AE800. The source identifies the fault as “DC charging positive contactor echo check fault.”
- OBDTotal technical manual index: BYD ATTO 3 diagnostic evidence · technical_manual
19. Frequently asked questions
What does BYD code P1AE800 mean?
It means “DC charging positive contactor echo check fault.”
Which vehicles are verified as applicable?
BYD ATTO 3 / Yuan Plus (SC2E), model years 2022–2026, Global.
Can I drive with P1AE800?
Not yet established by verified evidence.
Can I charge with P1AE800?
Not yet established by verified evidence.