BYD P157A37
Charging grid frequency high
Quick answer
P157A37 on a BYD ATTO 3 indicates: Charging grid frequency high. The verified evidence associates it with the OBC (on-board charger) system.
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 P157A37 mean?
P157A37 on a BYD ATTO 3 indicates: Charging grid frequency high. The verified evidence associates it with the OBC (on-board charger) system.
2. Technical explanation
Verified diagnostic evidence defines P157A37 as “Charging grid frequency high.” This means the OBC has detected a charging-grid frequency condition identified as high. The supplied evidence does not establish the threshold, charging behavior, root cause, or repair procedure.
3. What system is affected?
OBC (on-board charger).
4. How serious is this code?
Unknown. Severity is not established by the verified evidence.
5. Symptoms you may notice
- Charging grid frequency high is recorded as DTC P157A37.
- Other 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 P157A37 is not established by verified evidence.
8. Can I charge the vehicle?
Unknown. Whether charging can continue with P157A37 is not established by verified evidence.
9. What you can safely do
- Do not attempt high-voltage or on-board-charger repairs.
- Record the DTC and the charging circumstances in which it occurred.
- Use qualified BYD service personnel for diagnosis if assistance is needed.
10. Step-by-step troubleshooting
- Confirm the stored code is P157A37 using suitable diagnostic equipment.
- Document the charger or grid context associated with the code if available.
- Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Service requirement is unknown in the supplied evidence. Contact a qualified BYD service provider for diagnosis, particularly if the code recurs or charging is affected.
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
- No TSB or 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) / P157A37. The supplied applicability evidence covers 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 P157A37 mean?
It means “Charging grid frequency high.”
What system is associated with P157A37?
The verified evidence associates it with the OBC, or on-board charger, system.
Which vehicles are covered by the supplied evidence?
BYD ATTO 3, model years 2022 through 2026, GLOBAL region.
Can I drive or charge with P157A37?
Whether the vehicle can be driven or charged is not yet established by verified evidence.