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BYD P157B00

AC-side overcurrent

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService requirement is not yet established by verified evidence. Professional diagnosis is appropriate because the code concerns the on-board charger AC side.
Confidence95%

Quick answer

BYD DTC P157B00 means “AC-side overcurrent” in the OBC (on-board charger) system. Verified applicability: BYD ATTO 3 model years 2022–2026, Global specification.

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 P157B00 mean?

BYD DTC P157B00 means “AC-side overcurrent” in the OBC (on-board charger) system. Verified applicability: BYD ATTO 3 model years 2022–2026, Global specification.

2. Technical explanation

The verified diagnostic meaning for P157B00 is AC-side overcurrent. The affected system is identified as the OBC, or on-board charger. This evidence establishes the code description, but does not establish the precise component-level cause, charging behavior, or repair procedure.

3. What system is affected?

OBC (on-board charger), specifically the AC side.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • AC-side overcurrent is the verified fault description.
  • The underlying cause of the overcurrent is not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Do not attempt high-voltage diagnosis or repair based on this code alone.
  • Arrange professional diagnosis if the code is present or returns.

10. Step-by-step troubleshooting

  1. Confirm the stored DTC using suitable diagnostic equipment.
  2. Record whether P157B00 is current, pending, or stored, if the diagnostic equipment provides that status.
  3. Further diagnostic steps are not yet established by verified evidence.

11. When to contact service

Service requirement is not yet established by verified evidence. Professional diagnosis is appropriate because the code concerns the on-board charger AC side.

12. What the service center may check

  • Verify P157B00 and review available diagnostic data.
  • Specific inspection tests and specifications are not yet established by verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

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) / P157B00. It identifies P157B00 as “AC-side overcurrent.”

19. Frequently asked questions

What does BYD code P157B00 mean?

Verified evidence identifies P157B00 as AC-side overcurrent in the OBC system.

Which vehicles are covered by the verified evidence?

BYD ATTO 3, model years 2022 through 2026, Global region.

Can I drive or charge with P157B00?

Not yet established by verified evidence.

20. Sources & verification

Verified
BYD P157B00: AC-side overcurrent | EV Diagnostics