EV Diagnostics
Verified EV diagnostic knowledge page

BYD P2B7200

Temperature sampling disconnected - general fault

DriveUnknown. Whether the vehicle can be driven is not established by verified evidence.
ChargeUnknown. Whether the vehicle can be charged is not established by verified evidence.
ServiceService requirement is not established by the verified evidence; however, qualified BYD EV diagnosis is appropriate because this code concerns the HV battery system.
Confidence95%

Quick answer

BYD DTC P2B7200 means “Temperature sampling disconnected - general fault” in the HV battery system.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

No sufficiently relevant embeddable video has been accepted for this diagnostic yet.

Videos are supporting material and never override OEM or regulator evidence.

1. What does P2B7200 mean?

BYD DTC P2B7200 means “Temperature sampling disconnected - general fault” in the HV battery system.

2. Technical explanation

Verified evidence identifies P2B7200 as an HV battery diagnostic trouble code for a general temperature-sampling disconnection fault. The supplied evidence does not establish the specific failed component, wiring location, operating conditions, diagnostic steps, or repair procedure.

3. What system is affected?

High-voltage (HV) battery temperature-sampling system.

4. How serious is this code?

Unknown. Severity is not established by the verified evidence.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • A temperature-sampling disconnection is indicated by the verified DTC meaning.
  • The specific cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. Whether the vehicle can be driven is not established by verified evidence.

8. Can I charge the vehicle?

Unknown. Whether the vehicle can be charged is not established by verified evidence.

9. What you can safely do

  • Arrange diagnosis by a qualified BYD EV service provider.
  • Do not attempt high-voltage battery disassembly or high-voltage repairs.

10. Step-by-step troubleshooting

  1. Use appropriate diagnostic equipment and service information through a qualified EV service provider.
  2. Further troubleshooting steps are not yet established by verified evidence.

11. When to contact service

Service requirement is not established by the verified evidence; however, qualified BYD EV diagnosis is appropriate because this code concerns the HV battery system.

12. What the service center may check

  • Confirm DTC P2B7200 and assess associated diagnostic data using appropriate service equipment.
  • Specific service checks 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

  • 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 technical-manual index evidence supports P2B7200 for BYD ATTO 3, DOLPHIN, and HAN applications listed below. Source material: OBDTotal technical manual index, “BYD ATTO 3 diagnostic evidence,” https://obdtotal.com/product/byd-atto3-yuanplus-sc2e-service-manual/; 17VIN technical manual index, “BYD DOLPHIN diagnostic evidence,” https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2123.html; and 17VIN technical manual index, “BYD HAN diagnostic evidence,” https://en.17vin.com/automotive_repair_manual_wiring_diagrams/BYD/2120.html. Last verified: 2026-09-25.

19. Frequently asked questions

What does BYD code P2B7200 mean?

It means “Temperature sampling disconnected - general fault” in the HV battery system.

Which BYD vehicles are supported by the supplied evidence?

BYD ATTO 3 model years 2022–2026 (Global), BYD DOLPHIN model years 2021–2026 (Global), and BYD HAN model year 2023 (Global).

Can I drive or charge with P2B7200?

Whether the vehicle can be driven or charged is not yet established by verified evidence.

20. Sources & verification

Verified
BYD P2B7200: Temperature sampling disconnected - general fault | EV Diagnostics