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BMW 031B97

AC charging, charging interface, charging plug detection: Electrical error

DriveNot yet established by verified evidence.
ChargeCharging may not be possible when this condition occurs. The supplied evidence describes cable non-detection with either AC or DC charging.
ServiceContact BMW service or a qualified service facility for diagnosis, particularly if the vehicle does not detect charging cables or displays “Charging not possible.”
Confidence97%

Quick answer

BMW fault code 031B97 means: “AC charging, charging interface, charging plug detection: Electrical error.” Verified evidence links it to a condition where the vehicle may not detect a charging cable and may display “Charging not possible.”

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 031B97 mean?

BMW fault code 031B97 means: “AC charging, charging interface, charging plug detection: Electrical error.” Verified evidence links it to a condition where the vehicle may not detect a charging cable and may display “Charging not possible.”

2. Technical explanation

NHTSA Manufacturer Communication 10228425 (B120322), published November 1, 2022, identifies fault 031B97 in the CCU as an electrical error involving AC charging, the charging interface, and charging-plug detection. The communication describes that the vehicle may fail to detect a charging cable with either AC or DC charging.

3. What system is affected?

Charging interface / charging-plug detection, with fault storage in the CCU.

4. How serious is this code?

Unknown. The supplied verified evidence does not assign a severity level.

5. Symptoms you may notice

  • The vehicle does not detect a charging cable with either AC or DC charging.
  • The charging-indicator LED at the high-voltage charging socket is permanently white.
  • The Check Control message “Charging not possible” is displayed sporadically.
  • Fault code 031B97 is stored in the CCU.

6. Possible causes

  • An electrical error involving AC charging, the charging interface, and charging-plug detection.
  • Further root cause 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?

Charging may not be possible when this condition occurs. The supplied evidence describes cable non-detection with either AC or DC charging.

9. What you can safely do

  • If “Charging not possible” is displayed or the cable is not detected, arrange diagnosis by BMW service or a qualified service facility.
  • Record the displayed message, charging-indicator LED behavior, charging type attempted, and fault code if available.
  • Do not attempt high-voltage charging-interface repairs.

10. Step-by-step troubleshooting

  1. The verified communication identifies 031B97 as a CCU-stored fault code. Further diagnostic steps are not provided in the supplied evidence.
  2. Do not perform high-voltage repair procedures based on this information.

11. When to contact service

Contact BMW service or a qualified service facility for diagnosis, particularly if the vehicle does not detect charging cables or displays “Charging not possible.”

12. What the service center may check

  • Check for fault code 031B97 stored in the CCU.
  • Assess the reported charging-cable detection condition, charging-socket LED behavior, and “Charging not possible” Check Control message. Further service checks are not established by the supplied evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication 10228425: B120322, published November 1, 2022. It documents 031B97 and the described charging-cable non-detection condition.

16. Recall information

  • No recall information is established by the supplied verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication 10228425 (B120322): https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2020-2024.zip#nhtsa_id=10228425

19. Frequently asked questions

What does BMW code 031B97 mean?

It means “AC charging, charging interface, charging plug detection: Electrical error.”

What symptoms are associated with 031B97?

Verified evidence describes possible charging-cable non-detection with AC or DC charging, a permanently white charging-socket LED, and a sporadic “Charging not possible” message.

Does 031B97 affect DC charging too?

The supplied NHTSA communication states that, with this condition, the vehicle does not detect a charging cable with either AC or DC charging.

Which vehicle is covered by the supplied applicability evidence?

BMW i4, model year 2022, US region.

Is a specific repair established for 031B97?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
BMW 031B97: AC charging, charging interface, charging plug detection:… | EV Diagnostics