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Chevrolet U01B0

Lost Communication with Battery Monitor Module • U0284: Lost Communication with Active Grille Air Shutter 1 Motor Module • U0285: Lost Communication with Active Grille Air Shutter

DriveUnknown. The supplied evidence does not establish whether the vehicle is safe to drive with U01B0.
ChargeUnknown. The supplied evidence does not establish whether the vehicle is safe to charge with U01B0.
ServiceProfessional service is appropriate because the supplied evidence identifies a communication DTC but does not establish a customer-performed diagnosis or repair.
Confidence95%

Quick answer

U01B0 is identified as “Lost Communication with Battery Monitor Module.” Verified Chevrolet applicability is 2021–2023 Bolt EV and Bolt EUV in the United States. The supplied official bulletin evidence also lists U0284 and U0285 among DTCs that may be observed on a scan tool.

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 U01B0 mean?

U01B0 is identified as “Lost Communication with Battery Monitor Module.” Verified Chevrolet applicability is 2021–2023 Bolt EV and Bolt EUV in the United States. The supplied official bulletin evidence also lists U0284 and U0285 among DTCs that may be observed on a scan tool.

2. Technical explanation

The verified diagnostic title/meaning identifies U01B0 as lost communication with the Battery Monitor Module. The supplied NHTSA-hosted Chevrolet manufacturer communication, 15-NA-087, states that a technician may observe U01B0 on a scan tool along with other listed DTCs. The supplied evidence does not establish a specific root cause, diagnostic procedure, or repair for U01B0.

3. What system is affected?

Battery Monitor Module communication. No further system description is established by the supplied verified evidence.

4. How serious is this code?

Unknown. The supplied evidence does not establish severity.

5. Symptoms you may notice

  • U01B0 may be observed on a scan tool, according to Chevrolet manufacturer communication 15-NA-087.
  • No driver-visible symptoms are established by the supplied verified evidence.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied evidence does not establish whether the vehicle is safe to drive with U01B0.

8. Can I charge the vehicle?

Unknown. The supplied evidence does not establish whether the vehicle is safe to charge with U01B0.

9. What you can safely do

  • Record all diagnostic trouble codes shown by the scan tool.
  • Arrange professional diagnosis using applicable Chevrolet service information.
  • Do not attempt high-voltage battery or electrical-system repairs yourself.

10. Step-by-step troubleshooting

  1. Confirm that U01B0 is present with an appropriate scan tool.
  2. Check for additional DTCs and provide the complete code list to a qualified service provider.
  3. The supplied evidence does not establish further troubleshooting steps.

11. When to contact service

Professional service is appropriate because the supplied evidence identifies a communication DTC but does not establish a customer-performed diagnosis or repair.

12. What the service center may check

  • Verify U01B0 and any accompanying DTCs with a scan tool.
  • Use applicable Chevrolet diagnostic information. Specific 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

  • Chevrolet manufacturer communication 15-NA-087, published through NHTSA as MC-10225708-0001 on October 25, 2022. Its supplied excerpt states that U01B0 may be observed on a scan tool and lists U0284 and U0285 among other possible DTCs.
  • The supplied excerpt does not establish the bulletin’s repair, coverage, or exact applicability to a particular vehicle.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication PDF 10225708, Chevrolet bulletin 15-NA-087: https://static.nhtsa.gov/odi/tsbs/2022/MC-10225708-0001.pdf

19. Frequently asked questions

What does U01B0 mean?

The verified diagnostic meaning is “Lost Communication with Battery Monitor Module.”

Which vehicles are verified as applicable?

Chevrolet Bolt EV and Bolt EUV, model years 2021 through 2023, United States market.

Can I drive or charge with U01B0?

Not yet established by verified evidence.

Does an official bulletin mention U01B0?

Yes. The supplied NHTSA-hosted Chevrolet communication 15-NA-087 lists U01B0 as a DTC that a technician may observe on a scan tool.

20. Sources & verification

ReferenceVerified
Chevrolet U01B0: Lost Communication with Battery Monitor Module •… | EV Diagnostics