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Audi B126CF1

Navigation database not available

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Audi service provider. The cited Audi bulletin states that its procedure is applicable only in combination with recall 91DZ.
Confidence95%

Quick answer

Audi DTC B126CF1 means “Navigation database not available.” Verified Audi/NHTSA communications associate it with a navigation system that remains initializing or has a corrupt or incomplete map after an over-the-air update. The cited bulletin applies only in combination with recall 91DZ.

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

Video guides

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Audi Перестала работать штатная навигация - ошибка: B126CF1 и B126CF0audimib

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1. What does B126CF1 mean?

Audi DTC B126CF1 means “Navigation database not available.” Verified Audi/NHTSA communications associate it with a navigation system that remains initializing or has a corrupt or incomplete map after an over-the-air update. The cited bulletin applies only in combination with recall 91DZ.

2. Technical explanation

Audi identifies B126CF1 as a fault stored in the information electronics control module J794 (address word 005F). The verified technical background states that an internal reset during an over-the-air update can corrupt the navigation database.

3. What system is affected?

Navigation system / navigation database in information electronics control module J794 (address 005F).

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • Navigation system is permanently initializing.
  • Navigation map is corrupt or incomplete.

6. Possible causes

  • An internal reset during an over-the-air update can cause the navigation database to become corrupted.

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

  • Arrange diagnosis with an authorized Audi service provider.
  • Provide the stored code B126CF1 and describe whether the navigation system is continuously initializing or the map is corrupt or incomplete.

10. Step-by-step troubleshooting

  1. Confirm whether B126CF1 is stored in information electronics control module J794 (address 005F).
  2. Audi’s cited service information directs technicians to contact TAC for the current MIB3 navigation-database download link and instructions.
  3. Do not attempt unverified software or navigation-database repairs.

11. When to contact service

Contact an authorized Audi service provider. The cited Audi bulletin states that its procedure is applicable only in combination with recall 91DZ.

12. What the service center may check

  • Verify the navigation-system condition and stored DTCs in J794.
  • Determine whether recall 91DZ applies to the vehicle.
  • Follow Audi TAC instructions for the current MIB3 navigation database when the bulletin and campaign apply.

13. Possible repair or resolution

  • Audi’s verified service information describes obtaining the current MIB3 navigation database and instructions through TAC. The exact completed repair outcome is not otherwise established by the supplied evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Audi Technical Service Bulletin A9123612062115_9, published January 17, 2023; NHTSA communication MC-10230844-0001: https://static.nhtsa.gov/odi/tsbs/2023/MC-10230844-0001.pdf
  • Audi Technical Service Bulletin A9122392062115_8, published October 19, 2022; NHTSA communication MC-10225550-0001: https://static.nhtsa.gov/odi/tsbs/2022/MC-10225550-0001.pdf
  • Audi Technical Service Bulletin A9121502062115_7, published November 17, 2021; NHTSA communication MC-10203598-0001: https://static.nhtsa.gov/odi/tsbs/2021/MC-10203598-0001.pdf
  • Audi Technical Service Bulletin A9121302062115_6, published September 15, 2021; NHTSA communication MC-10201514-0001: https://static.nhtsa.gov/odi/tsbs/2021/MC-10201514-0001.pdf
  • Audi Technical Service Bulletin A9121102062115_5, published June 23, 2021; NHTSA communication MC-10198254-0001: https://static.nhtsa.gov/odi/tsbs/2021/MC-10198254-0001.pdf

16. Recall information

  • Recall 91DZ is referenced by the verified Audi bulletins. Recall scope, remedy, and VIN applicability are not yet established by the supplied evidence.

17. Official manufacturer information

Verified applicability: US-market Audi A7 (2021–2022), A8 (2021–2022), Q5 (2021–2022), e-tron (2021–2022), e-tron GT (2021–2022), and RS e-tron GT (2021–2022). Some supplied records also list the 2021 model year separately. Confirm vehicle-specific applicability by VIN with Audi.

19. Frequently asked questions

What does Audi code B126CF1 mean?

It means “Navigation database not available.”

What can cause B126CF1?

Verified Audi technical background states that an internal reset during an over-the-air update can corrupt the navigation database.

Is B126CF1 associated with another code?

The cited Audi bulletins state that B126CF0, “Navigation system Navigation database malfunctioning,” may be stored along with or instead of B126CF1.

Can I drive or charge with B126CF1?

Not yet established by verified evidence.

20. Sources & verification

Verified
Audi B126CF1: Navigation database not available | EV Diagnostics