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Audi B17D900

Safety controller Technical Background Software issue Production Solution Not applicable Service If the above concern has been confirmed with the DTC perform the SVM update below m

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an Audi dealer or qualified Audi service facility for diagnosis and the documented SVM update if the intermittent no-start concern and DTC B17D900 are confirmed.
Confidence95%

Quick answer

For a 2022 US Audi e-tron GT, DTC B17D900 is documented in an Audi manufacturer communication as a Hybrid Battery Management (BECM/J840) safety-controller software issue associated with intermittent no-start complaints. The documented service action is an SVM software update after the concern and DTC are confirmed.

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 B17D900 mean?

For a 2022 US Audi e-tron GT, DTC B17D900 is documented in an Audi manufacturer communication as a Hybrid Battery Management (BECM/J840) safety-controller software issue associated with intermittent no-start complaints. The documented service action is an SVM software update after the concern and DTC are confirmed.

2. Technical explanation

Audi’s documented workshop finding is DTC B17D900 stored in the Hybrid Battery Management (BECM), J840, address word 008C. The manufacturer communication identifies the technical background as a software issue in the safety controller. Its stated service direction is to perform the specified SVM update when the concern has been confirmed with this DTC. The communication also states that the high-voltage system must be de-energized before the update, following scan-tool directions; this is a dealer/qualified-service procedure.

3. What system is affected?

Hybrid Battery Management (BECM), J840, address word 008C; safety controller software.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The vehicle may not start sporadically.
  • After waiting for a while, the vehicle may start again.

6. Possible causes

  • Safety-controller software issue, as identified in the Audi manufacturer communication.

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

  • If the vehicle has intermittent no-start behavior, arrange diagnosis by an Audi-qualified service facility.
  • Provide the stored DTC B17D900 and the intermittent no-start history to the service facility.
  • Do not attempt high-voltage-system de-energization or software programming yourself.

10. Step-by-step troubleshooting

  1. Confirm whether DTC B17D900 is stored in Hybrid Battery Management (BECM), J840, address word 008C.
  2. Confirm the reported intermittent no-start concern.
  3. If confirmed, have qualified service personnel follow the applicable SVM update procedure and its required scan-tool directions.

11. When to contact service

Contact an Audi dealer or qualified Audi service facility for diagnosis and the documented SVM update if the intermittent no-start concern and DTC B17D900 are confirmed.

12. What the service center may check

  • Check Hybrid Battery Management (BECM), J840, address word 008C for DTC B17D900.
  • Verify the intermittent no-start complaint.
  • Follow the manufacturer’s SVM update procedure after confirmation.
  • The manufacturer communication states that the high-voltage system must be de-energized before the update, according to scan-tool directions.

13. Possible repair or resolution

  • Perform the specified SVM software update when the concern has been confirmed with DTC B17D900.
  • No production solution is listed in the verified manufacturer communication.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 10205970: A9321592065425_1, published December 22, 2021. Applies to 2022 Audi e-tron GT vehicles, VIN range: All. It documents B17D900, intermittent no-start behavior, and an SVM update service direction.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official source: NHTSA Manufacturer Communication PDF 10205970 (Audi document A9321592065425_1), published December 22, 2021: https://static.nhtsa.gov/odi/tsbs/2021/MC-10205970-0001.pdf

19. Frequently asked questions

What does Audi DTC B17D900 mean on a 2022 e-tron GT?

The verified Audi communication identifies B17D900 in the Hybrid Battery Management (BECM), J840, as a safety-controller software issue.

What symptom is associated with B17D900?

The documented customer complaint is that the vehicle does not start sporadically and may start again after waiting for a while.

What is the documented repair?

If the concern and DTC are confirmed, Audi directs service personnel to perform the specified SVM software update.

Is it safe to drive or charge with B17D900?

Not yet established by verified evidence.

20. Sources & verification

Verified
Audi B17D900: Safety controller Technical Background Software issue… | EV Diagnostics