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Audi B200047

control unit faulty

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an Audi service facility for diagnosis when B200047 is stored, because the applicable Audi procedure depends on the specific module and symptom code.
Confidence95%

Quick answer

Audi DTC B200047 means “control unit faulty.” Verified Audi bulletins show that, in specific applications, it can be caused by diagnostic/software behavior rather than a failed module. The exact affected system depends on the stored symptom code and control-module address.

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 B200047 mean?

Audi DTC B200047 means “control unit faulty.” Verified Audi bulletins show that, in specific applications, it can be caused by diagnostic/software behavior rather than a failed module. The exact affected system depends on the stored symptom code and control-module address.

2. Technical explanation

For US-market 2019–2020 Audi A8 and e-tron applicability records, B200047 is verified as “control unit faulty.” Audi communications document two distinct contexts: (1) a corner-radar control unit—J769, J770, J1088, or J1089—where symptom code 1311064 or 1311074 may be falsely identified by the diagnostic routine as a defective module; and (2) the laser-scanner control module J1122, address 00CD, where B200047 with symptom code 11567121 is associated with an adaptive-driving-assistance activation issue requiring a software update. A code alone does not establish which context applies.

3. What system is affected?

Not yet established by verified evidence for every occurrence. Verified bulletin contexts are corner-radar modules J769/J770/J1088/J1089 and laser-scanner module J1122 (address 00CD).

4. How serious is this code?

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

5. Symptoms you may notice

  • For corner-radar context, Audi documents messages including: “Change and exit warning: Malfunction! Please go to workshop.”
  • For corner-radar context, Audi documents: “Rear intersection assistant: Malfunction! Please go to workshop.”
  • For corner-radar context, Audi documents: “Audi pre sense: Malfunction! Please go to workshop.”
  • For the laser-scanner context, Audi identifies an adaptive driving assistance activation issue.

6. Possible causes

  • For corner-radar modules with B200047 and symptom code 1311064 or 1311074, Audi states that the diagnostic routine can falsely detect a defective control module.
  • For laser-scanner module J1122 with B200047 and symptom code 11567121, Audi states that software needs updating to correct the adaptive driving assistance activation issue.
  • Other causes are 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?

Not yet established by verified evidence.

9. What you can safely do

  • Record all stored diagnostic trouble codes, symptom codes, and control-module addresses for qualified service diagnosis.
  • Arrange diagnosis by an Audi-qualified service facility, particularly if the documented driver-assistance malfunction messages are displayed.
  • Do not assume that the control unit requires replacement solely because B200047 is stored.

10. Step-by-step troubleshooting

  1. Determine which control module stored B200047 and record its address word.
  2. Check whether the stored symptom code is 1311064, 1311074, or 11567121.
  3. For a corner-radar module J769, J770, J1088, or J1089 with symptom code 1311064 or 1311074, consult Audi bulletin A9620552060530_1; Audi identifies a false defective-module detection by the diagnostic routine.
  4. For laser-scanner module J1122 at address 00CD with symptom code 11567121, consult Audi bulletins A9120292053776_4, A9119092053776_3, and A9119042053776_2 regarding the adaptive-driving-assistance software update.

11. When to contact service

Contact an Audi service facility for diagnosis when B200047 is stored, because the applicable Audi procedure depends on the specific module and symptom code.

12. What the service center may check

  • Identify whether B200047 is stored in a corner-radar control unit or in laser-scanner control module J1122.
  • Verify the symptom code associated with B200047.
  • For J1122, evaluate applicability of the Audi software update described for symptom code 11567121.
  • For corner-radar modules, evaluate the documented false diagnostic detection condition for symptom code 1311064 or 1311074.

13. Possible repair or resolution

  • For laser-scanner control module J1122 with B200047 and symptom code 11567121, Audi documents a software update to correct the adaptive driving assistance activation issue.
  • For corner-radar modules with B200047 and symptom code 1311064 or 1311074, Audi documents that the diagnostic routine can falsely identify the module as defective.
  • Any additional repair or module replacement is not yet established by verified evidence for B200047 alone.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Audi/NHTSA manufacturer communication A9620552060530_1, published August 31, 2020: B200047 in corner-radar modules J769/J770/J1088/J1089 with symptom code 1311064 or 1311074; false defective-module detection is documented.
  • Audi/NHTSA manufacturer communication A9120292053776_4, published January 15, 2020: B200047 in laser-scanner module J1122, address 00CD, with symptom code 11567121; software update is documented.
  • Audi/NHTSA manufacturer communications A9119092053776_3 and A9119042053776_2: B200047 in laser-scanner module J1122, address 00CD, with symptom code 11567121 is listed in the documented diagnostic context.

16. Recall information

  • Not yet established by verified evidence. The supplied records are manufacturer communications/technical service bulletins, not recall notices.

17. Official manufacturer information

Official NHTSA-hosted Audi communications: https://static.nhtsa.gov/odi/tsbs/2020/MC-10179125-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2020/MC-10170633-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2019/MC-10168721-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2019/MC-10167140-0001.pdf

19. Frequently asked questions

What does Audi B200047 mean?

It means “control unit faulty.”

Does B200047 prove the control unit has failed?

No. In the verified corner-radar bulletin context with symptom code 1311064 or 1311074, Audi states that the diagnostic routine can falsely detect a defective control module.

Which vehicles are covered by the supplied applicability evidence?

US-market 2019–2020 Audi A8 and 2019–2020 Audi e-tron records are supplied. Exact bulletin applicability must be confirmed by a service facility.

Is it safe to drive or charge?

Not yet established by verified evidence.

20. Sources & verification

Verified
Audi B200047: control unit faulty | EV Diagnostics