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Audi U142100

Control module for emergency call module and communication unit no communication

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Audi service provider for diagnosis. The available evidence documents Audi-specific diagnostic-tool and software-related service contexts.
Confidence95%

Quick answer

Audi DTC U142100 means the gateway cannot communicate with the emergency call module and communication unit (ConBox). Verified Audi bulletins associate it with an SOS malfunction message on certain vehicles and identify specific startup or transport-mode situations in documented cases.

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 U142100 mean?

Audi DTC U142100 means the gateway cannot communicate with the emergency call module and communication unit (ConBox). Verified Audi bulletins associate it with an SOS malfunction message on certain vehicles and identify specific startup or transport-mode situations in documented cases.

2. Technical explanation

U142100 is stored in the data bus on-board diagnostic interface (Gateway), J533, and is defined as “Control module for emergency call module and communication unit no communication.” In a documented Audi technical bulletin, a sporadic startup issue can cause the emergency call module and communication unit (ConBox), J949, to be unavailable. Separate Audi documentation states that use of an older diagnostic head rather than VAS 6154 can leave the ConBox in transport mode/flight mode and result in U142100 at the gateway, along with P169A00.

3. What system is affected?

Emergency call module and communication unit (ConBox), J949, and the data bus on-board diagnostic interface (Gateway), J533.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • An SOS malfunction message may be displayed in the instrument cluster.
  • U142100 may be stored in Gateway J533 (address word 0019).

6. Possible causes

  • A sporadic startup issue can cause the emergency call module and communication unit (ConBox), J949, to be unavailable in a documented Audi bulletin.
  • On documented vehicles, use of an older diagnostic head instead of VAS 6154 can leave the ConBox in transport mode/flight mode and set U142100 in the gateway.
  • 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

  • Arrange diagnosis by an authorized Audi service provider, particularly if an SOS malfunction message is displayed.
  • Provide the stored code U142100 and any SOS malfunction message details to the service provider.
  • Do not attempt high-voltage or module repair procedures yourself.

10. Step-by-step troubleshooting

  1. A qualified Audi technician can confirm whether U142100 is stored in Gateway J533 at address word 0019.
  2. For the documented SOS-malfunction condition, Audi bulletin information identifies a ConBox startup issue as a technical background.
  3. For the documented transport-mode condition, Audi documentation specifies VAS 6154 because older diagnostic heads may not properly address the control unit using the new diagnostic protocol.
  4. Further vehicle-specific diagnostic steps are not yet established by the supplied verified evidence.

11. When to contact service

Contact an authorized Audi service provider for diagnosis. The available evidence documents Audi-specific diagnostic-tool and software-related service contexts.

12. What the service center may check

  • Read fault memory in Gateway J533 (address word 0019) for U142100.
  • Determine whether the vehicle matches the documented SOS-malfunction bulletin condition.
  • Determine whether a documented ConBox transport-mode/flight-mode situation is present.
  • Use the applicable Audi diagnostic equipment and procedures; the supplied evidence specifically identifies VAS 6154 in the transport-mode scenario.

13. Possible repair or resolution

  • For the documented SOS-malfunction condition, Audi bulletin evidence describes a planned/released software-service direction, but the supplied excerpts do not establish the exact vehicle-specific repair outcome.
  • For the documented transport-mode condition, Audi documentation directs service actions to remove transport mode using the specified diagnostic process.
  • A repair applicable to every vehicle with U142100 is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication 10226968, Audi bulletin A9122442062973_3, published November 4, 2022: documents an SOS malfunction message and U142100 in Gateway J533; its technical background describes a sporadic ConBox startup issue.
  • NHTSA Manufacturer Communication 10222110, Audi bulletin A9122332062973_2, published September 23, 2022: documents an SOS malfunction message and U142100 in Gateway J533.
  • NHTSA Manufacturer Communication 10191043, Audi bulletin A9121912062973_1, published April 20, 2021: documents SOS malfunction and U142100 for listed ConBox Low vehicles, including specified 2019–2020 Audi A7, A8, and e-tron quattro applications.
  • NHTSA Manufacturer Communication 10231575, Audi bulletin A9123692052299_6, published February 2, 2023: documents U142100 when an older diagnostic head is used and the ConBox remains in transport mode/flight mode.
  • NHTSA Manufacturer Communications 10214842 and 10208481 contain related Audi transport-mode diagnostic information.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Verified official information is available through NHTSA-hosted Audi manufacturer communications, including https://static.nhtsa.gov/odi/tsbs/2022/MC-10226968-0001.pdf and https://static.nhtsa.gov/odi/tsbs/2023/MC-10231575-0001.pdf. Document applicability and repair direction should be confirmed by VIN with Audi.

19. Frequently asked questions

What does Audi code U142100 mean?

It means “Control module for emergency call module and communication unit no communication.” The code is documented as stored in Gateway J533.

Can U142100 cause an SOS malfunction message?

Yes. Audi bulletins document vehicles with an SOS malfunction message in the instrument cluster and U142100 stored in Gateway J533.

Is U142100 always a failed emergency-call module?

No. The supplied evidence documents a sporadic ConBox startup issue and a transport-mode/diagnostic-tool scenario. It does not establish a failed module as the universal cause.

Is it safe to drive or charge with U142100?

Not yet established by verified evidence.

20. Sources & verification

Verified
Audi U142100: Control module for emergency call module and… | EV Diagnostics