Volkswagen U044700
diagnosis interface for data bus module 1, implausible signal, passive/sporadic Symptom 23076 U041600: ESC implausible signal Symptom 38468 U122900: for driver assist syste
Quick answer
For certain 2021–2022 Volkswagen ID.4 vehicles in the US, U044700 is documented as “diagnosis interface for data bus module 1, implausible signal,” with passive/sporadic status and symptom code 23076. Volkswagen’s manufacturer communication says the combination of DTCs and symptom codes is important; wording differences in scan-tool descriptions are not meaningful.
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 U044700 mean?
For certain 2021–2022 Volkswagen ID.4 vehicles in the US, U044700 is documented as “diagnosis interface for data bus module 1, implausible signal,” with passive/sporadic status and symptom code 23076. Volkswagen’s manufacturer communication says the combination of DTCs and symptom codes is important; wording differences in scan-tool descriptions are not meaningful.
2. Technical explanation
Verified evidence identifies U044700 as an implausible-signal fault involving diagnosis interface for data bus module 1. In the cited Volkswagen manufacturer communications, it is listed in the engine control unit at diagnosis address 0001 as passive/sporadic and paired with symptom code 23076. The available evidence does not establish a component-level failure cause, a specific repair, or the operational effect of this code by itself.
3. What system is affected?
Diagnosis interface for data bus module 1; the cited communications list the entry in the engine control unit (diagnosis address 0001).
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- The documented diagnostic entry is U044700 with symptom code 23076.
- Vehicle-driver symptoms are not yet established by verified evidence.
6. Possible causes
- An implausible signal is documented for diagnosis interface for data bus module 1.
- A root cause is 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 a qualified Volkswagen service provider if the fault is present or recurring.
- Record all stored DTCs and their symptom codes for service review.
- Do not rely on wording variations between ODIS, GFF logs, or other scan-tool descriptions; the cited Volkswagen communication states that the DTC-and-symptom-code combination is important.
10. Step-by-step troubleshooting
- Use a diagnostic scan to confirm whether U044700 is stored in engine control unit address 0001 and whether symptom code 23076 is associated with it.
- Review the complete stored DTC and symptom-code combination. The cited communications list U044700 alongside other entries; they state that the combination is important.
- Further troubleshooting steps are not yet established by verified evidence.
11. When to contact service
Contact a Volkswagen service provider for diagnosis, particularly if U044700 recurs or is accompanied by other stored DTCs. The available evidence does not establish whether immediate service is required.
12. What the service center may check
- Confirm U044700 and symptom code 23076 in engine control unit address 0001.
- Review the complete DTC/symptom-code combination rather than interpreting U044700 in isolation.
- Volkswagen’s manufacturer communication notes that variations in DTC text wording compared with ODIS or a GFF log are not meaningful.
13. Possible repair or resolution
- A verified repair resolution is not provided in the supplied evidence.
14. Affected vehicles
- Volkswagen ID.4 · 2021 · US
- Volkswagen ID.4 · 2021–2022 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 10224843, Volkswagen document V0121102064412_2, published October 17, 2022: lists U044700, symptom 23076, as passive/sporadic in engine control unit address 0001. https://static.nhtsa.gov/odi/tsbs/2022/MC-10224843-0001.pdf
- NHTSA Manufacturer Communication 10202345, Volkswagen document V0121102064412_1, published October 18, 2021: lists U044700, symptom 23076, as passive/sporadic in engine control unit address 0001. https://static.nhtsa.gov/odi/tsbs/2021/MC-10202345-0001.pdf
16. Recall information
- No recall information is established by the supplied verified evidence.
17. Official manufacturer information
Official NHTSA-hosted Volkswagen manufacturer communications are available at https://static.nhtsa.gov/odi/tsbs/2022/MC-10224843-0001.pdf and https://static.nhtsa.gov/odi/tsbs/2021/MC-10202345-0001.pdf.
19. Frequently asked questions
What does Volkswagen DTC U044700 mean?
For the applicable Volkswagen ID.4 records, it is listed as “diagnosis interface for data bus module 1, implausible signal,” passive/sporadic, with symptom code 23076.
Does different scan-tool wording change the diagnosis?
The cited Volkswagen manufacturer communications state that wording variations between the listed DTC descriptions and ODIS or GFF-log wording are not meaningful; the DTC and symptom-code combination is important.
Is U044700 safe to drive or charge with?
Not yet established by verified evidence.
Which vehicles are covered by the supplied applicability evidence?
Volkswagen ID.4 vehicles for model years 2021–2022 in the US are listed in the supplied applicability data.