VAS 6154B vs. VAS 6154A – What's the Difference?
Anyone involved in professional vehicle diagnostics for VW, Audi, Skoda, or Seat will inevitably encounter two models: the VAS 6154A and the newer VAS 6154B. Both are from I+ME ACTIA and are official diagnostic interfaces of the Volkswagen Group – but there are crucial differences relevant for everyday workshop use.
What is the VAS 6154A?
The VAS 6154A is the predecessor and was the standard interface in the VW Group for many years. It supports common diagnostic protocols like CAN, UDS, and DoIP – albeit with limited DoIP support compared to its successor. It runs stably with ODIS Service up to version 23.x and is still in use in many workshops.
Technical Specifications VAS 6154A
- Protocols: CAN, K-Line, UDS
- Connection: WLAN, USB
- DoIP: limited
- Compatible with: ODIS up to V23.x
What is the VAS 6154B?
The VAS 6154B is the current generation and mandatory for all vehicles from approximately 2021 that fully rely on DoIP (Diagnostics over Internet Protocol) – including current MEB platform vehicles such as ID.3, ID.4, and newer Audi models. It is the only interface fully compatible with ODIS V25 and ODIS Engineering V20.
Technical Specifications VAS 6154B
- Protocols: CAN, UDS, DoIP (full)
- Connection: WLAN, USB
- DoIP: fully supported
- Compatible with: ODIS V25.2.2, ODIS Engineering V20
- Part Number: ASE 405 431 00 000
Direct Comparison
| Feature | VAS 6154A | VAS 6154B |
|---|---|---|
| DoIP Support | Limited | Full |
| ODIS V25 compatible | No | Yes |
| MEB vehicles (ID.3/4) | Limited | Yes |
| Current new cars | No | Yes |
| Recommendation | Older vehicles | All vehicles from 2021 |
Which interface do you need?
- Only older vehicles up to approx. 2020 → VAS 6154A is sufficient
- Current VW Group vehicles, MEB platform, ODIS V25 → VAS 6154B is mandatory
- Future-proof for all models → VAS 6154B
Conclusion
The VAS 6154B is the clear successor and indispensable for any professional workshop that also diagnoses current vehicles. Anyone still working with the 6154A will reach its limits with vehicles from 2022 at the latest.