# MQB-sniffer: decoding Golf MK7 CAN diagnostic exchanges

> MQB-sniffer documents CAN diagnostic traffic on a 2016 Volkswagen Golf MK7 by capturing exchanges between an OBDeleven adapter and the car. It identifies request and response IDs and records examples for engine RPM, ambient light, selected gear and gearbox mode.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/mrfixpl/MQB-sniffer>
- Primary source: <https://github.com/mrfixpl/MQB-sniffer/blob/b3df8f0fc9b82b44e2de0d3b8b3a8696f66556a4/README.md>
- Catalog page: <https://awesomerea.org/resources/mqb-sniffer-case/>
- Record JSON: <https://awesomerea.org/resources/mqb-sniffer-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/mqb-sniffer-case/index.md)

## Requirements & limits

- **Prerequisites:** The documented capture setup uses a Golf MK7, OBDeleven, an ELM327 adapter and an OBD2 splitter.
- **Limits:** The author reports buffer overflows on cheap ELM327 adapters and communication problems with MCP2515 sniffing.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/mrfixpl/MQB-sniffer/blob/b3df8f0fc9b82b44e2de0d3b8b3a8696f66556a4/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.