Case study

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.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 98
Last commit: 2025-12-15
Language: C++

GitHub data as of 2026-11-09

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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.

Cite

BibTeX

@misc{mqb-sniffer-case,
  title = {{MQB-sniffer: decoding Golf MK7 CAN diagnostic exchanges}},
  howpublished = {\url{https://github.com/mrfixpl/MQB-sniffer}},
  url = {https://github.com/mrfixpl/MQB-sniffer},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/mqb-sniffer-case/}}
}

Plain text

MQB-sniffer: decoding Golf MK7 CAN diagnostic exchanges. https://github.com/mrfixpl/MQB-sniffer (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/mqb-sniffer-case/

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Primary sources

README.md GitHub · mrfixpl/MQB-sniffer · Revision b3df8f0