Openpilot cellular connection failures investigated with Claude
Contributors used Claude to fix modem registration and SIM-identity handling that prevented cellular connections on their own openpilot devices.
Credits
- Source byline shunnag Source ↗
- Repository account user-attachments Source ↗
- Source byline xiaoxx970 Source ↗
Earliest dated source:
The full story
One contributor traced a modem that ignored a changed APN while registration was denied and reports testing a reconnection fix on their device. Another fixed decimal-only SIM-identifier validation that prevented a modem from reaching its connection state.
Both sources attribute work to Claude and describe tests on specific devices or SIMs. Their reports do not establish compatibility with every modem, eSIM or network.
How it was done
Tools
Themes
Loading themes…
Sources
From the maker's own write-up or code. We summarise what they report; we haven't tested it ourselves.
- comma.ai openpilot: modem.py: apply GsmApn changes when registration is deniedSource byline: shunnagPublished
The contributor’s pull request, including its AI disclosure and test notes.
- The code: github.comRepository account: user-attachments
Linked in the post.
- comma.ai openpilot: modem.py: accept hex chars in ICCIDSource byline: xiaoxx970Published
A related contribution with implementation and verification details.