Comment by itsrobreally
15 hours ago
Certain PID values are bit-packed in non-obvious ways (like the tens digit is in one byte, ones in another, decimal in another) and units of measure are 'known' but might not be obvious. Publishing that information (which already exists! How do you think they write software?) would be a nice step in the right direction
That's just BCD, which these days is transparent with AI.
J1939 is really all most consumers need to care about when it comes to their personal car CAN data.
https://github.com/Konik-ai/j1939_dbc/blob/main/dbc/j1939.db...
There are a ton of dbc files floating around like this. Almost any car with a turbo has a kit to flash the ecu for more boost, so even the proprietary signals have been reversed.