Tag
#PIDs
3 posts in Car Diagnostics blog about "PIDs" — OBD-II diagnostics, DTC codes, repair. ← All posts
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OBD-II Mode 01: current data and the PIDs that matter
Mode 01 is the live feed every OBD-II car supports. Knowing which of its hundred-odd parameters are worth watching turns a list of numbers into a diagnostic method.
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Reading live data as graphs: spotting the fault in the shape
A number tells you a value; a graph tells you a behaviour. Most sensor faults are visible in the shape of the trace long before the value goes out of range.
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Why your scanner shows fewer parameters than the next car: how supported PIDs work
Somebody else sees boost pressure and oil temperature; you see RPM and speed. That is not an app limitation — the car itself declares which parameters it will hand over, and the list differs from vehicle to vehicle.