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Diagnostic knowledge search

23,879 code identifiers with scoped meanings, and 54,261 enhanced signal definitions. No VIN or personal information is needed.

Diagnostic explainers

Pending, stored and permanent codes · Enhanced PIDs and Mode 22

78,140 matches

Page 471 · 14101–14130 shown
C0040
Brake Pedal Switch "A"

4 reference families · GM, Generic OBD2, Belgee / Geely / Proton, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

OBD Lens reference library · catalog legacy-owner-2026-11-02-v84-evidence. Sources and scope