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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 405 · 12121–12150 shown
B2101
Head Rest Switch Circuit Failure

7 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton, Subaru, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

B2102
Antenna Circuit Short to Ground

7 reference families · Ford, GM, Dodge / Mitsubishi, Infiniti / Nissan, Belgee / Geely / Proton, Subaru, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

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