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Diagnostic comparisons

Compare OBD codes and concepts

P0420 vs P0430

Upstream vs downstream O2 sensor

Bank 1 vs Bank 2

OBD1 vs OBD2: scope

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 584 · 17491–17520 shown
P0522
Engine oil pressure sensor/switch - low voltage

12 reference families · BMW, Continental Synerject Easy U, Ford, Acura / Honda, ISUZU, Mercedes-Benz, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, GAC / Lexus / Toyota, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0523
Engine oil pressure sensor/switch - high voltage

12 reference families · BMW, Continental Synerject Easy U, Ford, Acura / Honda, ISUZU, Mercedes-Benz, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, GAC / Lexus / Toyota, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0530
AC refrigerant pressure sensor - circuit malfunction

12 reference families · BMW, Dodge / Fiat, Ford, GM, Mercedes-Benz, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, Dacia / Renault, GAC / Lexus / Toyota, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0532
AC refrigerant pressure sensor - low input

13 reference families · BMW, Continental Synerject Easy U, Ford, Genesis / Hyundai / Kia, ISUZU, Datsun / Lada, Mercedes-Benz, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, GAC / Lexus / Toyota, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0533
AC refrigerant pressure sensor - high input

13 reference families · BMW, Continental Synerject Easy U, Ford, Genesis / Hyundai / Kia, ISUZU, Datsun / Lada, Mercedes-Benz, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, GAC / Lexus / Toyota, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0534
AC refrigerant charge loss

9 reference families · BMW, Ford, Mercedes-Benz, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, GAC / Lexus / Toyota, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

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