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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 567 · 16981–17010 shown
P0303
Cylinder 3 - misfire detected

14 reference families · BMW, Continental Synerject Easy U, Ford, Acura / Honda, Genesis / Hyundai / Kia, Datsun / Lada, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, Dacia / Renault, GAC / Lexus / Toyota, УАЗ, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0304
Cylinder 4 - misfire detected

14 reference families · BMW, Continental Synerject Easy U, Ford, Acura / Honda, Genesis / Hyundai / Kia, Datsun / Lada, Dodge / Mitsubishi, Infiniti / Nissan, Generic OBD2, Belgee / Geely / Proton, Dacia / Renault, GAC / Lexus / Toyota, УАЗ, Audi / Jetta / MAN / Seat / Skoda / Volkswagen

P0305
Cylinder 5 - misfire detected

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

P0306
Cylinder 6 - misfire detected

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

P0307
Cylinder 7 - misfire detected

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

P0308
Cylinder 8 - misfire detected

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

P0309
Cylinder 9 - misfire detected

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

P0311
Cylinder 11 - misfire detected

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

P0312
Cylinder 12 - misfire detected

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

P0325
Knock sensor (KS) 1, bank 1 - circuit malfunction

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

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