OBD-II Fault Codes — All 11,174

Know your code? Jump straight to it. Otherwise browse by system or by vehicle make.

By Category By Make Diesel

Most-searched codes

P0300 Random / multiple cylinder misfire P0420 Catalyst efficiency below threshold (Bank 1) P0171 System too lean (Bank 1) P0455 EVAP system — large leak detected P0128 Coolant temp below regulating temperature P0442 EVAP system — small leak detected P0340 Camshaft position sensor circuit P0011 VVT — intake camshaft over-advanced (Bank 1) P0700 Transmission control system malfunction P0741 Torque converter clutch — stuck off P0325 Knock sensor 1 circuit P2372 EVAP control system — input/output cell signal

Looking for a specific make? Try P0021 Nissan · P0191 Ford · P0449 Chevrolet · P0496 Chevrolet · P0448 Nissan · P3020 Toyota

Browse by System

Pick the category your code falls under to see every code in that range.

Engine & Powertrain

2637 codes · P0xxx - P3xxx

Misfires, sensors, fuel system, ignition, VVT, throttle, and general engine codes.

Transmission

896 codes · P0700 - P0999

Shift solenoids, torque converter, gear ratios, TCM, clutch, and fluid pressure codes.

Emissions

284 codes · P0400 - P0439

EGR system, catalytic converter efficiency, secondary air injection codes.

EVAP System

29 codes · P0440 - P0459

Evaporative emission system leaks, purge valve, vent valve, and pressure sensor codes.

Network & Communication

2526 codes · P0600 - U0xxx

CAN bus errors, lost communication with modules, PCM/ECM internal faults, U-codes.

Body

2418 codes · B0xxx - B1xxx

Airbags, SRS, lighting, HVAC, power windows, door locks, instrument cluster, B-codes.

Chassis

2384 codes · C0xxx

ABS, traction control, stability control, steering, brakes, suspension, C-codes.

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