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Car Fault Codes

OBD-II trouble codes explained: meaning, causes, symptoms, fixes and typical repair cost.

Category All Fuel & air Ignition & misfire Emissions & exhaust Cooling & lubrication Speed & idle Engine computer & electrical Transmission Hybrid & EV Network Body Chassis & brakes
Brand All ToyotaNissanChevroletHondaFordGMCLexusMitsubishiHyundaiKia
Jump to All U0 Manufacturer codes

Showing 1–24 of 65 codes

U0001 High Speed CAN Communication Bus High Network U0002 High Speed CAN Communication Bus Performance Medium Network U0003 High Speed CAN Communication Bus (+) Open High Network U0004 High Speed CAN Communication Bus (+) Low High Network U0005 High Speed CAN Communication Bus (+) High High Network U0006 High Speed CAN Communication Bus (-) Open High Network U0007 High Speed CAN Communication Bus (-) Low High Network U0008 High Speed CAN Communication Bus (-) High High Network U0009 High Speed CAN Communication Bus (-) Shorted to Bus (+) High Network U0010 Medium Speed CAN Communication Bus Medium Network U0019 Low Speed CAN Communication Bus Medium Network U0020 Low Speed CAN Communication Bus Performance Low Network U0073 Control Module Communication Bus "A" Off High Network U0074 Control Module Communication Bus "B" Off Medium Network U0100 Lost Communication With ECM/PCM "A" High Network U0101 Lost Communication With Transmission Control Module (TCM) High Network U0102 Lost Communication With Transfer Case Control Module Medium Network U0103 Lost Communication With Gear Shift Control Module "A" High Network U0104 Lost Communication With Cruise Control Module Low Network U0105 Lost Communication With Fuel Injector Control Module High Network U0106 Lost Communication With Glow Plug Control Module Medium Network U0107 Lost Communication With Throttle Actuator Control Module High Network U0108 Lost Communication With Alternative Fuel Control Module Medium Network U0109 Lost Communication With Fuel Pump Control Module High Network