Loading OBD-II directory...

Browse OBD-II Trouble Codes by Subsystem Series

Direct technical index organized by SAE J1979 diagnostic subsystem ranges. Select any trouble code below to open its multimeter test specifications, wiring checks, and replacement parts guide:

P0001–P0099: Camshaft Timing (VVT), Fuel Volume & HO2S Heaters

P0100–P0199: Mass Air Flow (MAF), Coolant Temp (ECT), O2 Sensors & Fuel Trim

P0200–P0299: Fuel Injectors, Turbocharger Boost & Throttle Pedal Circuits

P0300–P0399: Cylinder Misfires, Ignition Coils, Knock & Crank/Cam Sensors

P0400–P0499: Catalytic Converters, EVAP Leaks, Purge/Vent Valves & EGR

P0500–P0599: Idle Air Control, Vehicle Speed, Thermostat & Alternator/Battery

P0600–P0699: ECM/PCM Internal Processor, 5V Reference Bus & Glow Plugs

P0700–P0899: Transmission Shift Solenoids, Torque Converter & Speed Sensors

P2000–P2999: Intake Manifold Runner, Reductant/DEF, NOx & Post-Cat Fuel Trim

C0001–C1999: ABS Wheel Speed Sensors, Traction Control & Steering Angle

B0001–B1999: SRS Airbag Squibs, Seatbelt Pretensioners & HVAC Actuators

U0001–U0999: CAN Bus Network Lost Communication with ECM, TCM, ABS & BCM