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Knowledge Hub · Fault Codes

The DTC fault-code library.

769+ OBD-II diagnostic trouble codes — meaning, causes, symptoms and the fix. Search a code or browse by family.

P0087 P0087 Code: Fuel Rail Pressure Too Low — Causes, Symptoms & Fix P0238 P0238 Code: Turbo Boost Sensor A Circuit High — Causes, Symptoms & Fix P0202 P0202 Code: Cylinder 2 Injector Circuit Open — Causes, Symptoms & Fix P0380 P0380 Code: Glow Plug Circuit A Malfunction — Causes, Symptoms & Fix P0100 P0100 Code: Mass Air Flow Circuit Malfunction — Causes, Symptoms & Fix P0089 P0089 Code: Fuel Pressure Regulator Performance — Causes, Symptoms & Fix P0201 P0201 Code: Cylinder 1 Injector Circuit Open — Causes, Symptoms & Fix P0093 P0093 Code: Fuel System Leak Detected (Large) — Causes, Symptoms & Fix P0638 P0638 Code: Throttle Actuator Range/Performance — Causes, Symptoms & Fix P1705 P1705 Code: Transmission Range / TR Sensor Fault — Fix P0366 P0366 Code: Cam Sensor B Range/Performance (Bank 1) — Causes, Symptoms & Fix P0088 P0088 Code: Fuel Rail/System Pressure Too High — Fix Diagn Diagnose P0000 Easily P0670 P0670 Code: Glow Plug Control Module Circuit — Fix Guide P0004 P0004 Code: Fuel Volume Regulator Circuit High — Fix P0235 P0235 Code: Turbo Boost Sensor A Circuit — Causes & Fix P2122 P2122 Code: Pedal Position Sensor D Low Input — Fix P0402 P0402 Code: EGR Flow Excessive Detected — Causes & Fix Maste Master P0236 Diagnostics P0236 P0236 Code: Turbo Boost Sensor A Range/Performance — Fix Modul Module communication fault P1693? Under Understanding OBD-II Code P0115 Under Understanding P0600 Code Under Understanding and Fixing Trouble Code P3008