Understanding OBD2 Code Structure Code Format: Each OBD2 code has 5 characters (e.g., P0102) 1st Character: System Type (P=Powertrain, B=Body, C=Chassis, U=Network) 2nd Character: Code Type (0=Generic/Standard, 1=Manufacturer Specific) 3rd Character: Sub-system identifier 4th & 5th Characters: Specific fault number P-Codes (Powertrain) – Engine and Transmission P0000-P0099: Air/Fuel Mixture Control & Metering Code                     Description P0000 … Continue reading Ultimate OBD2 Error Codes Database with All Diagnostic Trouble Codes