2.8.4 Service 01 PID 51 - Fuel Type Coding.2.8.3 Service 01 PID 1C - OBD standards this vehicle conforms to.2.8.2 Service 01 PID 12 - Commanded secondary air status.2.8.1 Service 01 PID 03 - Fuel system status.2.7.7 Service 09 PID 0B - In-use performance tracking for compression ignition engines.2.7.6 Service 09 PID 08 - In-use performance tracking for spark ignition engines.2.7.5 Service 03 (no PID required) - Show stored Diagnostic Trouble Codes.2.7.4 Service 01 PID 78 and 79 - Exhaust Gas temperature (EGT) Bank 1 and Bank 2.2.7.3 Service 01 PID 41 - Monitor status this drive cycle.2.7.2 Service 01 PID 01 - Monitor status since DTCs cleared.
Heavy duty vehicles (greater than 14,000 lb ) made after 2010, for sale in the US are allowed to support OBD-II diagnostics through SAE standard J1939-13 (a round diagnostic connector) according to CARB in title. They are both required to be accessed through a standardized data link connector defined by SAE J1962. In 1996, light duty vehicles (less than 8,500 lb ) were the first to be mandated followed by medium duty vehicles (between 8,500–14,000 lb ) in 2005. Though not mandated, many motorcycles also support OBD-II PIDs. Manufacturers also define additional PIDs specific to their vehicles. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections. SAE standard J1979 defines many OBD-II PIDs. OBD-II PIDs ( On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.
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