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2. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/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.. SAE standard J1979 defines many OBD-II PIDs. 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.

3. On-board diagnostics - Wikipedia

   en.wikipedia.org/wiki/On-board_diagnostics

   The Diagnostic Trouble Codes (DTC's) of OBD-I vehicles can usually be found without an expensive scan tool. Each manufacturer used their own Diagnostic Link Connector (DLC), DLC location, DTC definitions, and procedure to read the DTC's from the vehicle.

4. Unified Diagnostic Services - Wikipedia

   en.wikipedia.org/wiki/Unified_Diagnostic_Services

   Again, there are reserved values that can be defined for vehicle manufacturers and vehicle suppliers specific use. 0x14 0x54 Clear Diagnostic Information Clears diagnostic trouble codes (DTC's) from ECU memory. DTC grouping is used to loosely identify fault locations in undocumented ECU's. 0x14 00 00 00 to FF FF FF clears specific powertrain DTC's

5. Check engine light - Wikipedia

   en.wikipedia.org/wiki/Check_engine_light

   Some vehicles manufactured from the late 1990s to mid 2000s have a MIL that illuminates based on the odometer reading, regardless of engine operation. For example, in several Mazda models, the light will come on at 80,000 miles (130,000 km) and remain lit without generating a computer trouble code.

6. Scan tool - Wikipedia

   en.wikipedia.org/wiki/Scan_tool

   OBD 1 vs OBD 2 the vehicle will also dictate what the scan tool is able to display. If the vehicle is equipped with OBD 1 it will have significantly less available data when compared to a vehicle equipped with OBD 2. [2] When a vehicle detects a problem, it generates a DTC code which is a unique code that corresponds to the specific problem ...

7. List of Toyota model codes - Wikipedia

   en.wikipedia.org/wiki/List_of_Toyota_model_codes

   Model code of a Toyota Yaris (XP150) written on the VIN plate. The following model codes have been used by Toyota.The letters of the model code is found by combining the letters of the engine code with the platform code.