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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

   OBD-II diagnostic trouble codes [51] [52] are five characters long, with the first letter indicating a category, and the remaining four being a hexadecimal number. [53] The first character, representing category can only be one of the following four letters, given here with their associated meanings.

4. Scan tool - Wikipedia

   en.wikipedia.org/wiki/Scan_tool

   DTC codes are read by a diagnostic tool, such as an OBD 2 scanner, which is plugged into the vehicle's diagnostic port. The tool communicates with the vehicle's onboard computer and retrieves the DTC codes. The codes are then interpreted by the mechanic or technician to determine the specific problem with the vehicle. [4]

5. Check engine light - Wikipedia

   en.wikipedia.org/wiki/Check_engine_light

   The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as General Motors' CCC (computer command control) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes

6. Automotive acronyms and abbreviations - Wikipedia

   en.wikipedia.org/wiki/Automotive_acronyms_and...

   The following items are commonly used automotive acronyms and abbreviations: [1] [2] [3] [4] 5MT: 5-speed manual transmission; A4: 4-speed automatic transmission; A5 ...

7. Error code - Wikipedia

   en.wikipedia.org/wiki/Error_code

   Car owners can make use of an on-board diagnostics scanner or an owner's manual to identify the meaning of a trouble code. Five-digit diagnostic trouble codes typically consist of one letter and four numbers (e.g. P0123).

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9. Unified Diagnostic Services - Wikipedia

   en.wikipedia.org/wiki/Unified_Diagnostic_Services

   Unified Diagnostic Services (UDS) is a diagnostic communication protocol used in electronic control units (ECUs) within automotive electronics, which is specified in the ISO 14229-1. [1] It is derived from ISO 14230-3 and the now obsolete ISO 15765-3 (Diagnostic Communication over Controller Area Network (DoCAN) [2]). 'Unified' in this context ...