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  2. On-board diagnostics - Wikipedia

    en.wikipedia.org/wiki/On-board_diagnostics

    The OBD-II specification provides for a standardized hardware interface — the female 16-pin (2x8) J1962 connector, where type A is used for 12-volt vehicles and type B for 24-volt vehicles. Unlike the OBD-I connector, which was sometimes found under the bonnet of the vehicle, the OBD-II connector is required to be within 2 feet (0.61 m) of ...

  3. 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 .

  4. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    Exempt for first seven model years of gasoline vehicles. When outside exemption, vehicles up to 32 years old – biennially, else annually. OBD testing done when newer than 10 years Exempt for first four model years of diesel vehicles. When outside exemption, diesel trucks less than 10 years – Biennially else annually.

  5. Best OBD-II Scanners for 2024, Tested - AOL

    www.aol.com/best-obd-ii-scanners-2023-223000386.html

    An On-board Diagnostics version two (OBD-II) port is a standardized diagnostic interface included in all vehicles made in or after 1996. OBD-II ports communicate with the vehicle's onboard ...

  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. CAN bus - Wikipedia

    en.wikipedia.org/wiki/CAN_bus

    The CAN bus is one of five protocols used in the on-board diagnostics (OBD)-II vehicle diagnostics standard. The OBD-II standard has been mandatory for all cars and light trucks sold in the United States since model year 1996. The EOBD standard has been mandatory for all petrol vehicles sold in the European Union since 2001 and all diesel ...

  8. The Best $100 You Can Spend on Your Car’s Maintenance in 2025

    www.aol.com/m-mechanic-best-100-spend-130011428.html

    Nocera recommended the ANCEL AD310 Universal OBD II Scanner. ... and search online for the code readout’s meaning. This little device can save you the headache of going to the shop and spending ...

  9. Data link connector - Wikipedia

    en.wikipedia.org/wiki/Data_link_connector

    The data link connector (DLC) is the multi-pin diagnostic connection port for automobiles, trucks, and motorcycles used to interface a scan tool with the control modules of a given vehicle and access on-board diagnostics and live data streams. [1] Prior to 1996, many OBD-I data link connector's were in the engine compartment, usually near the ...