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On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to detect failures that may increase the vehicle tailpipe emissions to more than 150% of the standard to which it was originally certified.
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.
The scan tool is connected to the vehicle's data link connector (DLC) and, depending on the particular tool, may only read out diagnostic trouble codes or DTC's (this would be considered a "code reader") or may have more capabilities. Actual scan tools will display live data stream (inputs and outputs), have bi-directional controls (the ability ...
Hum is a vehicle diagnostic and tracking system from Verizon Communications. The system is composed of two devices: a diagnostics reader which connects to a vehicle's OBDII and a speaker with Bluetooth connectivity that can be clipped to the visor. [ 1 ]
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VCDS (an abbreviation for "VAG-COM Diagnostic System" and formerly known as VAG-COM [2] [3]) is a Microsoft Windows-based software package, [3] developed and produced by Ross-Tech, LLC since May 2000. [1]
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