The Controller Area Network bus (CAN bus) is the hub of a vehicle's interconnectivity. This is relevant since the car relies on electrical impulses to perform a wide variety of tasks. The car includes various features, including door locks, a speedometer, a gas gauge, brake and gas pedal controls, and more. This network is used by several of these devices for communicating.
An automobile's OBD-II (Onboard diagnostics 2) connector is a port that reads diagnostic trouble codes. When we take our cars in for repairs, the mechanic will often hook a computer into this port to read the problem message. This allows for considerably faster troubleshooting of any difficulties, including those that don't necessarily trigger the check engine light. Access to these ports is typically straightforward. Typically, they are located in one of three places: under the dashboard on the passenger side, behind the steering column, or by the pedals. The OBD-II connector is the point of entry for CAN bus communication.