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How does CAN bus work? A full course on auto diagnostics: https://autotema45.ru/wpm/start Actually, CAN bus is the same wires, but data is transmitted through these wires. For example, if in conventional wiring, in order to bring all these signals to the instrument panel, five wires are required. Then when using CAN bus, all this data can be transmitted through two wires. The wiring in the CAN bus is made in the form of a twisted pair. This is done to protect against interference. More precisely, not for protection, but to recognize interference. If the wires are located together, then the interference will affect the signal of each wire equally. Thanks to this, the controller will be able to recognize this interference, and at the output it will already give the correct signal, without interference.