CAN bus stuck refers to the shutdown of some nodes or buses, mainly due to hardware.
First, the bus communication is subjected to relatively strong electromagnetic interference, resulting in data confusion; Second, the cable is damaged or the node interface chip is damaged, resulting in data transmission can not achieve a complete response.
Regardless of the reason, can communication will result in arbitration failure, bit filling failure, the sending node will produce an error count, and when the counter value overflows, it will close the bus, that is, the bus is stuck.