Hi
what will happen if i connect CANH to CANL and CANL to CANH.
will it CAN bus will work in this condition?
or that node will go in busoff state?

 

The miswired node would probably see enough errors that it would kick itself off the bus but I wouldn't count on it.

 

When you miswire it in that way, what should be a dominant bit actually looks like a recessive bit to the receiving node so it won't throw a bit error and the transmitting node won't throw a bit error so the transmitting node might conclude that it is lonely and retry the transmission forever.