Solved
Internal pull-up/down resistors in the Rx/Tx pins for CAN
Split from this thread.
i've had the same issue. Set the internal pull-up on Rx pin and pull-down on Tx pin.
It's comprehensible but it should be a pull-up and not a pull down resistor. May be to handle the transients and to ensure the node are asserting recessive state if the pin is not yet initialized.
But you need to check if the transceiver has that pull-up on Tx internally:
Ex, MCP2551:
So if the transceiver has that resistor, you don't have to activate the resistor from the MCU side.
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