38.2.5.2 Restricted Operation Mode

In Restricted Operation mode, the node is able to receive data and remote frames and to Acknowledge valid frames, but it does not send data frames, remote frames, error frames, or overload frames. In case of an Error or Overload condition, it does not send dominant bits; instead, it waits for the bus to enter the Idle condition to resynchronize itself to the CAN communication. The error counters are not incremented.