Double open can bus wire fault identification

A method for determining a two wire open fault on a two wire communications bus comprising:

• determining a threshold in response to a first data from a first electronic control unit and a second data received from a second electronic control unit via the two wire communications bus, wherein the first data includes a first plurality of dominant bits and a first plurality of recessive bits and the second data includes a second plurality of dominant bits and a second plurality of recessive bits;
• determining a current network health indicator in response to a third data from the first electronic control unit having a third plurality of dominant bits and a third plurality of recessive bits;
• and
• generating a double wire open fault error report in response to the current network health indicator exceeding the threshold.

A method of determining a two wire communications bus fault comprising:

• receiving, from a first network device, a first data having a first plurality of recessive bits;
• determining a recessive bit intensity and a recessive bit variation in response to the first plurality of recessive bits;
• calculating a network health indicator in response to a ratio of the recessive bit intensity and the recessive bit variation;
• generating a two wire open fault alert in response to the network health indicator exceeding a threshold;
• and
• displaying the two wire open fault alert to a user.