CAN Bus Errors

CAN Diagnostics information can be found under the Communications Tab in the Runtime (F3) menu.

Last Error Code Status

  • Ack Error. This normally indicates the ECU cannot communicate with other devices on the BUS. Check all devices are running the same BUS Baud rate.
  • BIT 0 Error. If this error is constant, it normally indicates a direct short between CAN Lo and CAN Hi.
  • BIT 1 Error. If this error is constant, it normally indicates a direct short between CAN Lo and CAN Hi.
  • BIT 0 & Ack Error. If the error is toggling between these two messages, this normally indicates the CAN Lo and CAN Hi are reversed. 

Command Bus Errors

  • Emtron Transmitting data , but receiving device is missing from the CAN Bus.

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  • Emtron Transmitting data , but receiving device is missing from the CAN Bus and 120 Ohm terminating resistor missing.

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