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DTC B1900: Communication Circuit Error (BUS Off)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A  ).
  1. Clear the DTCs with the HDS.
  2. Turn the ignition switch to LOCK (0) and then back to ON (II).
  3. Wait for at least 6 seconds.
  4. Check for DTCs with the HDS.

    Is DTC B1900 indicated? 

    YES  - Troubleshoot DTC B1000 (see DTC TROUBLESHOOTING  ).

    NO  - Intermittent failure, the system is OK at this time.