B1900

DTC Troubleshooting: B1900

DTC B1900: Communication Bus Line Error (Bus-OFF)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. 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 6 seconds or more.

4. Check for DTCs with the HDS.

Are DTCs B1000, B1008, B1011, B1032, and/or B1750 also indicated with DTC B1900?
YES - Troubleshoot DTC B1000.

NO - If only DTC B1900 is present, replace the immobilizer-keyless control unit. If no DTCs are present, it's an intermittent failure, the system is OK at this time. Check for loose or poor connections at the immobilizer control unit 7P connector, and at under-dash fuse/relay box connector Q (16P).