DTC Troubleshooting: B1155

DTC B1155:  Gauge Control Module Lost Communication with the MICU (HLSW Message)


1.Clear the DTCs with the HDS.

2.Turn the ignition switch OFF, and then back ON (II).

3.Wait for 6 seconds or more.

4.Check for DTCs with the HDS.

Is DTC B1155 indicated?


YES - Go to 5.


NO - Intermittent failure. The gauge control module (tach) is OK at this time.n


5.Check for DTCs with the HDS.

Are all of DTCs B1155 and B2355 also indicated at the same time?


YES - Faulty MICU; replace the under-dash fuse/relay box.n


NO - Replace the gauge control module (tach).n