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Immobilizer-Keyless Control Unit DTC Index

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

Immobilizer-Keyless Control Unit 

IMMOBILIZER-KEYLESS CONTROL UNIT DTC TROUBLESHOOTING TABLE

DTC Description DTC type
B1900  Communication bus line error (BUS-OFF) Loss of communication
B1905 Immobilizer-keyless control unit lost communication with MICU (DRLOCKSW message) Loss of communication
B1906 Immobilizer-keyless control unit lost communication with gauge control module (A/T message) Loss of communication