Three DTCs have been added for 2006-2009 Honda Civic Hybrid models. These DTCs were not originally listed in the service manual.
Following are the new DTCs (SAE and Honda codes):
Software incompatibility with ECM/PCM. The PGM-F1 software needs to be updated.
Software incompatibility with transmission control module. The CVT software needs to be updated.
Software incompatibility with battery energy control module A. The IMA battery software needs to be updated.
On 2006-2009 Civic Hybrids, the latest software version for the PGM-F1, CVT and IMA battery systems requires that all systems have the most recent software updates. Because of this, updating one system causes one or more other systems to set a DTC when you turn the ignition switch to LOCK (0) and then to ON (II). The DTC(s) cannot be cleared until all systems are updated.
Update all systems as needed, turn the ignition switch to LOCK and then to ON, then clear all DTCs with the HDS.
NextHighlander HV DTC