Conditions for Setting the DTC: Notes

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

DTC B0100 and B0103

A valid ID message is not received within 5 seconds of the EFS being powered up.
Status message is not received.
The SDM has failed twice to reset the EFS.

DTC B0102 and B0105

The SDM has received an ID message from the EFS that does not match the ID stored in the SDM memory.
When 2 EFS resets are attempted without the correct identification being detected by the SDM.