Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

DTC B0100 for the EFS-LF or B0103 for the EFS-RF will set when one of the following conditions occur:
- A valid ID message is not received within 5 seconds of the EFS being powered up.
- A status message is not received.
- The SDM has reset the EFS twice without detecting a valid ID message.
DTC B0101 for the EFS-LF or B0104 for the EFS-RF will set when the SDM has received a NOK message from the EFS.
DTC B0102 for the EFS-LF or B0105 for the EFS-RF will set when one of the following conditions occur:
- The SDM has received an ID message from the EFS which does not match the ID stored in the SDM memory.
- The SDM has reset the EFS twice without detecting the correct ID message.