LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> DTC B0077, B0079, B0080: EFS Valid Identification Message Not Received/EFS Identification Error/EFS NOK Message >> Conditions For Setting DTC
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Conditions For Setting DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 GMC C3500 HD, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC B0077 will set when SDM does not receive a valid identification message within 5 seconds of EFS being powered up, status message is not retrieved or SDM has reset EFS twice without detecting valid identification message.

DTC B0079 will set when SDM receives an identification message from EFS that does not match identification stored in memory or after SDM has tried twice to reset EFS without detecting correct identification message. DTC B0080 will set when SDM has received a Not Okay (NOK) message from EFS.

scientia non olet · About LEMON Manuals