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Home › Buick › 2001 › LeSabre Custom, 4T65E/MN3 › Repair and Diagnosis › Body & Frame › Door Locks › Anti-Theft System › Diagnostic Tests › DTC B3031: Key Decoder In Learn Mode › Code Enable Criteria

Code Enable Criteria

Following criteria must be met to enable DTC:

VTD module must see ignition switch input.
VTD module cannot have DTC B1327 set as a current DTC.