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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC B258A: Low Beam >> Actions Taken When the DTC Sets

Actions Taken When the DTC Sets

DTC B258A 01 or B258A 04 

The low beam headlamps will not operate.

DTC B258A 02 

The low beam headlamps will always be ON.