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Home >> Buick >> 2016 >> Cascada Base >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC B1390: Control Module Supply Circuit 1 >> Conditions for Setting the DTC

Conditions for Setting the DTC

The control module or sensor detects a system voltage of less than approximately 9 V or greater than 15 V for approximately 5 s.