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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Electrical >> Charging Systems >> Plug-In Charging >> Diagnostic Information and Procedures >> DTC P1EF0 or P1EF1 >> Circuit/System Description
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Circuit/System Description

The battery charger monitors the high voltage DC output current and voltage from each of its two high voltage DC to DC converters to ensure the output is in the proper range.