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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications System >> Diagnostic Information and Procedures >> DTC U1821 >> Circuit/System Verification

Circuit/System Verification

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Verify that DTC U0074, P06E4, B1428, B1370, B1380, B1440, B1441, B1325, or P0562 is not set.