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Home >> Buick >> 2014 >> Regal GS, FWD, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 395 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1020: Auxiliary Electronic Control Unit (ECU) Performance >> Conditions for Setting the DTC
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Conditions for Setting the DTC

WARNING: This page is about a different car, the 2014 Chevrolet Cruze. However, it is still accessible from the selected car via links, so may be relevant.

The radio receives an improper status response indicating an internal ECU fault in the radio controls.