Home >> Audi >> 2015 >> S8 >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> 4.0L - Generic Scan Tool - Engine Code(S): CTFA & CTGA (General Information) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Modes 01 - 0A >> Diagnostic Mode 03 - Read DTC Memory >> U-Codes