Home >> BMW >> 2009 >> M3 2D Convertible, Automatic DCT >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes - DTC P1602 - DTC U1153 (S65) >> MSS60 Engine Operating System DTCS >> DTC P1634, BMW Hex Code 0x2B27, BMW Code 11047: Throttle Valve Adaptation Spring Test Failed (Bank 1) (SIG) >> System test