Home >> BMW >> 2010 >> 535i Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes - DTC P150A - U1166 (N54) >> BMW MSD80 >> DTC P16B1, BMW Hex Code 0x2D56, BMW Code 11606: Control Module Self-Test, Idle Air Control System Integrated Component Plausibility (SIG) >> Possible Fault Causes