Home >> BMW >> 2011 >> X6 ActiveHybrid >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Codes (ACTIVEHYBRID) - DTC P144B, BMW DTC 193208 Through DTC P060C, BMW DTC 200C08 >> DTC P1551, BMW DTC 1B9004: Engine switch-off time: timeout or invalidity value >> Fault code