Home >> BMW >> 2011 >> X6 ActiveHybrid >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Codes (ACTIVEHYBRID) - DTC P0300, BMW DTC 140001 Through DTC P1408, BMW DTC 193108 >> DTC P135B, BMW DTC 168108: Knock-sensor signal 2, signal: implausible >> Fault code