Home >> BMW >> 2008 >> M3 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes - DTC P1602 - DTC U1153 (S65) >> MSS60 Engine Operating System DTCS >> DTC P1681, BMW Hex Code 0x2B55, BMW Code 11093: Electronic Throttle Control Monitor Level 2/3 Engine Speed Calculation Error (MIN) >> Calculated value Y/N