Home >> BMW >> 2008 >> 750Li >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes - DTC P1327-U1202 (N62) >> BMW Me9.2.3 (DTC P1327-U1202) >> DTC P3228, BMW Hex Code 0x2F71, BMW Code 12145: E-Box Control Circuit Fan Open Circuit (SIG) >> Fault debouncing