Home >> BMW >> 2011 >> 760Li >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N74 - Diagnostic Trouble Codes - DTC P2089 (BMW DTC 130001) Through DTC P144B (BMW DTC 193208) >> DTC P304A; BMW DTC 138401: Radiator shutter, top, actuator internal: electrical fault >> Fault code