Home >> BMW >> 2012 >> 760Li >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N74 - Diagnostic Trouble Codes - DTC P15D0 (BMW DTC 20A701) Through DTC U1128 (BMW DTC CDC304) >> DTC U0137; BMW DTC CDA904: Message (status, trailer, 0x2E4) missing, Digital Motor Electronics / Digital Diesel Electronics receiver, trailer module transmitter >> Service instruction