N18 Engine: FC 37DE Engine Ventilation, Heating, Triggering Stored in the DME After Programming. The Service Engine Soon lamp is illuminated after reprogramming the vehicle to integration level R056-11-11503 (ISTA/P P45.1.3.0) or higher. When diagnosed, the following fault code is stored in DME fault memory: ??37DE Engine ventilation, heating, triggering: open circuit CAUSE Due to a DME software change, the diagnostic monitoring capability is improved for the engine ventilation heating system. However, a fault will be stored in the fault memory because the engine ventilation heater circuit has a malfunction currently present.
