N16 and N18 Engine: Engine Ventilation Heating Faults Stored in DME Fault Memory After Programming

Bulletin number

M120212

Component

Engine

Summary

N16 and N18 Engine: Engine Ventilation Heating Faults Stored in DME Fault Memory After Programming. After reprogramming the vehicle to integration level R056-11-11-503 (ISTA/P P45.1.3.0) or higher, one of the following fault codes are stored in the DME fault memory: Vehicles with N16 engine: 2F42 Engine ventilation heating, Control The Service Engine Soon lamp is not illuminated. Vehicles with N18 engine: 37DE Engine ventilation, heating, triggering: open circuit The Service Engine Soon lamp is illuminated. 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. One of the following may be the cause: Loose or defective electrical connection Missing or defective crankcase ventilation heater relay.

Owners of these vehicles have filed 124 complaints in the engine category.