What the control board is reporting, and which models and series this code applies to. Diagnosis on Miele appliances uses factory service software and procedures.
Main selection module (1N1-2) and vapour extraction electronic module (N1) communication fault
Models: KMDA 7474, KMDA 7633, KMDA 7634, KMDA 7774
A fault code identifies what the control detected, not which part failed. A sensor error can be the sensor, the harness, the connector, or the board reading it. ServiceON is a factory-authorized Miele service provider.