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.
Door contact (reed contact) defective
Models: TWF 640, TWF 720, TWF 760, TWF 780, TCF 620, TCF 630, TCF 640, TDB 130, TDB 230
Door contact (reed contact) defective
Models: TWR 780, TWR 860, TWL 780, TCJ 680
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.