What F01 Means
On G-series Miele dishwashers, F01 is logged when the water/heating NTC temperature sensor or its leads are short-circuited. Miele’s service documentation notes the practical consequence directly: once this problem is registered the heating is not activated and rinse aid is no longer dispensed.
Common Causes of F01
- NTC temperature sensor internally short-circuited
- Sensor leads shorted or chafed against the tub
- Plug connection at the electronics damaged or wet
🔧 One Safe Check You Can Try
Look at what is coming out of the machine rather than at the machine itself. Dishes that are cool to the touch at the end of a program, and glasses drying with streaks because no rinse aid went in, are exactly the pattern this problem produces and are worth confirming before you book.
⚠ Why You Shouldn't Go Further Than That
- Miele’s procedure checks the sensor against a defined resistance curve before condemning it, and that measurement needs a meter on a de-energised machine, not a guess from the signs.
- The sensor and its plug sit in the base of the appliance alongside mains wiring and the water path, which is the worst combination to probe blind.
- Because a short here also stops rinse aid, people often chase the dispenser instead — and replacing a perfectly good dispenser leaves the real problem in place.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.
Technical Reference
- Code
- F01
- Appliance
- Miele dishwasher
- Maker documentation
- Miele owner manuals and use & care guides
- Checked
- September 2026
Code meanings can change between control generations. Before acting on a code, match the full model number on your appliance's rating label against the manual for that model. We are an independent repair service, not affiliated with Miele & Cie. KG.