What F02 Means
F02 is the open-circuit counterpart of F01: the water/heating NTC sensor or its leads have gone open rather than shorted. Miele’s documentation records the same outcome — heating is not activated and rinse aid is not dispensed.
Common Causes of F02
- NTC temperature sensor failed open
- Break in the sensor leads
- Plug unseated at the electronics
🔧 One Safe Check You Can Try
With the machine switched off, pull the filter combination out and look at the sump for anything that could have snagged a cable, then run a short program and feel the door glass part-way through. A door that never warms tells you the heating genuinely is not running.
⚠ Why You Shouldn't Go Further Than That
- An open circuit can lie in the sensor, in the lead or at the plug, and Miele’s procedure works along all three with a meter rather than replacing the most accessible one.
- The sensor lives in the wash water circuit, so removing it opens a water joint that has to be resealed properly or it weeps into the base of the machine.
- Cold washes leave grease on the load and in the machine itself, so the longer this runs undiagnosed the more secondary cleaning it leaves behind.
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
- F02
- 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.