What F85 Means
F85 means the wash-water temperature sensor has failed, leaving the control board unable to confirm water is reaching the correct temperature for the selected program.
Common Causes of F85
- Failed or drifting temperature sensor
- Damaged sensor wiring
- Failed heating relay masquerading as a sensor fault
🔧 One Safe Check You Can Try
Check whether dishes are coming out cold-washed or with visible detergent residue, which supports a genuine temperature-sensing failure rather than a one-off glitch.
⚠ Why You Shouldn't Go Further Than That
- Confirming whether the sensor or the heating relay is the actual fault requires electrical testing, since both can produce a similar cold-wash symptom.
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.