Miele Dishwasher Fault Code F88 Meaning and Possible Fixes
Miele Dishwasher Fault Code F88
If your Miele dishwasher displays fault code F88, the appliance has detected a turbidity sensor fault that cannot be resolved without professional assistance.
View all Miele dishwasher fault codes
What the F88 Fault Code Means
The F88 fault code indicates a fault with the turbidity sensor. The turbidity sensor measures how dirty the wash water is during a cycle, allowing the machine to adjust programme length and water usage automatically. When this sensor fails or gives incorrect readings, the machine displays F88 and stops the programme. Miele confirms this is a technical fault that cannot be remedied by the user.
Common Reasons This Fault Appears
Faulty turbidity sensor
The sensor itself may have failed and is no longer providing accurate readings to the control board.
Contaminated turbidity sensor
Grease, detergent residue or limescale deposits on the sensor lens can affect its readings, potentially triggering this fault code.
Control board fault
An issue with the main electronic control module can affect its ability to read turbidity sensor data correctly.
Wiring fault
A loose or damaged electrical connection to the turbidity sensor can cause this fault to appear.
Safe Checks You Can Try
Run a dishwasher cleaning cycle
Run an empty cycle at a high temperature with a dishwasher cleaner to remove any grease or limescale deposits that may be coating the turbidity sensor lens.
Restart the dishwasher
Switch the machine off at the mains and leave it unplugged for a few minutes. Reconnect the power, switch back on and restart the programme. A power reset can sometimes clear a temporary fault.
Miele advises that if the fault persists, the appliance cannot be repaired without professional assistance.
If You Need Spare Parts
If you are confident carrying out the repair yourself, compatible Miele dishwasher parts are available on Amazon with next day delivery.
Always check your model number before ordering to ensure compatibility.
When To Contact A Professional
Miele advises that fault F88 is a technical fault that cannot be resolved without professional assistance. An engineer will need to inspect and replace the turbidity sensor or associated components.
Internal components should only be inspected or repaired by trained professionals.
Related Miele Dishwasher Fault Codes
You may also encounter related issues indicated by Miele Dishwasher Fault Code F87 and Miele Dishwasher Fault Code F91.
Fault codes may vary slightly between different Miele dishwasher models, so always consult the manufacturer documentation for your specific appliance.
🔧 Need a spare part? Find compatible parts for your appliance on Amazon with next day Prime delivery. Please double-check the part is compatible with your specific model before ordering. Find parts on Amazon
♻️ Not worth repairing? If your appliance has had its day, eco-friendly refurbished appliances are available at Renew 2 U — better for your wallet and the planet.