Miele Dishwasher Error Code F40: How to Fix It

Q: What does Miele error code F40 mean?

Error code F40 indicates a detergent dispenser fault. The dishwasher's control system has detected that the dispenser is not opening or closing properly, or there is an electrical issue with the dispenser actuator.

Q: Can I continue using my Miele dishwasher with error F40?

You can use the dishwasher, but the detergent may not be released properly, resulting in poor cleaning. It's best to fix the error to ensure optimal performance.

Q: How do I clean the detergent dispenser on my Miele dishwasher?

Remove any visible debris or dried detergent from the dispenser compartment. Use a damp cloth to wipe it clean. For stubborn buildup, use a soft brush. Avoid using harsh chemicals.

Q: Where is the detergent dispenser solenoid located?

The solenoid is attached to the back of the detergent dispenser assembly, inside the door panel. You may need to remove the inner door cover to access it.

Q: How much does a Miele detergent dispenser replacement cost?

The part itself typically costs between $50 and $150 depending on your model. Labor from a technician can add $100–$200 if you hire a pro.

Abstract

Your Miele dishwasher is displaying error code F40, indicating a fault with the detergent dispenser assembly. This error usually means the dispenser door isn't opening or closing properly, or the internal mechanisms have jammed. Follow these steps to diagnose and fix the problem.