Miele Dishwasher Error Code F43: How to Fix It

Q: What does error code F43 mean on a Miele dishwasher?

Error code F43 indicates a conductivity sensor fault, meaning the sensor that measures water hardness or detergent concentration is malfunctioning.

Q: Can I use my Miele dishwasher with error F43?

It's not recommended. The dishwasher may stop mid-cycle or not clean properly. Continuing to use it could cause further damage.

Q: How do I clean the conductivity sensor on my Miele dishwasher?

Remove the sensor and soak it in white vinegar or a descaling solution for 30 minutes to remove mineral deposits. Rinse and reinstall.

Q: Is the Miele dishwasher conductivity sensor expensive to replace?

The sensor itself typically costs $50-100. You can DIY if you have basic electrical skills, but professional replacement including labor may be $150-300.

Q: Why does error F43 keep coming back?

Persistent F43 often indicates a failing sensor, wiring short, or main board issue. It could also be caused by hard water buildup. Clean the sensor first; if error returns, replace it.

Abstract

Miele dishwasher error code F43 indicates a fault with the conductivity sensor, which measures water hardness and detergent levels. This error often points to a dirty or faulty sensor, wiring issues, or a main board problem. Follow these steps to troubleshoot and fix the issue.