Is your KitchenAid dishwasher flashing mysterious diagnostic codes on its control panel? Don’t worry we’ve all been there! These codes might seem confusing at first, but they’re actually super helpful in figuring out what’s going on with your dishwasher.
Consider them your appliance’s way of sending you an SOS. Together, we’ll decode these messages and help you get your dishwasher back to sparkling dishes in no time!
What Are Diagnostic Codes?
When your KitchenAid dishwasher flashes a code, it’s not trying to intimidate you (promise!) it’s actually trying to help! These diagnostic codes are like little clues telling you exactly what’s wrong. They save time by helping you troubleshoot specific issues instead of guessing.
Instead of panicking with visions of sudsy kitchen floors, grab that user manual (or stick with us!) to figure out what your dishwasher is really saying.
The Most Common KitchenAid Diagnostic Codes and What They Mean
Here’s a handy cheat sheet to help you identify what those blinking lights and codes mean.

KitchenAid Diagnostic Codes Guide
Your dishwasher is having trouble with water flow. Maybe the water isn’t coming in fast enough, or there’s a blockage in the inlet pipe.
- Check that the water supply is on (easy fix alert!)
- Look for kinks in the water supply line
- Clean out or replace the water inlet valve if needed
Your dishwasher is struggling to drain properly! This could be because of a clogged drain or filter.
- Inspect and clean the drain filter at the bottom of the dishwasher
- Check the drain hose for clogs or kinks
- Ensure the garbage disposal isn’t blocked
Your dishwasher’s internal water temperature sensor is calling out cold water temps that might be preventing it from running effectively.
- Turn up the temperature on your water heater to minimum 120°F
- Run hot water in the sink before starting the dishwasher
Your dishwasher “thinks” it has too much water in it. It’s a safety mechanism to prevent flooding.
- Make sure your dishwasher is level
- Check the float switch for blockages
- Remove and clean out any water pooling obstructions
This signals a problem with keeping the water hot enough during the cycle, likely due to the heating element.
- Double-check that your home’s water heater is working
- Test the heating element with a multimeter
Your dishwasher is telling you the door isn’t fully closed or sealed. Without a secure door, it simply can’t start.
- Check for food particles or obstructions around the door seal
- Inspect for damaged or worn gasket that may need replacement
1. Code F1 or E1 – Water Supply Issue
This code means your dishwasher is having trouble with water flow. Maybe the water isn’t coming in fast enough, or there’s a blockage in the inlet pipe.
What to Do:
- Check that the water supply is on (easy fix alert!).
- Look for kinks in the water supply line.
- If those aren’t the culprits, you may want to clean out or replace the water inlet valve.
2. Code F2 or E2 – Drainage Problems
Uh-oh, your dishwasher is struggling to drain properly! This could be because of a clogged drain or filter.
What to Do:
- Inspect and clean the drain filter at the bottom of the dishwasher sometimes food bits get stuck there.
- Check the drain hose for clogs or kinks.
- Make sure the garbage disposal (if your dishwasher connects to one) isn’t blocked.
3. Code F6 or E6 – Water Temperature Too Low
Your dishwasher’s internal water temperature sensor is calling out cold water temps that might be preventing it from running effectively.
What to Do:
- Turn up the temperature on your water heater. A minimum of 120°F is usually best for dishwashers.
- Run hot water in the sink before starting the dishwasher.
4. Code F8 or E8 – Overfill Detected
If you’re seeing this code, it means your dishwasher “thinks” it has too much water in it (real or not). It’s a safety mechanism to prevent flooding.
What to Do:
- Make sure your dishwasher is level uneven placement could mess with its float sensor!
- Check the float switch (it’s a small mechanism inside the dishwasher that keeps track of water levels) for blockages.
- If water is pooling, remove and clean out any obstructions.
5. Code F9 or E9 – Heating Element Issue
This one signals a problem with keeping the water hot enough during the cycle, likely due to the heating element.
What to Do:
- Double-check that your home’s water heater is working as expected.
- Test the heating element with a multimeter (if you’re comfortable doing DIY repairs). If it’s faulty, a replacement might be in order.
6. Code F5 or E5 – Door Not Sealing Properly
Your dishwasher is telling you the door isn’t fully closed or sealed. Without a secure door, it simply can’t start.
What to Do:
- Check for food particles or obstructions around the door seal (ever drop a tiny spoon in there by accident?)
- If the seal is damaged or worn, you may need to replace the gasket.
Tips for Avoiding Diagnostic Codes in the Future
No one likes dealing with dishwasher drama, so here are some tips to keep yours running smoothly and reduce your chances of seeing another diagnostic code anytime soon!
- Clean Regularly: Wipe down the filter, gasket, and spray arms to prevent pesky blockages.
- Load Properly: Make sure nothing blocks the spray arms or door seal.
- Run Hot Water: Ensure hot water is available right from the start of your wash cycle to improve efficiency.
- Use the Right Detergent: Avoid generic or overly soapy detergents that could lead to clogs.
When Should You Call a Professional?
If you’ve tried everything and that stubborn code is still blinking, it’s probably time to call in the pros. A certified technician can run advanced diagnostics and handle repairs that you may not be comfortable with—no shame in that!
Final Thoughts
KitchenAid diagnostic codes may look intimidating, but they’re actually your dishwasher’s way of communicating with you like a secret language! With this guide, you’ll be able to decode the issue, try a few quick fixes, and (hopefully!) get back to spotless, squeaky-clean dishes in no time.
Still feeling stuck? Share your experience in the comments below we’d love to help troubleshoot with you! And don’t forget to bookmark this handy guide for the next time your dishwasher starts sending cryptic messages.
Happy dishwashing!