If you’ve ever opened your Samsung dishwasher only to see the dreaded Error Code E12 / E20 flashing on the display, you’re definitely not alone. These codes point to a “water wall sensor error”—basically, your dishwasher is having trouble moving water the way it should. Let’s break down what’s happening, a few things you can try yourself, and when it’s time to reach out for professional help.
First, a little background: The “water wall” is a unique part of many Samsung dishwashers. Instead of the old-school spinning spray arms, there’s a moving bar that glides back and forth, blasting dishes clean from all angles. The sensor tracks this motion and lets the dishwasher know if something’s not working right.
When the Error Code E12 / E20 pops up, the dishwasher is telling you the water wall sensor isn’t sending the right signals. This could be because of a jam, blockage, electrical glitch, or even just a dirty sensor.
Before you call for emergency help, there are a couple of things you can check at home:
1. Turn It Off and On Again:
It might sound cliché, but unplugging your dishwasher for a minute and plugging it back in can reset the system and clear up minor glitches.
2. Clean the Filter and Spray Bar:
Sometimes, a simple clog can throw everything off. Open up the bottom of your dishwasher and carefully remove any food debris from the filter and spray bar. A toothbrush or a quick rinse in the sink often does the trick.
3. Check for Obstructions:
Open the dishwasher and slide the water wall bar by hand (gently). If it feels stuck, look for anything blocking its path—sometimes a fallen fork or a bit of broken glass can jam things up.
4. Inspect the Sensor:
If you’re comfortable taking things a step further, you can carefully wipe the water wall sensor area with a soft, damp cloth. Just make sure to unplug the machine first for safety.
If you’ve tried the steps above and that error code just won’t go away, there’s a good chance the problem is deeper—like a faulty sensor or wiring issue. These fixes often require specialized tools and knowledge, so it’s usually best (and safest) to call in the experts.
Our local team specializes in Samsung dishwasher repairs across Toronto and the GTA. We know how frustrating it is to be stuck without a working dishwasher, so we offer fast, same-day appointments—even in an emergency. Plus, when you book online, you get $25 off on all repairs, and we offer a free service call with repair—no hidden fees.
If you’re searching for “dishwasher repair near me,” you’re in the right place. Don’t let a stubborn error code ruin your day. Whether you want express repair or just some honest advice, our technicians are ready to help. Simply contact us here to get started, or book your appointment online for fast service.
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