Error Code E03 — Which Appliance Do You Have?
Error code E03 appears on 2 brands across 2 appliance types — and it means something different on each one.
Select your brand and appliance below to see exactly what E03 means on your machine, what causes it, and the step-by-step fix.
Broan-NuTone
Bosch
Why does the same code mean different things?
Appliance manufacturers each define their own diagnostic codes. A code like E03 may indicate a water supply issue on one brand and a sensor fault on another. Always look up the code for your specific brand and appliance type — fixing the wrong component wastes time and money.