What 1E means
Water isn't getting through the filter.
Also shown as: IE, depending on the model.
Likely causes
- Food debris clogging the fine filter
Safe first checks
- Remove and clean the fine filter at the bottom of the dishwasher (see your manual for how).
When to stop
If the code returns after cleaning the filter, request service.
Checked against: Samsung US: Samsung dishwasher is displaying an error code. Codes can differ by model and year, so confirm with your owner's manual.