Start with the filter and sink
Food debris and a slow household drain can both create a drain-code symptom. Remove visible debris and clean the dishwasher filter only as the manual allows.
If the sink or disposal is slow, fix that path before blaming the dishwasher.
Check hose routing
Inspect the drain hose under the sink for kinks, sags, or a pinched section. If the dishwasher uses an air gap, check for visible backup there too.
Do not remove built-in panels or reach into hidden areas while the dishwasher is powered.
- Record whether water remains in the tub.
- Clean accessible filter parts.
- Check sink and disposal drainage.
- Inspect visible drain hose sections.
- Run one short rinse or drain test.
When i20 repeats
Repeated i20 after filter and hose checks can point to pump, sensor, or internal restriction. That is where model-specific support becomes important.
Avoid repeated full wash cycles while the drain problem is unresolved.
Model numbers affected
Commonly searched model families include built-in dishwashers, front-control dishwashers, top-control dishwashers, and compact dishwashers.
This is not a confirmed model-number list. Match the exact code to the full model number on the appliance tag before ordering parts, opening panels, or booking service.
Related code pages
Editorial note
This guide is independent educational content. It does not replace the model-specific manual, official manufacturer support, or qualified repair service.