Bosch Dishwasher E24 Error Code - Drain Flow Restriction Fault

What Caused This Error?

The control system reports E24 when the monitored condition described by the error code is outside the expected operating range. In this case, the most likely trigger is garbage disposal knockout plug not removed. Other common contributors include clogged internal micro-filter and blocked drain hose air gap.

Step-by-Step Diagnostic Check

1. Remove coarse and fine stainless steel filters from tub floor and wash under hot water.
2. Check garbage disposal entry port for obstruction or unremoved plastic knockout plug.
3. Remove white plastic drain pump cover inside sump and check impeller for seed or bone blockage.
4. Verify drain hose is free of kinks and elevated in high loop.