Start of drain
Good initial flow
Water left the machine strongly enough to make a complete blockage look unlikely.
Error-code case · Bosch E24
A Strong Initial Drain Hid the Obstruction
The dishwasher moved water normally at first, yet stopped pumping before the final amount was gone. Inspection found hair wrapped around the impeller — a load-dependent restriction that a quick flow observation had missed.
Why the pump looked good during a short observation
A partially loaded impeller may start, move water and sound normal. As the strand shifts or motor load changes, the pump can slow or stop before the sump is empty. A brief discharge test therefore does not prove the impeller remains free throughout the drain.
A similar symptom can have a different cause on another Bosch dishwasher. A hose restriction, check valve, household connection, weak pump or interrupted electrical command can also produce E24 or incomplete draining.
The sequence mattered more than the E24 label
The drain was not simply blocked or working; its behavior changed during the same drain attempt.
Before empty
Early pump stop
The motor stopped before all water was removed, leaving a small amount in the tub.
Physical inspection
Physical finding
Hair was explicitly found wrapped around the pump impeller.
What the field discussion confirmed
The technician returned to the discussion and reported finding the obstruction after saying the problem was understood. That explicit physical finding makes this a confirmed case rather than a proposed diagnostic branch.
The finding explains this drain sequence, but one confirmed obstruction does not make hair the cause of every Bosch E24.
Verify the full drain, not only pump startup
Hair around the impeller closes the diagnosis for this documented case: it explains why the pump started strongly and then stopped before the sump was empty. After removing the obstruction, verify the complete drain rather than relying on pump sound alone.
If E24 returns, continue through the accessible filter, drain route, check valve and household connection before condemning the pump. Similar symptoms can have different causes, so the observed drain sequence remains more useful than the error code by itself.
The practical endpoint is a full, repeatable drain with no water left in the sump.
Water, glass and electrical safety: disconnect power and control standing water before accessing the pump. Broken glass and sharp debris may be hidden near the impeller; internal inspection is qualified-service work.