The short answer
Standing water in a SBV tub is a blocked path far more often than a dead pump. The table below carries a single model code for this family, so everything on this page describes one build: the panel layout and the part positions do not shift under you.
What you observe on these models
- Clean water standing in the sump after every cycle — Clean water means the wash finished and the drain failed at the end.
- The machine hums at the end of the cycle but the water level does not move — The pump is being asked to run and cannot turn, or it turns against a blocked outlet.
- A rattling or grinding sound during the drain step — Something hard is in the pump — glass, a fruit stone, a bone chip.
- NEAR MISS — water under the machine rather than inside it — That is a leak, not a drain fault, and it has its own page for this family.
Causes, most likely first on the SBV family
- The filter and sump are packed with soil — First, and it is free to check. The filter twists out by hand; if the sump under it is holding soil, the pump has been trying to push it through and failing.
- The disposal knockout plug was never removed, or the disposal is full — Ranked second on a family this young, because it is the classic new-installation fault: the dishwasher hose was connected to a disposal whose knockout plug is still in place, and the machine has never drained properly.
- The drain hose is kinked, trapped or has lost its high loop — Third. Check it before anything electrical: a hose with no high loop siphons the sink back into the tub, and a kink behind the cabinet stops the drain dead.
- The drain pump impeller is jammed by debris — It shows itself as a hum with no water movement, and it is the point on this list where the job stops being a rinse and starts being a repair.
- The drain pump has failed electrically, or the control is not calling it — Last. A pump that makes no sound at all when the drain step should run points at the pump winding or at the control that drives it, and either one is a service call.
Check in this order, and why
- Run the drain or cancel function first — It forces one clean drain attempt with nothing else happening, so you can hear whether the pump runs, hums or stays silent.
- Bail the tub out and pull the filter — Scoop the standing water with a cup and a towel, then twist the filter out and look in the sump with a light.
- Free the hose where it leaves the machine — The crush point is almost always where the hose passes the cabinet wall or sits behind the machine after it was last pushed back into place.
- Check the sink side before the machine side — Run the disposal, check the hose behind the cabinet for a kink, confirm the hose rises into a high loop or air gap, and clear the air gap cap if one is fitted.
- Stop here if the pump is silent — A drain step that produces no sound at all, with a clear filter and a clear hose, is an electrical fault at the pump or the control — and that is where the owner-side list ends.
Models in the SBV family — One code stands for this family, so the table is a single line and there is nothing to cross-check beyond it.
Reference| Model number | Family key |
|---|---|
| SBV8ZCX02A | bosch:dishwasher:sbv |
Before you open anything
Safety
Kill the power at the breaker before anything goes into the sump, and leave it off while you work; water and a live wash pump are the two hazards here and they are in the same place. Glass chips collect under the filter and cannot be seen through standing water, so bail first, then look, then reach.
When to call a technician
Call when the path is clear and the water still will not move. A clear filter, a clear hose, a working disposal and an unblocked air gap leave only the pump and the control, and both sit under the tub.
Other symptoms covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
