The short answer
This page covers the Bosch SHE-series dishwasher, the models whose number carries the SHE prefix. When a Bosch dishwasher starts leaving dishes dirty, the filter in the floor of the tub is the first thing to look at. This platform uses a filter the owner is expected to remove and rinse, and when it blocks the machine recirculates the same soiled water through the spray arms for the whole cycle.
What you observe on these models
- A gritty film on everything, worst on the lower rack — Recirculated soil. The machine is washing with water it never cleaned, and the lower rack gets the most of it.
- A chalky white haze on glassware — Hard water and rinse aid rather than soil.
- Detergent left undissolved in the dispenser at the end — The dispenser door never opened, or opened against an obstruction - usually a tall item in the lower rack.
- NEAR MISS - dishes come out clean but wet — That is condensation drying doing what it does, and rinse aid is the answer.
Causes, most likely first on this family
- A blocked filter in the tub floor — First on this platform and by a wide margin. The filter is designed to be removed and rinsed by the owner; when it is not, the machine recirculates soil for the whole cycle.
- The detergent dispenser door blocked or opening late — Second, and easy to miss: a tall item leaning against the door means the detergent is released at the wrong moment or not at all.
- Spray arm jets blocked, or an arm that cannot turn freely — Third. Debris and scale close the small holes, and a handle or a pan protruding through the rack stops the arm where it stands.
- Loading and water temperature — Fourth. Nested bowls, overlapping plates and shadowed items are exactly as unwashed as the spray pattern makes them, and cold incoming water shortens the effective wash.
- The wash pump, the diverter or the heating circuit — Last. A genuine pressure or heat fault exists, but it is diagnosed after the four above because those four explain most of the complaints on this platform.
- Where this ranking departs from the brand-generic page — The cause that moves is a blocked filter in the tub floor: it leads here because the filter assembly and the lower arm on these models lift out together without a tool, so the two checks that matter most are made at the same moment.
Check in this order, and why
- Twist out the filter assembly and rinse it under a tap — On these models the filter assembly and the lower arm on these models lift out together without a tool, so the two checks that matter most are made at the same moment, which is why this check leads. Look at what comes out. A filter that has never been cleaned is the diagnosis, and rinsing it is also the repair.
- Run a cycle and look at the dispenser at the end — Detergent still in the cup means the door did not open properly, which is a loading problem far more often than a mechanical one.
- Spin each spray arm by hand and hold it up to the light — Every jet should pass light. Clear blocked holes with a cocktail stick and check nothing in the racks fouls the arm's sweep.
- Look at how the last load was stacked — Nested bowls and overlapping plates shadow each other.
Before you open anything
Safety
Switch the machine off at its breaker before reaching under the tub or moving it out of its opening - a capacitor can hold a charge after the power is off. Take care with the filter area after a hot cycle; the sump holds hot water.
When to call a technician
Call when the filter is clean, every jet passes light, the dispenser opens freely, the load is sensible and the dishes still come out dirty. What remains is wash pressure, the diverter or the heating circuit - all diagnosed with the machine running and the panels off.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
