B guide · Reviewed 2026-08-27

Bosch Washer won’t drain

A washer that will not drain usually has a restricted filter or hose, a pump obstruction, a failed pump, or a sensing/control problem.

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What this evidence points to

The fastest path is to identify whether water moves slowly, whether the pump hums, and which free checks are already ruled out.

Bosch commonly uses an E-Nr plus revision number. Both can matter when matching support information. The fastest path is to identify whether water moves slowly, whether the pump hums, and which free checks are already ruled out.

Model check: Look on the door edge or rating plate for the complete E-Nr/model identifier. Official Bosch support →
Stop condition

Stop if water is actively flooding, wiring smells hot, or the breaker trips.

Free and low-risk checks first

Likely next actions

Ranked, not exhaustive
1

Clean the pump filter

Inspect and clean the user-accessible drain filter.

$0–$515–35 minEasyLow
2

Check the drain hose and standpipe

Inspect for kinks, crushing, blockage or incorrect insertion depth.

$0–$1515–35 minEasyLow
3

Inspect the pump impeller for obstruction

Check the accessible pump cavity for debris and damaged movement.

$0–$1520–45 minModerateMedium
4

Test or replace the drain pump

Use the model-specific procedure to confirm pump operation before replacement.

$55–$32045–120 minAdvancedMedium
5

Professional sensing/control diagnosis

Have a technician test pressure sensing, wiring and control output.

$120–$48060–120 minAdvancedPro only
Remove the checks I already tried
Transparent evidence

What FixEvidence outcomes show

Outcome data is still growing

We do not publish a success percentage until there are at least five relevant attempts. Official guidance remains clearly separate from user outcomes.

Add a repair outcome →
Know when to stop

Is another repair worth it?

Compare age, money already spent, next repair cost and replacement price.

Run the calculation

Frequently asked questions

Should I replace a part based only on an error code?

No. An error code identifies a detected condition, not always the failed component. Rule out safe, inexpensive causes and confirm against the exact model.

Why does FixEvidence ask what I already tried?

Because the best next action changes when earlier checks have failed. Removing repeated advice is central to the ranking engine.

Are FixEvidence success rates verified?

Every percentage displays its number of attempts and confidence. Model photos, receipts, invoices, technicians and completed follow-ups are tracked as separate evidence signals.