Bosch puts a code on the panel for the drain faults it can see itself, and the E-series codes are worth reading before the machine is pulled out from under the counter. The display is the fastest way in: E15 on a Bosch dishwasher means safety switch detected water in the base of the dishwasher [S3] (the panel may show E24, E25, E23 for related conditions). Completed jobs carrying it average $301 (n=22). The symptom that brings people here is standing water at the bottom of the tub — in the wild it shows up as standing water at the bottom of the tub, won't drain, hums but doesn't drain or water left after the cycle finishes. Below, every cause is priced and timed, cheapest first.
hums but doesn't drain standing water at the bottom of the tub E25 E23
E25 and E23 both point at the pump; humming with no drainage is the classic sign
the source publishes an installed price for a drain pump replacement ($210-360), not a part-only price; no part-only figure is claimed here
won't drain controls seem dead E15
the pump drains the tub, not the base pan, so the machine can pump forever and never clear the water that tripped the float
the base-pan job is priced as a completed repair ($301 median, $266-390 middle half), not as a part
won't drain controls seem dead E15
the source recommends draining the pan and testing the switch for continuity before replacing anything; on some models the float sticks even with a dry pan
OEM float switch part number is documented (00165256) but no verified part-only price was found for this record; not claimed
OEM part number: 00165256.
Under 5 years old: repair almost always wins. Over 8 years old AND the quote is more than half the price of a comparable new unit: replacement is usually the better value. [S2]
the replacement threshold used by the cost source (over eight years old + quote above half the price of a comparable new unit -> replace). This is a decision rule, not a manufacturer lifespan specification.
Run your own quote through the calculator — the same half-of-new-price rule with your numbers.
standing water at the bottom of the tub water left after the cycle finishes E24
the E24 code points at exactly this: drain filter blocked
won't drain water left after the cycle finishes
the cost guide groups filter, air gap and drain hose clearing into one $130-200 job
won't drain
| Cause | Cost | Time | DIY? |
|---|---|---|---|
| clogged filter | no part needed | 20 min | easy |
| blocked or kinked drain hose | no part needed | 30 min | easy |
| clogged air gap (only if one is fitted) | no part needed | 25 min | easy |
| float switch stuck in the up position, or failed | not priced | 45 min | advanced |
| drain pump blocked, or pump cover loose or missing | $210–$360 installed | 75 min | advanced |
| water in the base pan, anti-flood lockout | $266–$390 installed | 60 min | advanced |
A technician visit starts with a diagnostic fee of $75–$110 [S2]. Completed repairs run $130–$360 [S2].
This applies to the 300, 500, 800, Benchmark series. Model numbers seen in this group: SHE53TL2UC, SHE863WF2N, SHE53C82N.
Last verified: 2026-09-17. Prices are US market figures from the sources above; your quote may differ.