Bosch SHEM63W55N Dishwasher Problems & Error Codes — Overview
The Bosch SHEM63W55N is a 24-inch built-in dishwasher that shares drainage and pump architecture with other Bosch 300 Series machines. The most frequent service calls involve E24 and E25 error codes, both tied to the drain system. Bosch does not publish model-specific fault maps beyond these generic dishwasher codes, so diagnosis starts with the drain pump cover, pump cavity, drain hose, and air gap if installed.
Most E24 and E25 faults clear after removing the filter, inspecting the pump cover for a loose fit or debris, and checking the drain hose for kinks or clogs. If the pump motor does not run or runs weakly after the cavity is clean, the drain pump assembly is the next replacement. Bosch advises a 30-second breaker reset for some faults, and persistent codes after mechanical checks point to wiring or control-board output issues.
Most Common Problems on This Model
- E24 error code (drainage fault) Caused by a blocked drain pump cover, clogged drain hose, kinked hose, or air-gap obstruction—remove the filter and pump cover, clear debris, and check the hose for kinks.
- E25 error code (drain pump blocked) Triggered by a loose or mis-seated pump cover, debris in the pump impeller, or obstruction in the drain hose—reseat or replace the pump cover and inspect the impeller for glass, bone fragments, or grease buildup.
- Standing water in the sump after cycle Caused by a jammed or failed drain pump motor, clogged pump cavity, or blocked drain hose—clear the sump and hose, then replace the drain pump assembly if the motor does not run.
- Pump runs but does not drain Usually a kinked or crushed drain hose, clogged air gap, or blocked discharge line—disconnect the hose and verify it discharges freely into a bucket.
- Intermittent E24 or E25 after cleaning Caused by a damaged or warped pump cover that does not seal, allowing debris to re-enter the impeller—replace the pump cover.
- No error code but poor drainage Often a partially clogged filter, slow drain due to grease buildup in the pump cavity, or a weak pump motor—clean the filter and sump, then test the pump under load.
- Error code persists after drain system is clear Points to faulty wiring, a loose connector at the drain pump, or a failed control-board pump output—verify connections and voltage at the pump before replacing the control board.
- Pump cover loose or cracked Allows debris to bypass the filter and jam the impeller, triggering E25—inspect the cover for cracks, missing clips, or worn threads and replace if damaged.
Parts That Commonly Fail
| Part | Notes |
|---|---|
| Drain pump assembly | Amazon | Fails mechanically or electrically after debris jams the impeller or the motor windings degrade—replace if the pump does not run after the cavity is clear. |
| Drain pump cover | Amazon | Cracks, warps, or loses its seal over time, allowing debris to enter the pump—Bosch lists this as a primary check for E24 and E25 codes. |
| Drain hose | Amazon | Kinks, crushes, or clogs with food debris or grease—inspect the full length and replace if the inner walls have collapsed or the hose is permanently kinked. |
| Main control board | Amazon | Rarely fails on drain circuits but is the next step if wiring and pump are verified good and the code persists—Bosch advises professional diagnosis before replacement. |
Dishwasher Error Codes for This Model
These codes apply to this model line:
- Bosch Dishwasher E01 error code
- Bosch Dishwasher E02 error code
- Bosch Dishwasher E03 error code
- Bosch Dishwasher E04 error code
- Bosch Dishwasher E05 error code
- Bosch Dishwasher E06 error code
- Bosch Dishwasher E07 error code
- Bosch Dishwasher E08 error code
- Bosch Dishwasher E09 error code
- Bosch Dishwasher E13 error code
- Bosch Dishwasher E14 error code
- Bosch Dishwasher E15 error code
When to Call a Pro
Call a technician if you have cleared the filter, pump cover, and drain hose but the E24 or E25 code returns, or if the pump does not run and you have verified power at the breaker. Electrical diagnosis of the pump circuit, connector integrity, and control-board output requires a multimeter and familiarity with Bosch wiring. If the error code is not E24 or E25, note the exact code before calling because Bosch does not publish a complete fault map for the SHEM63W55N on its owner-support pages. Any repair involving the control board or internal wiring harness is best handled by a Bosch-authorized service provider to avoid voiding warranty coverage.