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Bosch Dishwasher Error Codes: Meanings and First Steps

Every Bosch dishwasher code on Bosch's US error-code index, with Bosch's stated meaning, the first safe step and a source link.

9GUIDES IN THIS COLLECTION

Short answer: Bosch dishwasher codes such as E24, E15 and E25 mostly point to three things: drainage (E22-E25), water supply or leaks (E14-E18), and heat-pump or electronics faults that need service (E01-E10, E19-E21). The table below gives Bosch's own meaning for every code on its US error-code index, the first safe step, and a link to the full guide where one exists.

Scope and model check

This collection follows the Bosch US dishwasher error-code support index checked 8 September 2026. It covers 23 distinct base codes listed there. Bosch says the exact code set and repair instructions depend on the dishwasher's model number (E-Nr), so treat these pages as a starting reference, not a universal code dictionary.

Start with Bosch's official dishwasher error-code index, then open the manual for the rating-plate model. Bosch's SHX4AEF5N 100 Plus product page shows where model manuals live, while the Bosch use-and-care reference confirms the E:XX display convention.

Do not remove covers, probe live wiring, bypass a door or leak safety, or work on mains, gas or water connections unless the exact manual authorizes the step and you are qualified to do it. Shut off the water and arrange service when Bosch says to do so.

All codes at a glance

Match the complete code on your display. Meanings are the manufacturer's, summarized; follow the link for the full guide where one exists.

CodeWhat the manufacturer says it meansFirst step
E01Heat-pump motor circuit fault on the main control boardReset power for 30 seconds once; book Bosch service if it returns.
E02, E03Main control board relay faultReset power for 30 seconds once; book Bosch service if it returns.
E04Faulty heater electronics found during self-testReset power for 30 seconds once; book Bosch service if it returns.
E05Wash-arm diverter circuit fault on the main control boardReset power for 30 seconds once; book Bosch service if it returns.
E06Door sensor circuit faultReset power for 30 seconds once; book Bosch service if it returns.
E07Zeolite (Crystal Dry) fan motor is defectiveBook Bosch service.
E09, E20Heat-pump internal heater faultReset power for 30 seconds once; book Bosch service if it returns.
E10Zeolite (Crystal Dry) chamber heater faultReset power for 30 seconds once; book Bosch service if it returns.
E12Limescale buildup in the heat pump; descaling neededDescale as your manual describes, then reset.
E14Flow meter failure or a problem with water filling the dishwasherCheck the water valve and inlet hose, then reset.
E15Water detected in the base; leak protection activatedTurn off the water supply and contact Bosch.
E16, E17Water not entering properly; the inlet hose may be kinked or damagedOpen the water valve fully and straighten the inlet hose.
E18Water level too low or water not pumped correctlyCheck the water supply and inlet hose.
E19Detergent dispenser solenoid circuit faultReset power for 30 seconds once; book Bosch service if it returns.
E21Heat pump is blockedClean the removable filter, reset once, then book service.
E22, E24Not draining: blocked filter, blocked or loose pump cover, kinked drain hose or clogged air gapClean the filter and check the pump cover and drain hose.
E23Drain pump blocked, clogged or faultyClean the filter and check the drain hose; book service if it repeats.
E25Drain pump blocked, or pump cover loose or missingClear the pump area under the filter and reseat the cover.
E27Household power supply too lowHave an electrician check the dishwasher circuit if it persists.

Newer Bosch displays can show longer codes with the same meanings, for example E0100 (E01), E3100 (E15), E6101 (E23) and E9240 (E22/E24). Bosch's index lists the full mapping, along with the flashing-light patterns used on models without a code display.

How to use this collection

Photograph the display, find the rating plate on the door edge, and use Bosch's manual lookup for the exact E-Nr. A reset can clear a temporary control state, but it does not prove that a heater, pump, leak or control-board fault is repaired. When a guide says to turn off the water, contact Bosch or call an electrician, follow that boundary.

Sources

Other code tables on Error Code Daily: Samsung front-load washers (WF45T6000A*), LG front-load washers (WM3400CW), LG front-load dryers (DLE3400W).

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The labels below are article titles. Match your exact device and complete code before using any instructions.

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