Bosch Dishwasher Error Code E04: Meaning and Fix
Reading the dishwasher display
A dishwasher reports its fault in the display window, or by blinking a cycle light a set number of times with a pause between groups. Count the blinks and pauses before opening the door. Bosch shows the code with a leading E and a number on both dishwashers and washers.
Bosch (part of BSH Home Appliances) uses E-numbered codes on dishwashers and washers. Its dishwashers share control platforms with Thermador and Gaggenau, so the same fault can appear on those brands. The codes apply to model numbers such as SHPM65Z55N, SHE53T55UC and WAT28400UC; check the label on your unit to confirm yours.
What causes E04
- Water collecting in the base from a leaking door gasket, hose clamp or spray-arm seal
- Aqua-stop valve or float in the base not resetting
- A float switch or leak sensor stuck or tripped by residual water
- Overfilling caused by a faulty inlet valve or too much detergent/foam
How to fix it
- Unplug the appliance and shut off the water supply before you investigate.
- Pull the unit out (or remove the toe-kick) and look for wet spots, damp insulation and drips under every hose connection.
- Tilt the dishwasher back slightly to let water in the base drain toward the pump sump.
- Soak up any water in the base pan, then wipe the float and sensor area clean so they move freely.
- Replace worn gaskets, tighten or replace hose clamps and use only the recommended amount of low-sudsing detergent.
- Restore power, run a short test cycle and dry-check the floor and pan afterwards.
Parts you may need
| Part | Part no. | Buy |
|---|---|---|
| Dishwasher Float Switch | 00165256 | Find part |
Part numbers are OEM references; confirm fit by your model number before ordering. Some links are affiliate links; we may earn a commission at no extra cost to you.
Questions
What does error E04 mean on a Bosch dishwasher?
The control sensed an abnormal fill or a water-protection condition during the cycle and shut the program down. Exact behavior can vary by model and software version; confirm against your own manual.
Can I keep using my dishwasher while E04 is showing?
No. Leave the water supply off until the leak is traced, to avoid floor and cabinet damage.
How do I clear E04, and can I fix it myself?
Cancel the program, switch the appliance off and leave it unplugged (or the breaker off) for about five minutes, then restart. The code only stays cleared if the underlying problem is fixed, so work through the steps above. Parts here involve electronics, heating or sealed components, so consider a qualified technician if the basic checks do not clear it.
Other Bosch dishwasher codes
Sources
Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.
Applies to models including SHPM65Z55N, SHE53T55UC, SHX53TL5UC, SHEM63W55N.