Dishwasher Overfilling or Showing E15? Float Assembly 00751391 – Fix Flood Protection Fast
If your Bosch dishwasher is overfilling, triggering an E15 flood error, or refusing to start a wash cycle, the float assembly is the most common cause. In most Bosch dishwashers, this is caused by a failed float housing assembly with microswitch. When it fails, the control board loses its water-level signal — triggering flood protection lockout, overfill events, or a machine that won't fill at all. ⚡ Common failure point in Bosch-built dishwashers. Part 00751391 is the genuine OEM replacement that restores accurate water-level sensing and clears flood protection faults immediately.
❓ Is This the Right Part?
This is the correct fix if ALL of the following are true:
- ✔ Dishwasher powers on and control panel responds normally
- ✔ Drain pump and spray arms function correctly
- ✔ Water supply confirmed — shutoff valve open, inlet hose clear
- ✔ ONLY problem is overfilling, E15 error, or float switch not clicking when lifted
Not sure? Send us your model number — we'll confirm before you order.
🔧 Common Symptoms
- Dishwasher overfilling with water during wash cycle
- E15 flood protection error code displayed — machine locked out
- Dishwasher won't start or fill cycle stops prematurely
- Water leaking into base pan, triggering flood sensor
- Float stuck in raised position — microswitch not releasing
- No audible click from float switch when float is lifted manually
✔ If these symptoms match, this is the most likely failed component in the system.
✔ In most cases, replacing this float assembly restores normal operation immediately.
📦 Part Details
- Part Number: 00751391
- Type: Float Housing Assembly with Integrated Microswitch — complete assembly, no soldering required
- Replaces: 00751391, 751391
- Brands: Bosch, Siemens, Thermador, Gaggenau
If your base pan had standing water when E15 triggered, inspect the flood sensor / Aquastop hose assembly as well. A saturated sensor can continue triggering E15 even after the float is replaced. Dry the base pan thoroughly and reset the machine before assuming the float was the only fault.
⚙️ Installation
Skill Level: Easy — 20 to 35 minutes. Disconnect power before servicing. Remove the lower rack, unscrew the lower spray arm, and lift out the filter basket to access the float assembly in the front-left corner of the tub floor. Disconnect the wiring harness, unclip the old float housing, and snap in the new assembly. Reconnect the harness, reassemble, and run a short cycle to confirm the E15 clears.
✓ Compatible Models
Confirmed compatible with SHE3AR72UC, SHE55M15UC, SHE65T55UC, SHX5ER55UC, SHPM88Z75N, DWHD650WFP, SN26T592GB, DF211161 plus additional Bosch, Siemens, Thermador, and Gaggenau models. Contact us to verify your model number before ordering.
💡 Pro Tip
Before condemning the float assembly, unplug the microswitch connector and test continuity with a multimeter while manually lifting the float. You should hear a click and see continuity change state. If the switch tests good but E15 persists, the fault is likely a wet base pan or a failing Aquastop sensor — not the float. Replacing a good float won't clear a sensor-triggered E15.
✓ Model-Specific Repair Pages
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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