Bosch 00165256 Dishwasher Float Switch (3-Terminal)

Dishwasher Float Switch – Bosch

The dishwasher float switch is a 3-terminal microswitch activated by the float mechanism in the base of the dishwasher tub. When rising water lifts the float to the overflow level, the switch signals the control board to stop filling and protect the dishwasher from leaks or flooding. When the float switch fails, the dishwasher may overfill, fail to fill at all, or display an overflow or anti-flood error code. This direct-replacement float switch restores accurate water-level detection and overflow protection.

Compatible Part Numbers

• 00165256
• 165256
• AP2802373
• PS3439096
• PS8697040
• AH3439096
• EA3439096
• 935359
• B00IRH0DTG

Key Features

• Direct OEM-spec replacement – 3-terminal microswitch engineered to Bosch factory specifications for correct fit and switching characteristics
• Restores overflow protection – signals the control board to stop filling when the float reaches the overflow level
• Prevents tub overfilling and water damage – accurate float-actuated switching keeps water level within safe limits
• Direct connector replacement – plugs into the existing wiring harness without modification

Fixes These Symptoms

• Dishwasher overfilling or water leaking from the base during the fill cycle
• Dishwasher not filling at all due to a failed float switch holding the fill circuit open
• Overflow or anti-flood error code displayed on the control panel
• Float moves freely but the dishwasher does not respond to a high-water condition

Compatible Brands

• Bosch, Thermador, Gaggenau

Always verify your model number before ordering. Check the label inside the dishwasher door to confirm compatibility.