Customer Questions and Answers for Turbidity Sensor (Aqua Sensor Assembly) by Bosch

This turbidity sensor detects how clear the dishwasher's wash water is so the control can adjust cycle time, rinses, and water changes. Replacing a faulty sensor helps restore proper cleaning performance and normal cycle lengths.

• Monitors soil level/clarity of the wash water
• Signals the control to extend or shorten wash and rinse phases as needed
• Helps optimize water use while maintaining cleaning results
• Failure symptoms can include unusually long or short cycles, poor cleaning, repeated draining/refilling, or cycles that won't advance

• Disconnect power and turn off the water supply before servicing
• Pull the dishwasher out as needed; access the sensor from the base area
• Place a towel to catch residual water; release the locking tab or twist-lock, unplug the connector, and install the new sensor fully seated and locked
• Restore power/water and run a test cycle; check for leaks