Another entry in the SHP65D pocket-handle line, the SHP65DP5N is a 500 Series dishwasher with a 44 dBA rating, spread over three racks for 16 place settings. AutoAir dries the load, AquaStop guards against leaks, and Home Connect supplies the app. Its notable trait is PrecisionWash soil sensing, which is where this tier earns its keep.
The sensor judges how dirty the rinse water is while the cycle runs, and extends or trims the program accordingly. It sits in the circulation path, exposed to everything the machine pumps around, so a sensor lens that fogs or films over makes every cycle run to its limit. It is among the rare problems that make a Bosch run longer instead of stopping.
Others we see are an AutoAir latch that sticks in a damp climate, and detergent left in the dispenser when the machine is supplied with cold water only. The sensor is where we start.
It will run, but programs lengthen because the machine must do all the warming on its own, and detergent made for warm water may be left in the dispenser. Bosch's installation guidance is the reference.
The likelier culprit is the soil sensor, which may be seeing murky water that is not really there. Servicing that sensor is a smaller job than touching the heating circuit.
It measures how dirty the water is while the cycle runs, then lengthens or shortens the program to suit. That is why a clouded lens makes every cycle long.
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