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Bosch Dishwasher spray arms not spinning

If your Bosch dishwasher spray arms are not spinning, the wash water is not being routed where it needs to go, so you may notice a Bosch dishwasher spray arm not turning, poor wash performance, or dishes still dirty after the cycle. On this Bosch symptom page, the most likely causes start with the control board and main control board, which can fail to power the water inlet valve and leave the tub without enough water pressure to spin the wash arm. After that, check the timer, though timers are often misdiagnosed. The more common mechanical causes are damaged or obstructed center wash arm support, lower wash arm support, or upper wash arm support. If one of these supports is cracked, clogged, or not lining up with the water supply nozzle, the dishwasher spray arms not spinning problem makes sense fast. Inspect the spray arm and wash arm supports for blockage, wear, and proper fit before replacing parts. Enter your model number on RepairClinic.com to find the exact Bosch replacement part that fits your specific dishwasher.

01 - Bosch Dishwasher Control Board

A dishwasher's control board provides power to nearly every electrical component in the dishwasher. A faulty board may be unable to supply power to the water inlet valve, preventing it from opening and allowing the necessary water to fill the tank.

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02 - Bosch Dishwasher Main Control Board

A dishwasher's main control board provides power to nearly every electrical component in the dishwasher. A faulty board may be unable to supply power to the water inlet valve, preventing it from opening and allowing the necessary water to fill the tank.

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03 - Bosch Dishwasher Timer

The timer allows power to flow to the proper parts at the proper times. If the timer isn’t working properly, it might not send voltage to the dishwasher, causing it not to start. Timers are often misdiagnosed—make sure you check more commonly defective parts before replacing the timer.

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04 - Bosch Dishwasher Center Wash Arm Support

The center wash arm is attached to a support that is normally attached to the underside of the upper dishrack. Water flows through the support to the arm which circulates the water to the dishes in the upper rack. If the support is damaged or obstructed water may not flow properly. Inspect the support for any damage or obstruction and replace if necessary. In addition, make sure that the support is mating properly with the water supply nozzle.

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05 - Bosch Dishwasher Lower Wash Arm Support

The lower wash arm is attached to a support fastened to the sump assembly. Water flows through the support to the arm which circulates the water to the dishes in the lower dishrack. If the support is damaged or obstructed water may not flow properly. Inspect the support for any damage or obstruction and replace if necessary.

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06 - Bosch Dishwasher Upper Wash Arm Support

The upper wash arm is attached to a support that provides water to the arm to spray the dishes in the upper dishrack. If the support is damaged or obstructed water may not flow properly. Inspect the support for any damage or obstruction and replace if necessary.

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Frequently Asked Questions

Why are the spray arms not spinning on my Bosch dishwasher?

Can a Bosch dishwasher spray arm not turning be caused by low water fill?

My Bosch dishwasher is not cleaning dishes. Could the spray arms be the reason?

Should I replace the control board if my Bosch dishwasher spray arms are not spinning?

How do I find the right Bosch dishwasher spray arm or support part for my model?

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