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How to fix Bosch dishwasher error code E15?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The Bosch dishwasher error code E15 is a water heating error. This error code is displayed when the dishwasher is not able to heat the water to the correct temperature. This can happen for a number of reasons, such as a faulty heating element, a problem with the water supply, or a blockage in the dishwasher drain. If you see this error code, it is important to check the water supply and heating element to ensure they are working properly. If the problem persists, it is recommended to call a Bosch dishwasher repair technician.

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1. Check the water inlet hose to ensure it is not kinked or clogged

  1. Open the dishwasher’s front door and check that the water inlet hose is not kinked or clogged. If it is, unkink or remove the hose from the water inlet and try to reconnect it.
  2. Check the dishwasher’s water inlet valve to make sure it is not closed or stuck. If it is, open it using a screwdriver.
  3. Check the dishwasher’s water inlet hose for any signs of dirt, debris, or corrosion. If there is, clean the hose using a hose cleaner and water.
  4. Check the dishwasher's water inlet valve for any signs of damage. If there is, replace the valve.

2. Check the water inlet valve to ensure it is not clogged or damaged

  1. Turn off the power to the dishwasher.
  2. Open the dishwasher door and check the water inlet valve for obstructions. If there are any obstructions, clear them away using a sharp object.
  3. Close the dishwasher door and turn on the power to the dishwasher.
  4. Check the water level in the dishwasher tub. If the water level is low, refill the dishwasher tub using water from a faucet.
  5. Check the water inlet valve for obstructions. If there are any obstructions, clear them away using a sharp object.
  6. Check the water level in the dishwasher tub. If the water level is low, refill the dishwasher tub using water from a faucet.
  7. Check the dishwasher for any signs of damage. If there are any signs of damage, replace the dishwasher water inlet valve.

3. Check the drain hose to ensure it is not kinked or clogged

  1. Remove the dishwasher door by pulling down on the handles.
  2. Locate the drain hose on the side of the dishwasher.
  3. Inspect the drain hose for any kinks or obstructions.
  4. If the drain hose is clogged or kinked, use a plunger to clear the obstruction.
  5. Replace the drain hose if necessary.

If the answers above didn't work then you should also try:

  1. Check the drain pump to ensure it is not clogged or damaged.
  2. Check the control panel to ensure it is not damaged.
  3. Check the wiring to ensure it is not damaged.
  4. Replace the water inlet hose if it is damaged.
  5. Replace the water inlet valve if it is damaged.
  6. Replace the drain hose if it is damaged.
  7. Replace the drain pump if it is damaged.
  8. Replace the control panel if it is damaged.
  9. Replace the wiring if it is damaged.