9 Easy Tips to Fix a Bosch Dishwasher Not Starting

The Bosch dishwasher is one of the most popular brands within the dishwasher industry.

It is very convenient to use because of its automatic features that clean and rinse dishes and keep the food safe and fresh while also rinsing dishes clean.

The common reasons your Bosch dishwasher won’t start include a tripped circuit breaker, faulty door latch, defective control board, or a malfunctioning thermal fuse.

So, we have compiled a list of the most common reasons for a Bosch dishwasher not starting so you know what to do if you have this problem.

Bosch Dishwasher Not Starting

Bosch Dishwasher Not Starting? Follow these Troubleshooting Steps

To help you with the repair, we will discuss each issue in detail, with easy troubleshooting tips.

1. The Power is Not Turned On:

The power switch must be turned on to make sure that the electricity is connected to the circuit and the Bosch dishwasher is actually receiving it.

A faulty fuse or the power cord can cause the Bosch dishwasher to malfunction.

To determine whether this is the case, check if the power is working by checking if the light on the power cord turns on.

If this is the problem, replace the fuse. If the power cord is loose, it may need to be tightened.

2. Defective Door Latch:

If the door latch on the Bosch dishwasher is not working properly, the door may not open when the power is turned on. It may also get stuck closed, preventing the Bosch dishwasher from starting.

If this is the problem, turn the power off and then try again. You may need to remove the latch and replace it with a new one to fix it.

Signs of a defective dishwasher door latch are defective or missing parts. If you see any of these signs, you should replace the door latch with a new part.

  • The door latch is missing or damaged.
  • The handle on the door is broken.
  • The door can not close all the way.
  • The door does not lock.
Bosch Dishwasher won't start

3. Improper Water Supply:

The water supply for the Bosch dishwasher can be connected to a hose or a faucet.

If the water source is not clean, there could be problems with the dishwasher starting.

If the water is dirty, you may need to wash it and let it run for at least 5 minutes before turning the power on to start the Bosch dishwasher.

Check the water level in the dishwasher to see if it needs more. If this is the problem, change the faucet valve to ensure enough water flows through the system.

If the dishwasher still does not start, then there may be a problem with the hose connecting the dishwasher to the faucet.

Signs of a low water supply include Water leaks, clogged lines, broken hose/pipe, or low water pressure.

4. Issue With Dishwasher Cycle Settings:

Dishwashers are made up of many parts, including timers and motors, which are designed to complete a specific cycle.

However, over time, these components can fail or become damaged and, therefore, cause issues with the dishwasher’s settings.

The dishwasher cycle settings may need to be reset to ensure that the Bosch dishwasher starts working correctly.

Reset the dishwasher’s cycle to the factory settings by pressing and holding the button on the back of the machine for approximately 10 seconds.

This problem can also result in the Bosch dishwasher not drying dishes properly.

5. Faulty Thermal Fuse:

A thermal fuse is a fuse that is placed in the dishwasher circuit to protect the electrical components of the Bosch dishwasher.

This is a safety feature that ensures that the dishwasher is not damaged if there is an overheating issue in the Bosch dishwasher. If the thermal fuse is not working, the dishwasher will stop functioning.

You must first remove the dishwasher’s rear panel to replace the thermal fuse. The thermal fuse and the body of the dishwasher will be accessible as a result.

The Bosch dishwasher’s thermal fuse may be broken, worn out, or defective.

If the thermal fuse is burnt or damaged, replace it.

6. Malfunctioning control board:

The control board on the Bosch dishwasher is used to control the settings and functions of the dishwasher.

A malfunctioning control board could cause problems with the Bosch dishwasher’s operation.

Check the Bosch dishwasher’s control board by pressing the button on the back of the machine.

If you see a warning light flashing or a fault code, then you should call an authorized service provider.

7. Defective Timer:

The timer on the dishwasher can be a replacement part that must be replaced if the Bosch dishwasher does not start.

Apart from starting, it can also create the Bosch dishwasher not draining issue.

Check the Bosch dishwasher’s timer for any damage and replace it if necessary. If the timer is defective, you will need to replace it to ensure that the Bosch dishwasher starts functioning properly.

Fixing Bosch dishwasher not starting

8. The Circuit Breaker is Tripped:

When the circuit breaker is tripped, the dishwasher will not start. You’ll need to replace the circuit breaker to fix this.

A faulty circuit breaker can be caused by a broken wire or a bad connection, so first check for these. A blown fuse might potentially cause this problem.

You can replace the fuse or replace the circuit breaker, depending on which part of the circuit is faulty.

9. Faulty Relay: 

The relay is a component that is inside the dishwasher. It is responsible for connecting and disconnecting the power to the circuit.

If the relay is faulty, it will not allow the electricity to flow. To fix this issue, check the relay and replace it if it is faulty.


The first thing to check if your Bosch dishwasher not starting is the water connection.

It can be easily tested by turning off the power, plugging it into an outlet, and checking if the water comes from the sink faucet.

If the water does not come out, you might need to open up the dishwasher’s drain valve and ensure the drain hose is in good condition.

Also, if there is a smell coming from the dishwasher, you can try to clean up any clogs or debris that may have accumulated in the drain.

Once this has been done, it is time to check the fuse box for blown fuses. If this is the case, then the only thing left to do is replace the fuse.

Once you have checked and repaired these things, your dishwasher should be working like new again!

Check out the following troubleshooting blogs if you have a different brand:

Steven Settles Author

Steven Settles is an ISCET-certified master in appliance repair. He has aced the National Appliance Service Technician Certification Exam, showcasing his exceptional diagnostic and repair skills. With an in-depth understanding of the latest repair technologies and a keen eye on evolving industry standards, Steven is a go-to expert for any appliance issue.

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