Is your Bosch Dishwasher Blinking red light and not starting—and you don’t know why? Don’t worry! It’s not actually a big deal. Bosch Dishwasher are one of the most used dishwasher in households. But no electrical appliance comes bug free. In the Bosch Dishwasher, the most common problem that users face is that it is not starting and flashing red light.

Your Bosch Dishwasher is not starting and flashing red light because of a faulty door latch, circuit board or spray arms. You can fix it by fixing the door latch and the circuit board.

If your Bosch Dishwasher is Not Starting Blinking Red Light, you can follow this easy DIY guide will help you quickly identify and fix the problem, giving you peace of mind knowing that your dishwasher is working properly again. You can also save hundreds of dollars by fixing blinking red light by yourself!

What Does Bosch Dishwasher Not Starting Blinking Red Light Mean?

Bosch Dishwasher are very quiet when they are running. This makes them the industry leader. You can identify that they are running by examining the red light.

If the red light on a dishwasher is blinking indicates that there is an error with the appliance. When the red light flashes on a Bosch dishwasher, it means that there is a problem with the machine and it cannot operate as normal. 

What are the possible causes Bosch Dishwasher Blinking Red Light?

Bosch Dishwasher Not Starting Flashing Red

Now that we know what does the Bosch Dishwasher flashing red light means, we need to know what causes this blinking red light issue in the dishwasher so that we can fix it.

1. Faulty Door Latch

The door latch is a mechanical component built into your Bosch dishwasher. It keeps the door in place and creates a watertight seal around it when fully engaged.

If the door latch is faulty, it will cause the dishwasher to start flashing a red light as a warning that it is dangerous to start a wash cycle due to lack of safety.

2. Faulty Circuit Board

The circuit board in a Bosch dishwasher can be faulty for a variety of reasons, such as electrical faults or damage from water or heat.

If the circuit board is faulty, it will not be able to control the various components of the dishwasher correctly, leading to a flashing red light and possibly other issues such as an inability to finish cycles or problems with power supply, water flow, and dispensers.

3. Faulty Water Supply Hose

The water supply hose in a Bosch dishwasher can become faulty due to kinks, clogs, and other obstructions. This will prevent the dishwasher from getting enough water and cause the light to flash. It may also result in poor performance or no operation at all.

4. Faulty Spray Arms

The spray arms of a Bosch dishwasher can become clogged due to small food particles, grease, or detergent residue. If the spray arms become blocked, the dishwasher will not be able to effectively clean dishes and may stop working altogether.

How to Fix Bosch Dishwasher Blinking Red Light Not Starting?

Now that we know what is causing the Bosch Dishwasher flashing red light issue, we can fix the dishwasher accordingly. Here is how you can fix your dishwasher for the blinking red problem.

1. Check for the displayed codes

If you’ve noticed a blinking red light on your Bosch dishwasher, don’t worry—there’s a simple solution. With a few steps, you can get your dishwasher running again in no time.

How to fix the Problem:

  • First, check the owner’s manual for the specific blinking code. Each code is associated with a particular issue, so identifying it will help you find the right solution.
  • Second, refer to the troubleshooting guide for your model to find the best way to fix the issue.
  • Finally, take appropriate action to fix the problem. This may involve replacing a part, resetting a button, or performing a quick cleaning.

2. Restart your dishwasher

Having a flashing red light on your Bosch dishwasher can be incredibly frustrating. To overcome from this situation you must restart your Dishwasher.

How to restart:

  • The first step is to unplug the dishwasher for 30 seconds and then plug it back in. This will reset the machine and can often fix the problem. 
  • Also if that doesn’t work, you can attempt to reset the dishwasher by pressing and holding the “Start/Reset” button for 3 seconds. 

3. Fix the latch

First and foremost, you should thoroughly check the door. If the rack is blocking the way of the door, make sure it is set properly. You will most likely resolve this issue. In the dishwasher, Bosch uses a multiple-rack system. As a result, the possibility of an obstructed rack is high.

How to fix:

Sometimes you do everything correctly, such as closing the door properly. You can, however, apply additional pressure to the door. If the red light becomes steady, it indicates that the latch is broken. As a result, you must contact Bosch for a replacement or hire a technician to do it for you.

Exploring Alternative Solutions

1. Check the water supply – If the water supply is not connected correctly, the Bosch dishwasher will not start. Make sure the water supply is connected and turned on.

2. Clear clogs and replace any parts – If there are clogs in your dishwasher, it won’t function correctly. Clear out any blockages and replace any broken parts.

3. Reset the dishwasher – Once you have checked the water supply and cleared any blockages, reset the dishwasher by pressing the ‘Reset’ button or unplugging the power cord. 

However, if you find the problem is caused by a faulty part, then you should contact Bosch for a replacement. With these simple steps, you should be able to diagnose and fix your blinking red light issue in no time.

FAQs | Bosch Dishwasher Flashing Red

1. What does a flashing red light on a Bosch dishwasher indicate?

If your Bosch dishwasher has a red light on the floor it is currently blinking and the dishwasher is not functioning, it is because you have run out of rinse aid. Fill the reservoir and the dishwasher should work.

2. Why is my dishwasher blinking and refusing to start?

This can occur if the door is opened during the cycle or if power is lost. Within 3 seconds of pressing Start/Resume, firmly close the door. If the door is not shut within three seconds, the Start/Resume light will flash, an audible tone will be heard, and the cycle will not begin.

3. What is the reason behind my dishwasher beeping three times?

It could indicate an internal leak that is causing the water to collect in the appliance’s base. An authorized service technician will be required in this situation.


At the end of the day, it’s important to remember that dishwashers are machines, and like all machines, they can malfunction or break down. If you are experiencing Bosch dishwasher blinking red not starting, don’t fret.

Simply follow the outlined steps in this article to diagnose and troubleshoot the problem. If you have further issues, it’s best to consult a professional for help. Hopefully this article provided you with the information and guidance you need to get your dishwasher up and running again.

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