Bosch Dishwasher Flashing Red Light – What To Do?

As a homeowner, you may be wondering what to do when your Bosch dishwasher displays a flashing red light. Luckily, we have done the legwork for you on this issue, and here is what we found. 

The following are things you can do if your Bosch dishwasher is flashing red light:

  • Reset your dishwasher.
  • Fix the door latch.
  • Check for the displayed codes.

While Bosch dishwashers are designed with advanced features, they are susceptible to some issues. Keep reading to get detailed information about why a Bosch dishwasher might have a flashing red light and how to fix the problem.

A Bosch dishwasher displayed for sale at a store, Bosch Dishwasher Flashing Red Light - What To Do?

What Does The Red Light On A Bosch Dishwasher Mean?

If your dishwasher displays a flashing red light, it usually indicates that it is unable to finish its cycle and that there is a problem with the power supply, the water flow, or the dispenser.

The most common reasons for this problem are a faulty circuit board or a malfunctioning water inlet valve.

The flashing red light can also mean that the dishwasher door is not properly secured, which is necessary to start the wash cycle. After using the machine for some years, it may be necessary to replace a door latch sensor that is malfunctioning.

Man putting dishes in the bosch dishwasher

What Should I Do If My Bosch Dishwasher Displays A Flashing Red Light?

Dishwashers are designed to run on a certain set of instructions. LED lights are widely used to signal problems. In some cases, there might not be a problem with your dishwasher. Try the fixes below if your Bosch dishwasher is flashing a red light:

Reset Your Dishwasher 

In order to fix an issue, sometimes a simple reset or reboot is all that is needed. All you have to do is switch off the dishwasher. Then wait five minutes for the dishwasher to finish draining before turning the power back on.

Fix The Door Latch

First, make sure the door is unlocked. Don't let a rack get in the way of the door. Bosch dishwashers include a modular rack system. Therefore, the likelihood of a blocked rack is high.

You may be doing everything exactly as it should be done, such as closing the door. Still, the door can be pressed on much more forcefully.

A broken lock is indicated by constant red light. Therefore, you need either get in touch with Bosch to arrange for a replacement or hire a repairman to handle the job for you.

Check For The Displayed Codes

The meaning of different error codes is in the manual that comes with the dishwasher. The dishwasher usually displays an error code when the light comes on. To determine the problem, you have to know what the code means.

Where Is The Error Code On A Bosch Dishwasher?

An opened dishwasher

If your dishwasher finds an error in the system, it will show a message that says there is an error. The error code will appear on the display screen where the regular numbers are typically shown.

If your dishwasher gives you an error code, it is informing you of a specific problem with the appliance. Your Bosch dishwasher will give you an error code that reveals the parts that need to be replaced or checked.

How Long Does Bosch Dishwasher Last?

The average lifespan of a Bosch dishwasher is about 10 years, but with proper care, it can last as longer. As a result, a well-maintained dishwasher has an average lifespan of ten years.

This duration, however, may be shortened if the system is not maintained properly. A dishwasher's durability depends on how often it is used and how well it is maintained.

How Much Does It Cost To A Repair Bosch Dishwasher?

An opened dishwasher in the kitchen

The price for repairing a Bosch dishwasher might range anywhere from $150 to $400. It's possible that the technician will charge you anything from $50 to $80 only to diagnose the problem.

In addition, the technician might charge an hourly cost of between $100 and $250. On the other hand, if you are a frequent customer, the technician might not charge you for the diagnosis.

How Do You Clean A Bosch Dishwasher?

If you clean your Bosch dishwasher on a regular basis, it will make the system last longer. Dishwashers have the potential to become a breeding ground for mold and germs if they are not cleaned frequently. 

Here are step-by-step procedures for cleaning a dishwasher:

1. Take The Dish Racks Out Of The Cabinet

After putting on some rubber gloves, you should start by taking the upper and lower racks out of the dishwasher. By doing this, accessing the drain, the filter, and the spray arms will be easier.

2. Clean The Filter With Water

The filters for Bosch dishwashers can be removed and cleaned with a minimum of fuss. To remove the filter, turn the cap counterclockwise and then lift it up and out of its place.

The next step is to empty any food remnants or scraps into the garbage. After that, run the filter under some warm water and examine it to ensure that there are no obstructions in the mesh material.

You can also use a toothbrush to scrape out any food particles that have adhered to the filter. After you have reinserted the filter into the dishwasher, check to see that it is snapped securely into place.

3. Clean Inside The Dishwasher Tub

After you have cleaned the filter, use a microfiber or cleaning rag that has been dampened to wipe off the interior of the dishwasher. To remove any congealed food particles that may be stuck to the walls, clean with a scraper made of plastic.

4. Give The Spray Arms A Good Clean

It is possible for the spray arms to become obstructed from time to time due to the presence of small food particles, grease, or detergent residue.

One of the primary reasons why a dishwasher may become clogged is because it was overloaded with dirty dishes. In the event that the spray arms become blocked, the dishwasher will not effectively clean the dishes.

To begin cleaning the spray arms, first raise the lower arm by turning the knob on the top arm, which will expose it. Take off the arms, and look in their respective holes.

In the event that they are obstructed, the debris can be removed from them by using a toothpick.

Another option for cleaning the holes is to immerse the arms in warm soapy water for a while. After they have been cleaned, the arms should be reattached and then placed back in the dishwasher.

5. Inspect The Drain Line

It is possible for food particles to become lodged in the drain line of the dishwasher, which can cause the appliance to emit unpleasant aromas. Pliers are needed to dislodge the blockage from the drain pipe (or a screwdriver).

To begin, unscrew the drain by tightly gripping it with pliers so that you may detach it. The next step is to bring the hose inside the bathroom. To clean it in the bathtub faucet, you should run the hose beneath it.

If you have access to a wire hanger, you may simply straighten it out and slide it into the hose to break up any clogs that are particularly difficult to remove.

If you don't want the debris from the blockage to go down the drain of your bathtub, prop up a bucket against the wall of the tub and drain the other end of the hose into the bucket.

This will keep the debris from going down the drain. After the hose has been cleaned, reattach it to its original location on the drain.

What Can I Use To Clean My Bosch Dishwasher?

Modern dishwasher open, technology, kitchen.

You can use a cleaner that has been made specifically for use in dishwashers or a general-purpose cleaner. Here are some alternatives:


When it comes to cleaning the interior of your Bosch dishwasher, white vinegar is less likely to cause any damage. White vinegar can be put into a spray bottle and then used to clean the interior of the dishwasher.

If you don't have a spray bottle, you can also pour the vinegar into a plastic cup, place it on the top rack of the dishwasher, and start the cycle. This will give the same results as using a spray bottle. 

After that, you can select the thorough clean cycle on the dishwasher.


You can eliminate unpleasant smells with bleach. You can pour about a cup of bleach into the dishwasher and set it to run on a cleaning cycle.

This will eliminate unpleasant scents as well as mould and mildew. You should only do this if the model of your Bosch dishwasher has plastic parts.

Baking Soda

Baking soda is a well-known odor neutralizer, and you can use it to clean your dishwasher. You should make the baking soda into a paste by combining two tablespoons of the substance with 1/4 cup of water and then applying it using a wet cloth.

Also, you can simply sprinkle 1 1/2 cups of baking soda in your dishwasher and let it soak for four to eight hours or overnight. 

To Wrap Up

A Bosch dishwasher displayed for sale at a store

When your Bosch dishwasher's red alarm light starts flashing, all you have to do is reset your machine, check the door latch, or check for error codes. 

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