Bosch Dishwasher Won’t Start? (Step-by-Step Guide for ALL Error Codes)

In this article, we’ll explore some common reasons why your Bosch dishwasher won’t start and provide suggestions for troubleshooting and fixing the issue.

One issue that might be stopping your Bosch dishwasher from starting is a problem with the power supply. Ensure your dishwasher is plugged in and receiving electricity from the wall outlet. Check your home’s circuit breaker or fuse box for signs of a blown fuse or tripped breaker. If everything seems fine but your dishwasher still doesn’t start, its internal power components, such as the thermal fuse or control panel, might be malfunctioning. A multimeter can be used to test the continuity of the thermal fuse.

Another potential reason for your Bosch dishwasher not starting is an issue with the water supply. Ensure that the water valve is turned on and that the dishwasher is connected to your home’s water supply properly. If the dishwasher has power but doesn’t start running or filling with water, a water supply issue is likely the cause.

In the following sections, we’ll delve further into these topics and discuss additional troubleshooting tips to help you get your dishwasher back up and running.

Topics we Cover

My Bosch Dishwasher Won’t Start and Has No Power

If you’re facing the issue of your Bosch dishwasher not starting and having no power, there could be a few potential causes. Let’s go through them one by one, so you can identify and resolve the problem.

Firstly, check the power supply. Ensure that your dishwasher is properly plugged into a functioning electrical outlet. If you’re unsure whether the outlet is working, try plugging in another appliance like a lamp or phone charger to confirm that it is receiving power.

Examine the dishwasher’s door. The appliance won’t start if the door is not properly closed or if the latch is faulty. Confirm that the door is fully shut and latched. If the door still won’t close or latch, it may need to be adjusted or have a damaged latch replaced.

Another possible issue is with the water supply. If your Bosch dishwasher has power but is not starting or filling with water, ensure the dishwasher’s connection to your home water supply is secure and that the water supply is turned on. You can find this information in one of the search results I provided earlier.

If you’ve checked these common factors and your dishwasher still isn’t starting, it could be due to a defective timer or malfunctioning control board. These components are responsible for providing power to different parts of the dishwasher. A defective timer or control board will need to be replaced by a professional repair person.

Bosch dishwasher error code E12 – Limescale build up

E12 error code on your Bosch dishwasher indicates that there is a build-up of limescale in the heating system. This issue arises mainly when dishwashers are used frequently with hard water, leading to limescale accumulation.

This buildup can prevent your dishwasher from starting and may cause damage to the heating system if not addressed properly. Below you will find simple step-by-step instructions to resolve the error code E12 and avoid further issues.

Step 1: Purchase a descaler

To fix the issue, you will need to purchase a descaler specifically designed for dishwashers, like the Bosch descaler. You can also use other standard descaling products for dishwashers available in the market.

Step 2: Empty the dishwasher

Before you start descaling your dishwasher, it is crucial to empty it completely. Make sure there is no crockery, cutlery, or any other items inside the appliance.

Step 3: Follow the descaler’s instructions

Read the instructions on the descaler product you purchased and follow them carefully to ensure effective limescale removal.

Typically, these products require you to pour the descaling solution into the dishwasher’s detergent dispenser, but always rely on the manufacturer’s specific directions.

Step 4: Run the dishwasher

After adding the descaler, run the dishwasher on a hot wash cycle without any dishes or utensils inside. This process helps break down and remove the limescale buildup within the heating system.

Step 5: Regular maintenance

To prevent the E12 error code in the future and keep your dishwasher functioning efficiently, it is essential to descale the appliance regularly, especially in hard water areas. Make sure you follow the manufacturer’s recommendations for descaling frequency to avoid excessive limescale build-up.

Bosch dishwasher error code E14 – Flow meter failure

The Bosch dishwasher error code E14 occurs when there is a flow meter failure or an issue with the water flowing into the dishwasher or the filling system. This malfunction could be due to a faulty flow sensor, which controls the amount of water collected in the tank, or problems with the wiring connected to the sensor.

Here is a simple step-by-step guide to help you fix the Bosch dishwasher error code E14:

Step 1: Check the water supply

Ensure that there is no issue with the inlet water supply to the dishwasher, such as a closed or partially open valve. Open the valve, if necessary, to let the water flow freely into the dishwasher.

Step 2: Inspect the flow sensor

Unplug the dishwasher and locate the flow sensor, usually found in the bottom part of the appliance. Make sure it is clean and free of debris or damage. If the flow sensor appears damaged, you may need to replace it.

Step 3: Examine the wiring

Check the wiring connected to the flow sensor for any signs of damage or disconnection. Loose or damaged wiring may cause the E14 error code. Repair or replace any damaged wiring to ensure proper functioning.

Step 4: Reset the dishwasher

After performing the necessary checks and repairs, plug the dishwasher back in and perform a test cycle to see if the E14 error code has been resolved. If the problem persists, it may be best to contact Bosch Customer Support at 1-800-944-2904 for further assistance.

By following these steps, you can address the E14 flow meter failure error code, ensuring smooth and efficient operation of your Bosch dishwasher. Remember, always unplug the dishwasher before performing any repairs or maintenance tasks to ensure safety.

Bosch dishwasher error code E15 – Water in the base trough

E15 error code on your Bosch dishwasher indicates that there is water in the base of the dishwasher. This issue occurs when the safety switch detects water in the base and subsequently activates the leakage protection system. It is often caused by a leak, which could be in the sump basin, water tank, or hoses.

One potential solution is to perform a hard reset of the dishwasher. To do this, you should:

  1. Turn off the water inflow
  2. Disconnect the power to the dishwasher for about five minutes
  3. Reconnect the power and check if the error code has cleared

If the error code persists after the hard reset, there might be a different underlying issue:

  • Faulty drain hose: Inspect the drain hose for any damages or loose connections. Replace it if necessary.
  • Blocked drainage system: Check the drainage system for any blockages and remove any debris.
  • Malfunctioning pressure switch: If the pressure switch is not functioning correctly, it may need replacement.
  • Blocked flow meter: The flow meter can also get clogged. Clean it if necessary.

After addressing the potential causes, test your dishwasher again to verify if the E15 error code has been resolved. If the issue persists, it is recommended that you contact Bosch Customer Support at 1-800-944-2904 for further assistance.

Always remember that a friendly and timely approach to addressing dishwasher issues can lead to a quick resolution and an error-free appliance.

Bosch dishwasher error code E16 & E17 – Water filling the system

E16 and E17 error codes on a Bosch dishwasher indicate that there’s an issue with water flowing into the dishwasher or the filling system. In such situations, the water may not be entering the dishwasher properly, leading to these error codes. Let’s go through some simple steps to troubleshoot and resolve these issues.

Step 1: Check the inlet hose

Ensure that the inlet hose isn’t kinked or damaged, as this could restrict water flow into the dishwasher. Make sure that the connections are properly tightened and that there are no visible signs of wear or tear.

Step 2: Inspect the outlet hoses

Just like the inlet hose, the outlet hoses could also have problems that might lead to these error codes. Check for any blockages, kinks, or damage that could be affecting the water flow. If necessary, replace the hoses.

Step 3: Clean the dishwasher filter

The filter located at the bottom of the dishwasher tub may have accumulated debris or obstructions over time. To ensure smooth water flow, remove the filter, clean it thoroughly, and then reinstall it.

Step 4: Examine the drain hose and pump

If the drain hose or pump is obstructed, it can lead to a drainage issue which may trigger the E17 error code. Check the drain hose for blockages or kinks and clean it if necessary. Confirm if the draining pump is blocked or damaged and replace it if needed.

Step 5: Inspect the fill valve

The E16 error code might indicate that the intake valve has malfunctioned, preventing the dishwasher from controlling the water flow into the tank. Check the fill valve for any clogs, and clean it as needed.

By carefully following these steps, you should be able to identify and fix the issue causing the E16 or E17 error codes on your Bosch dishwasher. Once resolved, your dishwasher should start running normally again, ensuring you have a fully functional appliance for efficient dishwashing.

Bosch dishwasher error code E18 – Water flow into the dishwasher

Error code E18 on a Bosch dishwasher indicates an issue with the water flow into the appliance. This can occur when the water level is too low, or the water is not being pumped correctly. There are some common reasons for this issue and brief step-by-step instructions to help you troubleshoot and fix the problem.

Step 1: Check the inlet hose

First, check the inlet hose connected to the dishwasher. Ensure that it is not kinked, damaged, or obstructed, which could prevent the water from flowing into the dishwasher. If you find any issues, straighten the hose or replace it if necessary.

Step 2: Check the water supply

Next, make sure the water supply is turned on and functioning properly. The water flow rate should be at least 10 liters per minute. If the water supply is not providing sufficient water flow, the dishwasher may not fill up properly and will trigger the E18 error code.

Step 3: Clean the filter

Another aspect to inspect is the filters in the water supply hose. To clean these filters, follow these steps:

  1. Turn the water supply off.
  2. Disconnect the hose from the tap.
  3. Use a small brush to clean the filters thoroughly.
  4. If your appliance does not have an AquaStop, also remove the hose from the back of the dishwasher and clean the filter with pliers.
  5. Reconnect the hose, ensuring there are no leaks.

Step 4: Check the outlet hose

Additionally, make sure the outlet hose is not blocked or kinked. If needed, remove any debris or obstructions and reposition the hose to ensure proper drainage.

By addressing these common issues and following the instructions outlined, you can resolve the E18 error code on your Bosch dishwasher and get your appliance up and running again.

Bosch dishwasher error code E22 – Filter is blocked

An E22 error code on your Bosch dishwasher indicates that the filter is blocked. This can cause your dishwasher to not start as the water cannot drain properly due to the blockage.

The filter is designed to catch food particles, and it requires regular cleaning to avoid issues like the E22 error code. Don’t worry, as fixing this issue is simple by following the steps below:

Step 1: Turn off the dishwasher

To avoid any accidents or damage, ensure that your dishwasher is turned off and disconnected from the electrical supply before you begin cleaning the filter.

Step 2: Locate the filter

Open your dishwasher door, and you’ll find the filter typically at the bottom in the center of the dishwasher tub.

Step 3: Remove the filter

To remove the filter, twist its top, which keeps it locked in place. If you’re unsure how to do this for your specific dishwasher model, refer to your user manual for further details.

Step 4: Clean the filter

Rinse any large, solid debris from the filter and dispose of it in the trash bin. Use warm water and a soft brush to gently clean the filter, ensuring that any remaining debris is removed.

Step 5: Reinstall the filter

Once the filter is clean, place it back into the dishwasher and twist the top to lock it in place.

Step 6: Check the drain hose

Occasionally, the E22 error code can be caused by a blocked drain hose. Check the hose for any kinks or obstructions, and ensure that it’s properly connected.

With the filter cleaned and reinstalled, your Bosch dishwasher should be ready to start and function properly without displaying the E22 error code. Regularly cleaning the filter can prevent future instances of this error and help keep your dishwasher running smoothly.

Bosch dishwasher error code E23 – Issue with drain pump

An E23 error code on your Bosch dishwasher indicates that there’s an issue with the drain pump. This error generally occurs when the drain pump is blocked, clogged, or faulty. In this section, we will discuss the possible causes of this error and provide some simple steps to fix it.

Step 1: Inspect the drain hose

First, inspect the drain hose of your dishwasher. It is usually connected to the sink’s drain or garbage disposal unit. Ensure the drain hose is not kinked, bent, or damaged. If the hose has any kinks, gently straighten them and check for any visible leaks.

Step 2: Check for clogs in the drain system

Next, examine your dishwasher for any clogs. Food debris and other particles can sometimes accumulate and block the dishwasher’s drain system.

To check for clogs, you may need to remove the filter and drain pump cover located at the bottom of the dishwasher. If you find any debris, remove it, and clean the area thoroughly.

Step 3: Reset the dishwasher

If your drain hose and dishwasher are free of clogs, you might need to reset your Bosch dishwasher. Press and hold the start button (or “cancel” on older Bosch models) for about 3 to 5 seconds.

On some models, you may need to press the power button to turn the unit back on after resetting. This might clear the error code and resolve the issue.

Step 4: Check the drain pump

Lastly, if you still have the E23 error code after trying these troubleshooting steps, the drain pump might be faulty and needs to be replaced. In this case, you should contact Bosch Customer Support at 1-800-944-2904 for further assistance or consult with a professional appliance technician.

Bosch dishwasher error code E24 – Dishwasher not draining

The Bosch dishwasher error code E24 indicates that your dishwasher is not draining properly. This error is commonly caused by a blockage in the drain filter, but other factors such as a kinked hose, a loose pump cover, or a clogged drain hose can also lead to this error code.

Step 1: Check the drain filter

First, check the drain filter, as this is the most common cause of the E24 error code. To do this, you need to:

  1. Turn off the dishwasher and unplug it from the power source.
  2. Remove the bottom rack of the dishwasher.
  3. Locate the filter at the bottom of the dishwasher – it should be a circular mesh filter.
  4. Twist the filter counterclockwise and lift it out to clean it under running water.
  5. After cleaning the filter, reinsert it and twist clockwise to secure it in place.

Step 2: Check the Inlet hose

Make sure the inlet hose is not kinked or damaged. A kinked hose can prevent water from draining correctly.

Step 3: Check the Pump cover

The pump cover is located at the bottom of the dishwasher underneath the filter. Ensure it is tight and secure to prevent any leaks.

Step 4: Check the Drain hose

Inspect the drain hose for clogs or damage. If necessary, remove the hose and clean it, or replace it if it is damaged.

Step 5: Check the Air gap

If your dishwasher is connected to an air gap, check for any clogs or obstructions there as well.

Step 6: Check the Garbage disposal plug

If you have a garbage disposal, ensure that the plug has been removed from the dishwasher drain connection.

By addressing these various causes, your Bosch dishwasher should begin to function properly again, and the E24 error should be resolved.

Bosch dishwasher error code E25 – Drain pump blocked, drain issue, filter clogged or pump impeller is jammed

Friendly reminder, the Bosch dishwasher error code E25 occurs when the drain pump is blocked, the drain hose has an issue, the filter is clogged, or the pump impeller is jammed.

A functioning dishwasher is a key component in any kitchen, so when you encounter the E25 error, follow these simple steps to resolve the issue:

Step 1: Turn off your dishwasher

Unplug your dishwasher or switch off the circuit breaker before attempting any maintenance to avoid safety hazards.

Step 2: Remove the filter

In the bottom of your dishwasher, you will find the filter, which needs to be removed to access the drain pump cover. Twist the filter counter-clockwise and lift it out.

Step 3: Check the drain pump cover

Ensure that the pump cover, located underneath the removed filter, is properly seated and not loose. If it is loose, carefully tighten it.

Step 4: Inspect for blockage

Look for any visible signs of blockage or debris stuck in the pump cover. Remove any blockage you find using a small brush or pliers, and ensure the area is clean.

Step 5: Clean the filter

Rinse the filter with water to clear any trapped debris. If it’s heavily clogged, consider replacing it with a new one.

Step 6: Inspect the drain hose

Disconnect the drain hose from the dishwasher and inspect it for any blockages or kinks. Remove any blockage or straighten out any kinks, and then reconnect the hose.

Step 7: Reassemble and test

Replace the cleaned filter and switch your dishwasher back on. Run a short cycle to test if the error code has been resolved.

By following these steps, you should be able to resolve the E25 error code and enjoy a fully functioning Bosch dishwasher once more. Regular maintenance, such as cleaning the filter and checking for blockages, can help prevent this error from occurring again in the future.

The Most Common Problems with Bosch Dishwashers

Checking Power Supply Issues

First, ensure your dishwasher is properly plugged in and that the circuit breaker has not tripped. If you still have no power, check the power outlet with another appliance to confirm it’s working.

Inspection of Door and Latch

A common issue preventing a Bosch dishwasher from starting is a faulty door latch. Ensure the door is closed and latched securely. If the latch is damaged, you should replace it.

Control Panel Problems

Sometimes the control panel can malfunction. In this case, you may need to reset the dishwasher. To do this, unplug the appliance, wait a few minutes, and then plug it back in. If the problem persists, the control panel might need replacement.

Identifying Timer and Control Board Issues

If your dishwasher still won’t start, it might be due to a broken timer or control board. Inspect the control board for any visible damage or burned areas. If you find issues, replacing the control board is necessary.

Water Supply and Drain Pump Concerns

Check the water supply valve and ensure it is open. A blocked or malfunctioning drain pump could also lead to standing water in the dishwasher. If there’s a leak, inspect the hoses and connections to find and fix the issue.

Child Lock and Other Features

Make sure the child lock feature is not engaged, as this would prevent the dishwasher from starting. Check your owner’s manual for information about disabling the child lock.

Referencing the Owner’s Manual and When to Seek Professional Service

If troubleshooting doesn’t resolve the issue, consult your Bosch dishwasher’s owner’s manual for additional guidance. If all else fails, it’s time to call a professional service technician to diagnose and repair the problem.

The Most Common Bosch Dishwasher Models

Bosch dishwashers are a popular choice for many households due to their high-quality performance and sleek design. In this section, we will look at some of the most common Bosch dishwasher models and how they might experience issues with starting up.

Bosch 300 Series: This series of Bosch dishwashers is known for its quiet operation and flexible loading options. It has multiple wash cycles and options to choose from. However, if your Bosch 300 series dishwasher isn’t starting, you might need to check the door switch or the wire harness for any issues.

Bosch 500 Series: The 500 Series offers even more advanced features, such as a flexible third rack and improved drying technology. This model comes with a variety of wash cycles, making it a popular choice for many households. But if your Bosch 500 series dishwasher is not starting, you should first inspect the door seal for debris. Additionally, verify that the electrical plug is still connected and the outlet hasn’t tripped.

Bosch 800 Series: This premium series of Bosch dishwashers boasts ultra-quiet operation, advanced drying technology, and spacious, flexible loading capacity. With multiple wash options and a luxurious design, this series offers a top-of-the-line experience. If your Bosch 800 series dishwasher refuses to start, try resetting the GFCI outlet or checking for any loose connections in the wire harness.

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