Bosch SMS Series Dishwasher Fault Codes (2023)

Bosch SMS Series Dishwasher Fault Codes (1)These are the most common fault or error codes used in what we refer to as Bosch SMS dishwasher and most of them use the same fault or error codes when they have a problem or a spare part fails. These codes are used on dishwashers from around about 2005-2010 to the best of our knowledge.

These fault codes for Bosch dishwasher SMS Range models will displayed as a digital code, exactly as you will see below, in an LED or LCD panel or display on the front of the dishwasher.

Before you start any investigation of the fault or even remove the lid of your Bosch dishwasher please read and fully understand this article in full and pay particular attention to the safety and information notices at the bottom of this page as they contain extremely important information!

Please remember to support our site by buying Bosch dishwasher spares from our spare part storeand, if you decide that you really need a dishwasher engineer please support the local dishwasher repairers that help make this site possible, you can look for a local Bosch dishwasher repairer using our engineer search.

Bosch SMS Series Dishwasher Fault Codes

Like other fault codes these written for dishwasher repairers and not for the general public by Bosch and they assume a certain level of competence on the part of the user in diagnostic routines. We have added some notes to try to assist you in determining the nature of the fault you have but, you will still need to investigate each failure on its own merits. For more help and advice on fault finding on a dishwasher please refer to our dishwasher fault finding guide from this link before you begin.

Information around the faults on these dishwashers is pretty sketchy at best as Bosch have gotten more and more protective over other people having access to any information, including their fault codes.

Please check that any Bosch dishwasher spares recommended are suitable for use on your particular model and production code or serial number. If you are unsure about the suitability of any spare part please ask to ensure that you get the correct spares for your Bosch dishwasher. Please, don't guess or assume as spares can be altered on a production run with the same model number having several different alternative components used.


Power module failure!

All codes E01, E02, E03, E04 and E05 all indicate a power module failure.

This is not a fault that can be repaired by the owner as the modules have to be configured in order to operate, please see the information notes below.

As far as we are aware many models of Bosch either are or, will be set up this way in order to eliminate the possibility of DIY or third party repairs to these appliances.


Door switch fault

This fault code will usually do what it says and be telling you that the door switch, the one used to tell if the door is closed and the lock engaged, is faulty. However, this series of Bosch dishwashers also do get the handles broken from time to time and this could be a cause, you can find a commonly used door handle here.


Dryer fan faulty

Essentially this error code states that the dryer fan, used for fan drying in some models, is faulty or not operating for some reason.


Heat pump has detected too low a water level in the tub

By heat pump we assume the water heating element as that's al that makes sense. Assume that a new heating element will not be a cheap item to buy and they are pretty specific to production within the series and it is better to check with us for the correct element.


Heating circuit fault

As above, this is most probably going to be an issue with the heating element as the thermistors have their own fault codes below.


Heat pump scaled up

Quite how the dishwasher senses this is not known but it would seem to indicate a poor flow of water through an instantaneous heater in the dishwasher as that would seem the only logical way in which this could be detected. This would assume that the inside of the heater was choked with limescale or, blocked in some other way, preventing the correct flow of water through the heater. A poor flow of water could cause the element to overheat and fail.


NTC thermistor fault

This error code can be caused by the thermistor or the wiring to it being faulty.


Not used

Seek engineer if displayed.


Hot water inlet temperature too high, greater than 75˚C

Generally seen if connected to a hot water supply, if not it could indicate a sensor or board failure.


Reed switch flow sensor fault

Please check with us for these parts but we would suggest that you seek a profession engineer if this error code is displayed.


Water in base

Float sensor in the base has been activated. You can try to empty the base and restart the dishwasher as you will find noted many times in the forums but, if there is a leak this error code will simply be displayed again, you must find the cause of the leak.


Inlet valve fault

This would indicate the lack of incoming water, which will ordinarily be caused by a water inlet valve having failed.

Bosch dishwasher inlet valves are not cheap and are often quite unique to Bosch, the popular SMS valve we use is this one but, do check with us and have the ENR number from the rating plate of the dishwasher so we can identify the correct water valve for your dishwasher.


Water level too high - flow sensor

The dishwasher has, for some reason detected an overfill and is reporting that through this error code. The flow sensor note is there as that can cause this fault code to be displayed.


Water level too low - valve

As above only in reverse, the machine has not filled with enough water and this can be caused by the water valve.


Not used

Seek engineer if displayed.


Winding resistance of circulating pump fault

The electronic controlled has detected a short or a break in a winding in the main recirculation pump or main motor of the dishwasher.


Circulating pump blockage

This would be caused by a blockage or a poor water flow from the main motor of the dishwasher. This can be caused by a capacitor failure or for other reasons.


Not used

Seek engineer if displayed.


Windingresistance of drain pump fault

The controlled has detected a break or short in the drain pump wiring. Many of these dishwashers use this pump which is a cheap compatible one.


Drain filters blocked

Clear the filters. Generic instructions to clean your dishwasher filters is available from here.


Drain pump blocked or pump cover missing

This can be caused by the above or by, as the fault code indicates, a blocked drain pump.


Water switch fault

There is little details on this error code.


Not used

Seek engineer if displayed.


Turbidity sensor fault

We would strongly advice seeking an engineer for this fault as well as it is often not easy to understand or diagnose issues with turbidity sensors.

Please note that it has been stated that (all) "Future supplies of programme and power modules will no longer be preconfigured therefore only approved BSH engineers or their agents will be able to configure them (on site) using a suitably equipped laptop computer".At the time of writing to pre-configure a replacement PCB Bosch will charge you approximately £39 plus VAT on top of the cost of the module and it is not possible to do this without equipment from Bosch. Likewise, independent engineers are not allowed access to this equipment.

More Bosch Dishwasher Help, Advice And Guidance

Should you need more help and guidance please use the links from this article as most of them will help you to understand your Bosch dishwasher a lot better and probably very much help you in diagnosing the fault you have. Of course there are many other articles on the site that will also help you do this.

In addition you can post in our dishwasher forumafter registering but please do pay heed to the information below before doing so and read the guides, they are there to help you. But if you are in any doubt at all or don't think you are up to diagnosing the fault yourself please use the engineer search to find a local dishwasher machine engineer.

You must understand certain things before you begin or attempt any repairs on your own and we want to make these points very, very clear to anyone that decides to investigate one of these or any other dishwashers:

  • We are not responsible for your safety, you are and by using this guide you accept that and accept that any damage that you may cause and work undertaken is entirely at your own risk.
  • We will advise the common causes of the fault codes but we cannot guarantee that any parts or work recommended will resolve the issue. It is entirely your responsibility to diagnose your particular problem and resolve it.
  • We are not responsible for you buying spares that do not resolve the problem, this is down to your own diagnosis not ours.
  • No warranty is inferred, implied or given.

You also have to be aware that Bosch dishwasher fault or error codes are not a "magic bullet", they will not tell you what the problem is, they will only offer you an indication of where the problem lies and they are no substitute for diagnostic skills. You can find out more about what fault codes actually tell youin this article. So please be well aware that, even with this new found knowledge you will still have to actually be capable of investigating and diagnosing the problem and this means adhering to basic appliance safety for working on them.

Please do note that manufacturers can and do change fault codes without notice and we cannot guarantee that these error codes will apply to your particular model as all codes apply to a wide range of appliances and not normally any one specific model. To determine if these fault codes do apply to your particular Bosch dishwasher model please post a request to confirm this in the forums.

Applies To Bosch Dishwasher Models

Please note that this list is not exhaustive and may not be 100% accurate as Bosch do not publish the models that fault codes apply to. It is therefore not possible to say with complete certainty that these codes will apply to every model number listed nor is it possible to say categorically that they may apply to more models than are listed.

Bosch Dishwasher

SMI2011GB/20, SMI2012GB/20, SMI2032GB/15, SMI4040GB/20, SMI4042GB/20, SMI4702GB/09, SMI4705GB/07, SMI4705GB/09, SMI4706GB/02, SMI4706GB/03, SMI4706GB/07, SMI4706GB/09, SMI5081GB/20, SMI5082GB/17, SMI5082GB/20, SMI5084GB/17, SMI5084GB/20, SMI5502GB/03, SMI5502GB/05, SMI5502GB/07, SMI5505GB/03, SMI5505GB/05, SMI5505GB/07, SMI5506GB/03, SMI5506GB/05, SMI5506GB/07, SMI6702GB/03, SMI6702GB/07, SMI6702GB/09, SMI6706GB/03, SMI6706GB/07, SMI6706GB/09, SMS2012GB/15, SMS2012GB/20, SMS4042GB/14, SMS4042GB/20, SMS4452GB/20, SMS4472GB/14, SMS4472GB/20, SMS4482GB/14, SMS4482GB/20, SMS5032GB/20, SMS5058GB/19, SMS5058GB/20, SMS5082GB/20, SMS6012GB/14, SMS6012GB/20, SMS6032GB/16, SMS6032GB/19, SMS6032GB/20, SMS6702GB/02, SMS6702GB/03, SMS6702GB/04, SMS6702GB/07, SMS6702GB/09, SMS9022GB/20, SMV4403GB/19, SMV4403GB/20, SMV5503GB/01, SMV5503GB/03, SMV5503GB/05, SMV5503GB/06, SMV5503GB/07, SPI5430GB/03, SPI5430GB/04, SPI5430GB/06, SPI5432GB/03, SPI5432GB/04, SPI5432GB/06, SPS2432GB/03, SPS2432GB/04, SPS2432GB/06, SPS2462GB/18, SPS2462GB/19, SPS5432GB/03, SPS5432GB/04, SPS5432GB/06, SPS5432GB/07, SPS5442GB/04, SPS5442GB/06, SPS5462GB/18, SPS5462GB/19, SPS6432GB/03, SPS6432GB/04, SPS6432GB/05, SPS6432GB/06, SPS6432GB/07, SPS6462GB/06, SPV4503GB/05, SPV4503GB/06, 0730100621, SMS41025/00, SMS41025/01, 0730102784, SMS21005/00, SMS21005/01, SMS51005/00, SMS51025/00, SMS51025/01, SMS61005/01, SMI2021GB/01, SMI9022GB/01, SMI9022GB/11, SMS3452GB/03, SMS3452GB/0, SMI2011GB/11, SMI2011GB/13, SMI2011GB/14, SMI2011GB/15, SMI2012GB/11, SMI2012GB/13, SMI2012GB/14, SMI2012GB/15, SMI2021GB/03, SMI2021GB/08, SMI2021GB/11, SMI2022GB/01, SMI2022GB/03, SMI2022GB/07, SMI2022GB/08, SMI2022GB/11, SMI2022GB/13, SMI5021GB/03, SMI5021GB/05, SMI5021GB/08, SMI5022GB/01, SMI5022GB/03, SMI5022GB/05, SMI5022GB/08, SMI5081GB/08, SMI5082GB/08, SMI6021GB/01, SMI6021GB/03, SMI6021GB/08, SMI6022GB/01, SMI6022GB/03, SMI6022GB/08, SMI7071GB/08, SMI7072GB/08, SMS2011GB/01, SMS2011GB/03, SMS2012GB/03, SMS2012GB/08, SMS2012GB/14, SMS2012GB/15, SMS2012GB/20, SMS3042GB/01, SMS3042GB/03, SMS3057GB/03, SMS4012GB/01, SMS4012GB/03, SMS4042GB/11, SMS4052GB/01, SMS4072GB/01, SMS4452GB/03, SMS4452GB/08, SMS4452GB/11, SMS4452GB/14, SMS4462GB/03, SMS4462GB/08, SMS4462GB/11, SMS5011GB/01, SMS5011GB/03, SMS5012GB/01, SMS5012GB/03, SMS5012GB/08, SMS5012GB/11, SMS5018GB/01, SMS5018GB/03, SMS5018GB/11, SMS5032GB/03, SMS5032GB/08, SMS5058GB/01, SMS5058GB/08, SMS6011GB/01, SMS6011GB/03, SMS6032GB/03, SMS6032GB/08, SMS6032GB/11, SMS6032GB/14, SMS6052GB/01, SMS7052GB/01, SMS9022GB/01, SMS9022GB/08, SMS9022GB/11, SMS9022GB/14, SMU2011GB/01, SMU2011GB/03, SMI2031GB/11, SMI2031GB/13, SMI2031GB/14, SMI2031GB/17, SMI2031GB/20, SMI2032GB/11, SMI2032GB/13, SMI2032GB/14, SMI2032GB/17, SMI2032GB/20, SMI4706GB/01, SMI5081GB/11, SMI5081GB/13, SMI5081GB/14, SMI5082GB/11, SMI5082GB/13, SMI5082GB/14, SMI5084GB/08, SMI5084GB/11, SMI5084GB/14, SMI5086GB/08, SMI5086GB/11, SMI5086GB/13, SMI5086GB/14, SMI5086GB/17, SMI5086GB/20, SMI5502GB/01, SMI6702GB/02, SMI6706GB/01, SMI6706GB/02, SMI7071GB/11, SMI7071GB/14, SMI7072GB/11, SMI7072GB/14, SMI9022GB/08, SMI9022GB/14, SMS2012GB/11, SMS3042GB/08, SMS3042GB/11, SMS3042GB/12, SMS3042GB/14, SMS5032GB/11, SMS5032GB/14, SMS5032GB/19, SMS5058GB/11, SMS5058GB/14, SMS5082GB/11, SMS5082GB/14, SMS5082GB/19, SMS5092GB/11, SMS5092GB/12, SMS6502GB/01, SMS6502GB/03, SMS6502GB/05, SMS6502GB/06, SMS6502GB/07, SMS6702GB/01, SMI4040GB/11, SMI4040GB/13, SMI4040GB/14, SMI4042GB/11, SMI4042GB/13, SMI4042GB/14, SMI4702GB/01, SMI4702GB/02, SMI4702GB/07, SMI5506GB/01, SMI6702GB/01, SMS5092GB/14


How do I reset the error code on my Bosch dishwasher? ›

Hold the Start button for 3 seconds.

The most standard way to reset a Bosch dishwasher is simply to press down on the Start button for 3 seconds. The Start button is often labelled with “Reset” as well, or even “Reset 3 Seconds”.

How do I run diagnostics on my Bosch dishwasher? ›

Turn on the dishwasher, then release the two buttons. The light above each of these buttons should flash. Start the test cycle by pressing the Power Scrub Plus and Regular Wash buttons again. The test programme will begin and an error code will be displayed at the end of the cycle if a fault has been detected.

What does error E01 mean on Bosch dishwasher? ›

Error code E01: Pump circuit failure or heating issue

An E01 error code usually refers to a pump control circuit failure on the main control board. With some models, the issue can cause a lack of water in the dishwasher, which stops the heater from running and triggers the error code.

How do you do a hard reset on a dishwasher? ›

You can reset your dishwasher by unplugging it from its power source for one minute and then plugging it back in. If it's hardwired to a power supply or the plug is not easy to access, turn off the breaker for the dishwasher on your home's electrical panel and turn it back on after one minute.

How do I reset my Bosch E15 error code? ›

The Bosch E15 error code is likely indicating too much water in the dishwasher; however, the error code could also be due to a control board glitch. If the error code was caused by a glitch, performing a hard reset by disconnecting the power to the dishwasher for five minutes should clear the error code.

How do I run a full system diagnostic? ›

Go to Start , then select Settings > Privacy > Diagnostics & feedback. Go to Start , then select Settings > Privacy & security > Diagnostics & feedback.

How do I boot into diagnostic mode? ›

Press WINDOWS-R on the keyboard to bring up the Run window, enter MSCONFIG and click OK. Under the General tab, click "Diagnostic startup."

How do I fix E01 error? ›

This error code usually relates to problems with the door lock.
Switch off and unplug your machine.
  1. Switch off and unplug your machine.
  2. Check the door lock itself. (Sometimes the plug on the lock can melt.)
  3. Check the wiring to the door lock.
  4. Check the wiring to the control board from the door look.

How do I fix E1 error on my dishwasher? ›

Remove the door seal – Open the door and pull out the seal from the channel on the edge of the door, noting which side of the door the seal faces. Clean the channel where the seal sits – Use mild dishwashing detergent and a cotton swab to thoroughly clean the channel where the seal sits and let the channel dry.

How do I fix E1 error? ›

Typically, the E1 Error Code means that your boiler is running low on pressure, which is the cause of the boiler locking out and not working. When you see this code being displayed, all you have to do to fix it and get things back to normal is to repressurise your boiler.

What is the most common problem with a dishwasher? ›

A dishwasher that doesn't drain properly is one of the most common dishwasher issues faced by homeowners. However, as frustrating as it may be, it's rarely something you can't solve yourself.

How do I run a diagnostic in command prompt? ›

Hit Windows Key + R on your keyboard to launch the Run dialog box and type: perfmon /report and hit Enter or click OK. You can run that same command from the Command Prompt (Admin) to generate the report, too.

What do flashing lights on Bosch dishwasher mean? ›

If the control board is not sending power to one of the components, it's likely the control board is at fault and will need to be replaced. The main control board provides power to nearly every component of the dishwasher. It's possible that the board has shorted and is causing the lights to flash or blink.

What does the S with arrows mean on dishwasher? ›

Easy to recognize: the dishwasher salt symbol looks like an "S" for salt. When you see it, just fill up the container and your appliance will add the right amount with each rinse cycle. Salt softens hard water to protect your dishwasher and dishes from limescale deposits.

Why is the check water light flashing on my Bosch Serie 2 dishwasher? ›

A Bosch dishwasher check water and rinse aid light flashing may indicate that the anti-flood switch has been activated. This may be accompanied by an error code E9. This is often caused by a blocked drain or a faulty drain pump, and you may find water leaks under the machine.

Is there a way to force my dishwasher to drain? ›

Mix together about one cup each of baking soda and vinegar and pour the mixture into the standing water at the bottom of the dishwasher. Leave for about 20 minutes. If the water is draining or starting to drain at that time, rinse with hot water and then run the dishwasher's rinse cycle.

What are the five reasons a dishwasher won't start? ›

There are several reasons why your dishwasher refuses to start, but the most likely offenders include the door latch assembly, electric control timer, selector switch, and thermal fuse. When any of these components fail, it could prevent your dishwasher from starting.

What does fault code E15 mean on Bosch dishwasher? ›

If the E15 error code appears on the appliance display it means that there is a water leakage. You can check around the dishwasher base for leakage and the hoses for any visible kinks or damage, which could contribute to this appliance behaviour.

How do you fix an E5 error on a Bosch dishwasher? ›

Error code E5

If the float switch becomes faulty, too much water will get into the dishwasher and the E5 error code will appear. To fix the problem, first, try to reset the float switch by turning the dishwasher off and on. If that doesn't work, you will need to test the switch with a multimeter.

How do I unclog my Bosch dishwasher drain? ›

A Bosch dishwasher not draining water can be as simple a fix as cleaning out a clogged filter. Remove the bottom rack to access the filter tube and remove it bu turning counter-clockwise and clear out any food and debris.

How do I force Bosch to drain? ›

If your Bosch dishwasher doesn't have Cancel Drain on the control panel, it most likely needs to be reset by holding the Start button for 3–5 seconds.

How do I fix my Bosch e25 error? ›

An e25 error code indicates that either the drain pump is blocked or the drain pump cover is loose. A blockage in the drain hose or a clogged filter may also cause the e25 error code. To fix the issue, the drain pump and dishwasher filter should be cleaned out and checked for damage.

How do I run system troubleshoot? ›

To run a troubleshooter: Select Start > Settings > Update & Security > Troubleshoot, or select the Find troubleshooters shortcut at the end of this topic. Select the type of troubleshooting you want to do, then select Run the troubleshooter.

How do you do a hardware diagnostic? ›

To launch the tool, press Windows + R to open the Run window, then type mdsched.exe and hit Enter. Windows will prompt you to restart your computer. The test will take a few minutes to complete. When it's over, your machine will once again restart.

How do you detect hardware problems? ›

Use the device troubleshooter to diagnose and resolve the issue. Open Settings. Click on Update & Security. Click on Troubleshoot.
  1. Open Start.
  2. Search for Device Manager and click the top result to open the app.
  3. Expand the branch with the device you want to check.
  4. Right-click the device and select the Properties option.
May 17, 2022

What does diagnostic mode do? ›

Diagnostic mode is an environment that runs a set of tests before the browser starts. These tests vary in sophistication, from trivial checks that critical files exist, to more complex (and time consuming) tests that test the integrity of the key databases.

What is the shortcut to open diagnostic box? ›

From the Windows desktop, press the Windows and R keys to open the Run window. In the Open: field of the Run window, type dxdiag. Click OK or the Enter key to open the DirectX* Diagnostic Tool.

How do I enable diagnostic services? ›

Option 1: Via Services App
  1. Step 1: Press Windows + R to open Run window.
  2. Step 2: Input services. ...
  3. Step 3: Find Diagnostic Policy Service and double-click it to open its Properties.
  4. Step 4: Choose Automatic or Manual from the drop-down list of Startup type. ...
  5. Step 5: Click Apply and OK to save changes.
Jun 29, 2020

What is the first step of troubleshooting the malfunctioning washing machine? ›

First, make sure the power is on and that the machine is plugged in. You should check the outlet to make sure it's working. Then, check if a fuse is blown or a circuit breaker thrown. If those both work, see if the Delay Start button or Control Lock feature has been activated.

What does Error E01 mean? ›

The fluff filter of your dryer has become blocked with fabric softener residue (difficult to detect) or with fluff. Our advise is to clean the fluff filter after each drying cycle. Our Video shows how to clean your tumble dry filter.

What does E01 and F03 mean? ›

What Does the F03/E01 Error Code Mean? The error code F03/E01 indicates a problem with the water level. If your washer doesn't get enough water, it will not be able to work correctly. Most of the time, this error code is a result of a faulty sensor, hose, or brand pipe.

What is E1 error code? ›

2022. When the Washing Machine is displaying E1 in the panel, it is indicating an error in the water supply. The appliance is not detecting that the unit is filling with water.

What can I do to fix the E15 error code on my Bosch dishwasher? ›

A Bosch E15 error code is caused by there being too much water in the base of the dishwasher. The best way to fix the E15 error code is to remove the water from the basin and reset the safety switch.

What does error flashing lights mean on Bosch dishwasher? ›

If the control board is not sending power to one of the components, it's likely the control board is at fault and will need to be replaced. The main control board provides power to nearly every component of the dishwasher. It's possible that the board has shorted and is causing the lights to flash or blink.

What is Bosch E05 error? ›

What Does The Bosch Hot Water System Error Code E05 Mean? The Bosch error code E05 indicates a fault with the temperature sensor at the evaporator fins. The evaporator fins are thin pieces of metal which bring the air closer to the coils so that heat can be transferred to the water.

What does a blinking red light mean on a Bosch dishwasher? ›

If you're Bosch dishwasher displays a red light on the floor and it is currently blinking and the dishwasher is not running it is because you are out of rinse aid fill the reservoir and it should work.

Why is my check water light flashing E15 on my Bosch dishwasher? ›

If the E15 error code appears on the appliance display it means that there is a water leakage. You can check around the dishwasher base for leakage and the hoses for any visible kinks or damage, which could contribute to this appliance behaviour.


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