Modern Siemens washing machines use an electronic diagnostic system to detect abnormal operating conditions. When the control electronics identify a problem with components such as the water inlet system, drain pump, heater, pressure sensor, door lock, motor or safety system, an E-code or F-code may appear on the display.

Examples include:

E16 / F16, E17 / F17, E18 / F18, E19 / F19, E20 / F20, E23 / F23, E26 / F26, E28 / F28, E29, E32 and E34.

Siemens' current support resources confirm that the precise codes available vary considerably by washer generation and model. For example, its UK support system lists E/F16, E/F17, E/F18, E/F19, E/F20, E/F23, E/F26, E/F28, E/F29, E/F32 and E/F57 among the three-digit display families. citeturn1search0turn1search3

Therefore, an important rule applies:

Never replace the model-specific Siemens service information with a generic error-code list. Always verify the exact code against the appliance's E-Nr/model number and user/service documentation.

This is particularly important for codes such as E21/F21, E35, E36, E57 and E67, whose interpretation may differ between generations or may not appear as a standalone user-facing code on some current Siemens support pages.

Why Siemens Washing Machines Use Both E and F Codes

Depending on the generation, display design, firmware and market, a related fault may appear in formats such as:

• E16

• F16

• E:16

• F:16

• E00-16

Consequently, users searching for Siemens E18 and Siemens F18 may be dealing with the same basic fault family.

Siemens specifically states, for example, that E18 and F18 can represent the same drainage fault on applicable machines. citeturn0search4

Quick Siemens Washing Machine Error Code Reference

Error Code	Typical / Officially Documented Meaning	User Action
E16 / F16	Door not properly locked	Check door and trapped laundry
E17 / F17	Water supply time exceeded	Check tap, pressure, inlet hose/filter
E18 / F18	Drainage/filter/hose problem	Clean pump/filter and check drain hose
E19 / F19	Heating time exceeded	Service normally required
E20 / F20	Unexpected heating	Reset; service if repeated
E21 / F21	Model-dependent	Verify exact E-Nr/manual
E23 / F23	Leakage/water detected in base area	Shut water supply; investigate leak
E25 / F25	Turbidity sensor fault on applicable models	Service required
E26 / F26	Analogue pressure sensor fault	Service required
E27 / F27	Pressure sensor fault	Service required
E28 / F28	Model-specific sensor/electronic fault family	Verify model documentation
E29 / F29	Water inlet problem	Check water supply
E32 / F32	Unbalanced load / spin interrupted	Redistribute laundry
E34 / F34	Door not properly locked on applicable models	Check door/lock
E35	Model/platform-dependent	Professional diagnosis recommended
E36	Model/platform-dependent	Professional diagnosis recommended
E57 / F57	Model/platform-dependent electronic/motor-related diagnostic	Service diagnosis recommended
E67	Model/platform-dependent	Verify service documentation

The distinction between officially documented current codes and platform-dependent codes is important. Avoid ordering replacement parts solely from a generic internet interpretation.

Siemens E16 / F16 Error – Door Not Locked Properly

Siemens documents E16/F16 as a condition where the washing machine door has not locked correctly. Laundry may be trapped between the door and the housing. citeturn0search0

Possible causes

• Door not completely closed

• Clothing trapped in door seal

• Machine overloaded

• Door latch obstructed

• Door interlock malfunction

• Wiring problem at interlock

• Electronic control fault

Troubleshooting

Open the door and inspect the complete circumference of the seal.

Remove any clothing trapped between the glass, gasket and cabinet.

Reduce an excessively large load.

Close the door firmly until the latch engages.

Restart the programme.

If E16/F16 repeatedly returns even though the door mechanically closes correctly, the door interlock, wiring or control circuit may require testing.

Siemens E17 / F17 Error – Water Supply Time Exceeded

E17/F17 indicates that the washer has taken too long to receive the required amount of water.

Siemens recommends checking water pressure and states that approximately 10 litres per minute should flow from a fully opened tap during its suggested bucket test. citeturn0search0

Common causes

• Water tap partially closed

• Low mains water pressure

• Kinked inlet hose

• Clogged inlet filter

• Blocked AquaStop hose

• Defective inlet valve

• Flow/pressure sensing problem

Troubleshooting

Check that the water tap is fully open.

Inspect the inlet hose for twisting or crushing.

Turn off the water before disconnecting an inlet hose.

Inspect and clean the inlet filter where appropriate.

If an AquaStop system is installed, check for a supply restriction.

If normal water pressure reaches the appliance but the error remains, technician-level testing of the inlet valve and associated sensing/control circuitry may be necessary.

Siemens E18 / F18 Error – Drainage Problem

E18/F18 is one of the most common Siemens washer errors.

Siemens describes E18 as a problem draining water and identifies a blocked pump/filter or kinked/blocked drain hose as common causes. citeturn0search4

Symptoms

The machine may:

• Stop with water inside

• Refuse to spin

• Take unusually long to finish

• Display E18/F18

• Leave clothes soaking wet

Possible causes

• Blocked pump filter

• Coin or button trapped in pump

• Lint accumulation

• Kinked drain hose

• Blocked siphon/waste connection

• Drain pump failure

• Wiring/control problem

Safe troubleshooting

Switch the washer off and unplug it.

Be prepared for retained water before opening the pump/filter access.

Drain the remaining water carefully.

Remove and clean the pump filter.

Check for foreign objects around the accessible pump area.

Inspect the drain hose.

Check the household drain/siphon connection.

Siemens specifically recommends checking both the pump and drainage path for an E18 condition. citeturn0search4

Siemens E19 / F19 Error – Heating Time Exceeded

E19/F19 means that the expected heating operation is taking too long.

Siemens states that this fault is not normally intended to be rectified by the customer and recommends arranging service. citeturn0search0

Possible technician-level causes can involve the heating circuit, temperature monitoring, wiring or electronics.

Because the heating system operates at mains voltage, internal electrical testing should be left to a competent technician.

Siemens E20 / F20 Error – Unexpected Heating

Siemens describes E20/F20 as unexpected heating.

The manufacturer's initial recommendation is to reset the appliance by switching it off and back on. If the error persists, service should be contacted. citeturn0search0turn0search5

Do not repeatedly operate a washer showing a persistent heating-control fault.

Siemens E21 / F21 Error

E21/F21 appears in some historical/platform-specific BSH diagnostic references, but its interpretation should not automatically be copied from another Siemens or Bosch model.

For this code:

1. Record the complete error.

2. Record the Siemens E-Nr/model number.

3. Switch the appliance off.

4. Check the model-specific documentation.

5. If the error returns, arrange professional diagnosis.

This is safer than assuming that E21 always identifies the same component.

Siemens E23 / F23 Error – Leakage / Water in Base

Siemens identifies E23 as a condition in which the washing machine is leaking or water has entered the base area. citeturn0search0turn0search10

This should be treated seriously.

Immediately

Turn off the water supply.

Switch off the appliance.

Disconnect mains power when it is safe to do so.

Look for visible leakage around:

• Inlet hose

• AquaStop hose

• Drain hose

• Pump/filter cap

• Door seal

• Detergent drawer

• Plumbing connections

Do not simply keep resetting E23. Water in the base may have activated a leak-protection mechanism.

Siemens E25 / F25 Error – Turbidity Sensor Fault

On Siemens models using this diagnostic, E25/F25 indicates a turbidity sensor fault. Siemens recommends professional service rather than customer repair. citeturn0search0turn0search5

A turbidity/optical sensing system helps electronics assess water conditions on appliances equipped with that functionality.

Internal sensor replacement or electrical diagnosis should be performed by a qualified technician.

Siemens E26 / F26 Error – Analogue Pressure Sensor Fault

Siemens documents E26/F26 as an analogue pressure sensor fault. citeturn0search1turn0search12

The pressure sensing system helps the control electronics determine the water level.

Possible technician checks may include:

• Pressure sensor

• Pressure chamber

• Pressure hose

• Wiring/connectors

• Control electronics

Because incorrect water-level sensing can affect filling and safety functions, Siemens recommends service for this fault.

Siemens E27 / F27 Error – Pressure Sensor Fault

Siemens identifies E27/F27 as a pressure sensor fault and recommends professional service. citeturn0search1turn1search7

Symptoms can potentially include abnormal filling behaviour, interrupted cycles or a persistent error display.

Do not replace the pressure sensor solely because E27 appears. Wiring, pressure pathways and electronic control should also be considered during professional diagnosis.

Siemens E28 / F28 Error

E28/F28 is included in Siemens' current support code inventory for applicable machines, including its UK support system. citeturn1search0

However, its exact interpretation should be checked against the specific E-Nr and generation rather than applying a universal definition.

For a persistent E28/F28:

• Restart the appliance once.

• Record the code.

• Record the E-Nr.

• Avoid dismantling electronic/sensor assemblies.

• Consult model-specific Siemens support information.

Siemens E29 / F29 Error – Water Inlet Problem

Siemens identifies E29 as a problem with the water inlet. citeturn0search1turn1search6

Check:

• Water tap

• Household water pressure

• Inlet hose

• AquaStop hose

• Inlet filters

• Plumbing restrictions

As with E17, Siemens recommends checking whether approximately 10 litres per minute are available from a fully opened tap during its bucket test. citeturn0search1

Siemens E32 / F32 – Unbalanced Load

This code is particularly important because E32 does not necessarily indicate a broken washing machine.

Siemens explains that E32 can appear when the unbalanced-load detection system interrupts spinning because the laundry is unevenly distributed. citeturn1search2turn1search4

Solution

Open the drum after it is safe and unlocked.

Redistribute the laundry.

Mix small and larger garments rather than washing a single heavy item.

Run the spin programme again if necessary.

A single absorbent item such as a bath mat, towel or blanket can create severe imbalance.

Siemens E34 / F34 – Door Locking Problem

On applicable Siemens models, E34 indicates that the door is not properly locked. citeturn1search2turn1search10

Check:

• Door fully closed

• Laundry trapped in door

• Excessive load

• Door latch alignment

• Door lock mechanism

If the door closes mechanically but E34 continually returns, professional testing of the interlock and its electrical circuit may be required.

Siemens E35 Error

E35-related diagnostics can be platform and model dependent.

Do not automatically interpret an E35 from one BSH machine as having the same meaning on another.

If E35 appears:

• Switch the appliance off.

• Disconnect it briefly.

• Check for obvious leakage or abnormal operation without dismantling the machine.

• Restart once.

• If E35 returns, locate the E-Nr and consult Siemens service documentation.

Siemens E36 Error

Modern Siemens platforms can use more detailed extended codes beginning with E36 rather than a simple standalone E36.

For example, current Siemens support inventories include extended families such as E36-10, E36-25 and E36-26 on applicable machines. citeturn1search0turn1search1

Therefore, record the entire display code, including digits following E36.

E36 and E36-25 should not automatically be treated as identical faults.

Siemens E57 / F57 Error

E57/F57 is included among Siemens' documented three-digit support-code families for applicable washer platforms. citeturn1search0

Codes in this area may require technician-level diagnosis of the appliance's electronic drive/control system depending on the exact machine.

Recommended action:

• Switch off the machine.

• Allow it to remain off briefly.

• Restart once.

• If E57/F57 immediately returns, discontinue repeated operation.

• Arrange diagnosis using the complete E-Nr and error code.

Avoid ordering a motor, inverter or control board until the model-specific diagnostic procedure confirms the defective component.

Siemens E67 Error

E67 is another code where model-specific documentation is essential.

Electronic configuration and control-board related codes vary significantly between appliance generations.

If E67 persists after a normal power reset, professional diagnosis is recommended.

Replacing a control PCB without confirming the fault is particularly risky because some replacement electronics may require configuration, programming or coding for the specific appliance.

How to Reset a Siemens Washing Machine Error

A simple reset can clear temporary electronic faults but cannot repair a failed component.

A general safe procedure is:

1. Stop the programme.

2. Switch the washer off.

3. Disconnect mains power if appropriate.

4. Wait several minutes.

5. Restore power.

6. Start a suitable programme.

Siemens' general guidance for unlisted E/F messages is to switch the appliance off, wait briefly and switch it on again; if the error reappears, contact service. citeturn0search0

Never repeatedly reset an error involving:

• Water leakage

• Burning smell

• Smoke

• Electrical arcing

• Repeated circuit-breaker/RCD tripping

• Severe overheating

Finding the Siemens E-Nr Is Important

Before researching an error, locate the appliance's E-Nr (model number).

Siemens' product-support system is model specific, and different machines expose different diagnostic-code inventories. Older Siemens models, for example, can present a different set of supported errors from newer generations. citeturn1search8turn1search9

Record:

E-Nr:
FD number:
Complete error:
Programme being used:
Stage where error occurs:
Whether water remains in drum:
Whether the machine fills:
Whether the drum rotates:

This information can dramatically improve fault diagnosis.

Bosch vs Siemens Washing Machine Error Codes

Bosch and Siemens household appliances share their connection through BSH, and related washer platforms can consequently have similarities.

However:

Never assume that every Bosch code has exactly the same meaning on every Siemens washer.

Differences may exist because of:

• Model generation

• Hardware revision

• Firmware

• Motor system

• Sensor configuration

• Country/market

• Display system

• Washer versus washer-dryer design

Always prioritize the documentation for the exact Siemens E-Nr.

Errors Users Can Often Investigate Safely

Some faults have basic external checks that users can perform.

E16/F16

Check door and trapped clothing.

E17/F17

Check water tap, pressure and inlet hose.

E18/F18

Check drain filter, pump access and drain hose.

E29

Check water supply.

E32

Redistribute laundry.

E34

Check that the door closes correctly.

Errors More Likely to Require Professional Service

Professional assistance is advisable for persistent errors involving:

• Heating circuits

• Internal leakage

• Pressure sensors

• Electronic controls

• Motor/inverter systems

• Internal wiring

• Configuration/programming

Examples include persistent E19/F19, E20/F20, E23/F23, E25/F25, E26/F26, E27/F27 and various model-dependent electronic codes.

Safety Precautions

Before opening a pump filter, removing hoses or performing maintenance:

• Switch off the washing machine.

• Disconnect mains power when required.

• Shut off the water supply.

• Remember that retained water may be hot.

• Use towels and a shallow container when draining water.

• Never work on live electrical components.

• Never bypass a door interlock.

• Never bypass AquaStop or leak-protection devices.

• Do not operate a visibly leaking appliance.

• Do not continue operating a machine producing smoke or a burning smell.

Internal electrical measurements should only be performed by a competent technician.

Frequently Asked Questions (FAQ)

1. What does E18 mean on a Siemens washing machine?

E18/F18 normally indicates a drainage problem. Check the pump/filter, drain hose and household waste connection. Siemens confirms that E18 and F18 can identify the same drainage fault on applicable models. citeturn0search4

2. Why does my Siemens washer show E17?

E17/F17 means the required water supply has taken too long. Check water pressure, tap, inlet hose, filters and AquaStop system. citeturn0search0

3. What does Siemens E16/F16 mean?

It indicates that the washer's door is not properly locked. Check for trapped laundry, overloading and correct door closure. citeturn0search0

4. Is Siemens E32 a serious fault?

Usually not. Siemens states that E32 can indicate that the unbalanced-load detection system stopped the spin because laundry was unevenly distributed. citeturn1search2

5. What should I do when E23 appears?

Turn off the water supply because E23 can indicate leakage or water in the washer's base area. citeturn0search0

6. What does E19/F19 mean?

It means the heating time has been exceeded. Siemens recommends service for this fault. citeturn0search0

7. What does E20/F20 mean?

It indicates unexpected heating. Try switching the appliance off and back on; obtain professional service if it returns. citeturn0search5

8. What does E25/F25 mean?

On applicable Siemens washers it indicates a turbidity sensor fault, for which Siemens recommends service. citeturn0search5

9. What does E26/F26 mean?

It indicates an analogue pressure sensor fault on applicable Siemens machines. citeturn0search12

10. What does E27/F27 mean?

Siemens identifies it as a pressure sensor fault and recommends professional service. citeturn1search7

11. What does E29 mean?

E29 indicates a water-inlet problem. Check water pressure, the inlet hose, filters and AquaStop system. citeturn1search6

12. Why is my Siemens washing machine not spinning?

Possible causes include an unbalanced load, drainage failure or another detected fault. If E32 appears, redistribute the laundry.

13. Can I clear Siemens error codes by unplugging the washer?

Some temporary electronic errors may clear after a power reset. However, resetting does not repair a defective sensor, pump, heater, lock, motor or PCB.

14. Are Bosch and Siemens washing machine error codes identical?

Not necessarily. Related BSH platforms may have similar code structures, but the meaning must be verified against the exact appliance model.

15. Why does my Siemens washer show an F-code instead of an E-code?

Different Siemens generations and display systems can use E, F or expanded code formats for related diagnostics.

16. Can a blocked filter cause E18?

Yes. Siemens specifically identifies a blocked filter/pump or obstructed/kinked drainage path as possible causes of E18/F18. citeturn0search4

17. Can low water pressure cause E17?

Yes. Insufficient water flow can cause the machine to exceed its permitted filling time.

18. Should I replace the control board when E57 or E67 appears?

Not without proper diagnosis. Electronic, motor, inverter, wiring and configuration faults can sometimes produce related diagnostic codes depending on the model. Obtain the exact E-Nr and follow model-specific service procedures.

19. Where can I find official Siemens washing-machine error information?

Use the Siemens Home Appliances support website and search using your exact E-Nr/model number. Siemens provides model-specific troubleshooting, manuals and support information. citeturn0search2turn1search0

20. When should I immediately stop using the washing machine?

Stop operation if you notice:

• Water leaking from the machine

• Smoke

• Burning smell

• Electrical sparking

• Repeated RCD/circuit-breaker tripping

• Severe overheating

• Abnormal mechanical noise suggesting damage

Disconnect power and water when it is safe and arrange professional inspection.

Final Technical Advice

A Siemens error code should be considered the starting point of diagnosis rather than automatic proof that a particular component has failed.

For example:

E18/F18 → investigate the complete drainage system, not automatically the pump.

E17/F17 → investigate water supply and flow before replacing an inlet valve.

E16/F16 or E34/F34 → inspect loading and door closure before replacing the interlock.

E32 → redistribute the load before treating it as a hardware failure.

Most importantly, record the complete error code and Siemens E-Nr. Current Siemens support systems show that diagnostic-code availability differs by model and generation, and newer platforms can use expanded codes such as E36-10 or E36-25 rather than only traditional two-digit codes. citeturn1search0turn1search1

Disclaimer

This article is provided for general technical information and educational purposes only. Error-code meanings, diagnostic procedures, component designs and repair requirements can differ according to the exact Siemens washing-machine model, E-Nr, manufacturing generation, firmware and country.

Always verify the error against the official Siemens documentation for your appliance before carrying out repairs or purchasing replacement components. Electrical, electronic, heating, motor and internal water-system repairs should be performed by an appropriately qualified service professional.

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