All Miele Dishwasher Error Codes. How To Activate Service Mode?

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How do I find Miele dishwasher error codes? To identify a Miele dishwasher fault, look at the digital display or the flashing sequence of the “Intake/Drain” LED. Common codes include F11 (Drainage), F12/F13 (Water Intake), and F70 (Waterproof System). To access deeper diagnostics, you can enter Service Mode by holding the “Program” button while powering on the unit and pressing the button in a specific sequence.

How to Activate Miele Dishwasher Service Mode

Table of Contents

How to Activate Miele Dishwasher Service Mode
- Step-by-Step Diagnostic Access for each Miele Dishwasher Model
Miele Dishwasher Error Codes & Meanings
- Important Notes
How to fix Miele Error Codes F01-F14
- - Error Code F01 or F02: Water/Heating NTC or Leads Short-Circuited
  - Miele F11 Error: Drainage Issues
  - Error Code F12: Water Intake Fault at Start of Step
  - Error Code F13: Water Intake Fault at End of Step
  - Error Code F14: Water Intake Fault: Heater Pressure Switch
How to Fix Miele Dishwasher Error Codes F15-F26
- - Error Code F15: Water Intake Fault – Hot Water
  - Error Code F18: Flow Meter Stationary State Monitor B3/4
  - Error Code F24: Heater Relay Contact
  - Error Code F25: Target Temperature Fault
  - Error Code F26: Boiling Protection
How to Fix Miele Error Codes F32-F52
- - Error Code F32/F33: Door Lock Does Not Close
  - Error Code F36: Door Lock Switch Defective
  - Error Code F40: Electronic Fault
  - Error Code F42: Line Frequency Registration Fault
  - Error Code F47: Faulty Interface Between Selection-Display Electronic (BAE) & Control-Power Electronic (SLT)
  - Error Code F51: Heater Pressure Switch
  - Error Code F52: Heater Pressure Switch Has Reset During Heating
How to Fix Miele Error Codes F53-F79
- - Error Code F53: Speed Sensor Fault
  - Error Code F63: Slide Shutter Fault
  - Error Code F67: Circulation Pump Speed Too Low
  - Error Code F68: Circulation Pump Operating After Shutoff
  - Error Code F69: Circulation Pump Blocked
  - Error Code F70: Float Switch Fault
  - Error Code F78: Circulation Pump Fault
  - Error Code F79: Circulation Pump Interaction Fault
How to Fix Miele Error Codes F84-F91
- - Error Code F84: Slide Shutter Positioning Fault
  - Error Code F85: Slide Shutter Signal Change Fault
  - Error Code F86: Salt Container Lid Contact Fault
  - Error Code F87: Sensor Softener Fault
  - Error Code F88: Turbidity Sensor Fault
  - Error Code F91: Load Size Registration Inactive
Newer Miele Dishwashers and Troubleshooting
- New Miele Model Series
- Reported Problems & Known Issues
Troubleshooting Guides for Other Miele Appliances:

To enter Service Mode on a Miele dishwasher, the specific sequence of button presses depends on the series and control panel layout. While the general logic is similar, the number of presses and the specific indicator lights vary.

Miele dishwasher error codes on control panel

Initial State: Ensure the dishwasher door is closed (or open depending on model’s panel access) and the unit is switched OFF.

Below is a breakdown of the entry procedures for the various models typically covered in Miele diagnostic guides:

Step-by-Step Diagnostic Access for each Miele Dishwasher Model

Model Series / Name	Button Sequence	Acknowledgment Signal
Inspira & Advanta (G 118x, G 2170, G 218x)	Hold Program, turn On. Release, then press 3 times (hold 3rd press).	“Rinse & Hold” LED flashes.
Optima (G 1202)	Hold Start/Stop, turn On. Release, then press 3 times (hold 3rd press).	“Start/Stop” LED flashes slowly.
Optima, Advanta & Diamante (G 1262, G 1470, G 2020, G 2120, G 2470)	Hold Program, turn On. Release, then press 4 times.	“Intake/Drain” LED flashes.
LaPerla (G 283x, G 2872)	Hold Program, turn On. Release, then press 6 times.	“Intake/Drain” LED flashes rapidly.
Modern G-Series (Digital Display / Touch Controls)	Hold Start/Stop (or Program), turn On. Release, then press 3 times (hold 3rd press).	Display shows “Technical Service” or Software Version.

The Sequence: As soon as the display lights up or the machine responds, release the Program button and immediately press it 3 times in quick succession.
The Hold: On the third press, do not release—hold the button down until the screen displays “Technical Service” or the “Rinse” LED begins to flash rapidly.
Navigation: Use the arrow keys or the Program button to scroll through the menu. Look for options like “Fault Memory” (to see previous error codes) or “Component Test” (to manually run the motor or heater).
Exit: To exit service mode and return to normal operation, simply turn the dishwasher OFF.

Now that you know how to enter Service Mode on your Miele dishwasher, we will now explain what each code means and what to do about it.

Miele Dishwasher Error Codes & Meanings

Error Code	Meaning	Likely Cause
F00	No fault registered
F01 / F02	Heating fault	Defective heater, wiring issue, or control board failure (short circuits)
F11	Drainage fault	Clogged drain hose, blocked filter, or faulty drain pump
F12	Water intake fault at start of step	Low water pressure, closed valve, clogged inlet filter
F13	Water intake fault at end of step	Low water pressure, closed valve, clogged inlet filter
F14	Heater pressure switch fault	Faulty pressure switch or control issue
F15	Hot water intake fault	Water temperature too high or plumbing issue
F18	Flow meter stationary state monitor. Water intake problem	Restricted water flow or inlet valve issue
F19	Flow meter stiff and not turning freely	Flow Meter defective
F24	Heater relay fault	Relay stuck or control board problem
F25	Temperature sensor fault	Failed thermistor or wiring issue
F26	Heater relay welded; boiling protection	Heater stuck on; control board failure
F32	Door lock fault (won’t close)	Door not locking properly or faulty latch
F33	Door lock blocked (won’t open)	Mechanical obstruction in door lock
F36	Door lock wiring fault	Electrical issue in door lock circuit/switch defective
F40	Electronics failure	Control board malfunction
F42	Line frequency fault	Power supply frequency problem
F47	Interface communication fault (between BAE & SLT)	Control board communication error
F51	Pressure sensor fault	Faulty pressure switch or blocked air trap
F52	Heater output too low	Heating element or relay issue
F53	Speed sensor fault	Circulation pump speed sensor failure
F63	Water path control fault	Diverter motor or water distribution issue
F67	Circulation pump fault	Pump failure or blockage
F68	Circulation pump blocked	Debris in pump or impeller jam
F69	Circulation pump fault	Electrical or mechanical pump failure
F70	Float switch activated	Leak detected in base pan
F78	Circulation pump malfunction	Pump motor or electronics issue
F84 / F85	Automatic detergent dispenser fault	Dispenser motor or control failure
F86	Lid contact fault	Salt
F87	Sensor Softener fault
F88	Turbidity sensor fault
F91	Load size registration inactive

Important Notes

Error codes may differ slightly by model, series, or region.
Resetting power can clear temporary faults, but recurring codes usually indicate a mechanical or electrical problem.
F70 (leak detected) should always be addressed immediately to prevent water damage.

How to fix Miele Error Codes F01-F14

Error Code F01 or F02: Water/Heating NTC or Leads Short-Circuited

After this fault is registered, the heating will not be activated and rinse aid will not be dispensed. Cause: NTC temperature sensor R30 or its connection leads short-circuited or open-circuited. How to Fix It:

Check the temperature sensor and its leads for continuity. At 68°F (20°C), the temperature sensor resistance should be approximately 14.9k (± 750); at 77°F (25°C), approximately 12k (± 600) (guide figures only).
Check the plug connections.
Replace the temperature sensor, if necessary.

Miele F11 Error: Drainage Issues

Symptom: Water present in an appliance and is not being drained off. Background information: After each drain pump step, the circulation pump operates for 2 seconds and heater pressure switch B1/13 checks the water level. If it is too high (large quantity of residual water remaining in the cabinet), the drainage time is extended. If, after a further check, the water level is still too high, then the program is interrupted, the fault code is saved and the drain pump is activated.

Fault code F11 is also registered if heater relay 1K1 is not activated after the fault code F51 register check.

Drain hose kinked
Drain blocked.
Ball in non-return valve in the sump has not opened (e.g., jammed).
Foreign objects in heater pressure switch.
Heater relay defective.
Heater relay (coil or contacts) becomes defective during the drainage step (after fault code F51 register check).

Error Code F12: Water Intake Fault at Start of Step

Symptom: During the first 5 seconds of any water intake step, at least 15 pulses from flow meter B3/4 should be registered. If this given number of pulses is not detected, the display reads Water inlet fault and/or the “Intake/Drain” LED flashes (depending on model). The water inlet valve will be activated at 10-second intervals for one hour. The drain pump will also be activated at intervals to prevent the possibility of the appliance overflowing. All other components remain inactive. If these attempts to achieve the minimum pulse rate fail, the buzzer is activated for 2 minutes.

On-site shutoff valve (water supply) closed
On-site water supply not in order (water pressure below 14.5 pounds per square inch)
Water inlet valve defective
Flow meter B3/4 is not providing any pulses

Remove the left side panel.
Check that the circuit board with reed switch on flow meter B3/4 is seated correctly.
Check that the reed switch connection plug is seated correctly.
Replace the reed switch, if necessary.
Check the flow meter for pulses. a. While the appliance is in operation and no pulses are delivered, take a magnet and pass it over the reed switch. If a pulse is then delivered, replace the water diverter. If no pulse, replace the reed switch. b. While the appliance is in operation and pulses are delivered, reconnect the electrical connector to the electronic board, clear the fault and operate the appliance. If an F12 is still displayed, replace the electronic board.
Check the control lead from the electronic to flow meter B3/4.
Replace the water diverter, if necessary.

Flow meter electrical connection open-circuited

Check the wires to the flow meter reed switch for continuity.
Check the plug connections.

Error Code F13: Water Intake Fault at End of Step

Symptom: The program is interrupted and the drain pump is operated. After approximately 2 to 4 minutes, the buzzer is activated for 2 minutes.

Background information: This fault is registered when the desired number of pulses, which varies depending on the program, has not been detected within a certain given time (maximum 4 minutes). If the selected program starts with a water softener flushing cycle, the fault code register check is carried out earlier. In the event of a fault, the selected program is interrupted after approximately 30 seconds and the fault is indicated.

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On-site water supply not in order
Water inlet valve defective
Flow meter B3/4 is providing too few pulses

Error Code F14: Water Intake Fault: Heater Pressure Switch

Symptom: The program is interrupted and the drain pump is operated. See Table for model-specific fault indications.

Background information: With the circulation pump operating after a water intake step, the heater pressure switch is checked to ensure that sufficient water pressure exists in the wash water circuit. For this the heater relay must have been activated.

During a heating step the heater pressure switch may have registered no or insufficient water pressure at the circulation pump.
Heater pressure switch B1/13 defective or blocked by foreign objects.
Circulation pump inoperative. Circulation pressure too low (no pressure at heater pressure switch). Pump may be blocked by foreign objects.
Flow meter B3/4 defective (incorrect water quantity registered).
Circulation pump winding overheated; winding protection has cut out.
After a water intake step, heater pressure switch B1/13 has not opened switching steps 11–12 and 21–22. This causes the anti-stiction routine to be started.

How to Fix Miele Dishwasher Error Codes F15-F26

Error Code F15: Water Intake Fault – Hot Water

Intake temperature of the hot-water connection is too cold (below 100°F).

Error Code F18: Flow Meter Stationary State Monitor B3/4

The water inlet valve is open when it should not be (a signal to open it has not been given by the electronic). Water then flows into the appliance and unexpected pulses from the flow meter are detected. Unexpected pulses from the flow meter are also detected when the water inlet valve is not activated.

Error Code F24: Heater Relay Contact

Heater relay contacts have fused together
Moisture in heater relay
Fault in the plug on the output side of the heater relay. Contamination or corrosion on the plug of the heater wiring harness can cause a bridge between contacts, which can reduce the transfer resistance below a value of 10 megaohms

Error Code F25: Target Temperature Fault

During the heating stage, the desired temperature has not been reached within the given time (minimum 75 minutes). In subsequent wash blocks, after this fault has been registered, the heater is not activated and no rinse aid is dispensed.

Heater defective.
Heater relay defective.
Excess quantity of detergent or rinse aid dispensed. Excess foam has developed. Excess foam can cause a drop in water flow pressure, directly affecting the Heater pressure switch.

Error Code F26: Boiling Protection

Temperature at NTC temperature sensor has exceeded 194°F (90°C).
NTC temperature sensor providing inaccurate information
Heater relay closed

How to Fix Miele Error Codes F32-F52

Error Code F32/F33: Door Lock Does Not Close

The given time for retraction of the adjustable door lock latch from position 3 to 2, or 2 to 1 is not sufficient.
Given time period for new positioning exceeded

Error Code F36: Door Lock Switch Defective

S4 and S80 closed at the same time (Replace the comfort door closing aid)

Error Code F40: Electronic Fault

The electronic has a fault that cannot be repaired by the service department (such as a hardware fault).

Error Code F42: Line Frequency Registration Fault

Main power supply not in order. A check is carried out to ensure that the line frequency is within certain valid ranges (50 ± 5 Hz or 60 ± 5 Hz). This fault is registered when it cannot clearly be established which valid range is applicable

Error Code F47: Faulty Interface Between Selection-Display Electronic (BAE) & Control-Power Electronic (SLT)

Communication between BAE and SLT faulty

How to Fix Miele Dishwasher Error Codes F51-

Error Code F51: Heater Pressure Switch

One second after program start, heater relay K1/1 is activated. This enables a check as to whether the contacts on heater pressure switch B1/13 have closed on switching steps 21/22 or 11/12. If the electronic receives no power, an F51 fault is stored.

Heater relay defective; contact open.
Heater relay solenoid defective
Connection from heater relay to electronic is open-circuited
Heater pressure switch open- or short-circuited.
Foreign objects in heater pressure switch

Error Code F52: Heater Pressure Switch Has Reset During Heating

Excess quantity of detergent or rinse aid dispensed. Excess foam has developed.
Heater pressure switch defective.
Pump pressure too low.
An item has tipped over and a large quantity of water is retained, e.g., in a bowl, and is then not available for the wash water circuit. This reduces the pump pressure.

How to Fix Miele Error Codes F53-F79

Error Code F53: Speed Sensor Fault

With the circulation pump activated the speed sensor does not provide any signals.

Circulation pump blocked.
Speed sensor defective

Error Code F63: Slide Shutter Fault

Even though the slide shutter motor has been activated, there is no signal change at the position switch. The slide shutter motor will be activated again whenever repositioning is required

Position switch defective
Connection wires open- or short-circuited
Drive (synchronous motor) defective
Slide shutter gearing defective.

Error Code F67: Circulation Pump Speed Too Low

The check is carried out 10 seconds after the circulation pump has started.

Circulation pump stiff and not turning freely
Speed sensor defective.
Circulation pump capacitor defective

Error Code F68: Circulation Pump Operating After Shutoff

The speed sensor registers that the circulation pump is still operating even after it has been switched off. The frequency converter of the pump registers a speed signal from the electronic, so a target speed is set.

Speed sensor defective
Electronic defective.

Error Code F69: Circulation Pump Blocked

With the circulation pump operating, the heater pressure switch contacts are checked. For this, the heater relay must have been activated and both electronic’s inputs must be potential-free.

Heater pressure switch defective
Heater relay defective
Circulation pressure too low because circulation pump is blocked by foreign objects.

Error Code F70: Float Switch Fault

Water in the drip pan. Changeover contact of overflow float switch B8/3 closed from 1 to 4
Float switch defective
Drip pan warped after transport

Error Code F78: Circulation Pump Fault

Interrupted connection between the electronic and the circulation pump
Faulty circulation pump (low or excess voltage, blocked, etc.).
Frequency converter electronic defective

Error Code F79: Circulation Pump Interaction Fault

Faulty interaction between the frequency converter electronic of the circulation pump and the electronic (SLT).
Frequency converter electronic defective
Control electronic (SLT) defective

How to Fix Miele Error Codes F84-F91

Error Code F84: Slide Shutter Positioning Fault

Position switch defective – Replace the circulation pump.
Drive (synchronous motor) defective – Replace the circulation pump
Slide shutter mechanism defective – Replace the circulation pump
Turbidity sensor connection wires open-circuited

Error Code F85: Slide Shutter Signal Change Fault

Symptom: Even though the slide shutter has not been activated, a signal change has been detected at the position switch. If the fault is registered before the circulation pump has been activated for the first time (or before program start), the program is interrupted and the drain pump is operated.If the fault is registered later, the fault message will be indicated in the display at the end of the program.

Position switch B3/12 defective; intermittent contact
Electronic defective

Error Code F86: Salt Container Lid Contact Fault

Symptom: If the fault is detected during a program, the program will be interrupted and the drain pump will start. The display reads Close salt container lid. If the fault is detected before the start of a program, the message Close salt container lid will be displayed. Background information: This fault is detected if the reed switch is constantly open during the monitoring period

Lid not closed.
Magnet missing.
Reed switch magnet defective

Error Code F87: Sensor Softener Fault

Symptom: If this fault is registered, the program is not interrupted. The fault will only be indicated when the fault code memory is checked in the service mode.Background information: If this fault is registered, an emergency program operates in which the reactivation start time and the switching points for the EGS (electronically controlled water softener) valve are given.

Voltage supply (approximately 9VAC) to the sensor softener 10N1 electronic or the data connection open-circuited
Sensor softener electronic conductivity measurement defective

Error Code F88: Turbidity Sensor Fault

False or no values from turbidity sensor
Foreign objects in the measurement path
Turbidity sensor connection wires open-circuited.

Error Code F91: Load Size Registration Inactive

Symptom: If this fault is registered, the program is not interrupted. The fault will only be indicated when the fault code memory is checked in the service mode. Background information: If this fault is registered, the water intake block will operate by taking in the default water quantity. In the subsequent additional fill, the quantity of which will normally depend on the size of the load, the water intake block is replaced by a water intake block with fixed water quantity.

Speed sensor defective
Water has collected in tipped-over dishes (e.g., large bowls). Subsequent water fill is not successful.

Newer Miele Dishwashers and Troubleshooting

Miele has recently expanded its lineup with the G 7000 and G 5000 series. While these models are highly rated for being whisper-quiet (as low as 38 dBA) and for innovative features like AutoDos (automatic detergent dispensing), users have reported specific technical and maintenance issues.

New Miele Model Series

The G 7000 Series is Miele’s flagship line, featuring high-end tech like the PowerDisk system and WiFi connectivity. The Miele G 7196 SCVi is a popular model in this range, known for its 3D MultiFlex Tray and QuickIntenseWash which cleans and dries in under an hour.

The G 5000 Series serves as the entry-to-mid-range tier. Models like the Miele G 5056 SCVi offer the same core Miele cleaning reliability and AutoOpen drying but often skip the automatic detergent dispensing found in the 7000 series to keep the price point more accessible.

Reported Problems & Known Issues

Despite their premium build, several common complaints have surfaced regarding these newer generations:

Responsive Button Delay (Standby Mode): Many users report that the Power button seems unresponsive. This is often not a hardware failure but a 4-second “wake-up” delay caused by the energy management system when the machine has been idle.
AutoDos / PowerDisk Faults (F600 series): The new automatic dispensing system can sometimes trigger F600 or F601 errors if the dispensing outlet is blocked or if the PowerDisk is not seated correctly.
Firmware & Software Glitches: Because these are “smart” appliances, they can experience F28 errors related to drying faults that are occasionally resolved through firmware updates via the Miele@mobile app rather than physical repairs.
Drainage Issues (F11): While not exclusive to new models, the F11 error remains common. In newer units, this is frequently caused by a misaligned drain pump cover or debris in the non-return valve.
Rack Rusting: Some long-term users have reported bubbles in the coating or rust spots on the racks, which Miele often attributes to the use of specific harsh detergents (like plant-based powders) that may not rinse away fully in eco-modes.

Troubleshooting Guides for Other Miele Appliances:

Read: Miele Vacuum Troubleshooting Guide

Read: Miele Washers

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