Gaggenau Appliance Error Codes
Dishwasher
Error codes for Gaggenau DF 250, DF 251, and fully integrated dishwasher models. Gaggenau dishwashers use E-series codes identical to their Bosch parent platform — E15, E22, E24, and E25 are most common.
F1
Flood Switch Activated
AquaStop float switch triggered — water in the base pan
What This Means
F1 on a Gaggenau dishwasher indicates the flood switch (AquaStop float sensor in the base tray) has been triggered by water accumulation in the appliance's base pan. This is a safety response — the water supply is automatically shut off to prevent floor flooding. The dishwasher will not operate until the base is emptied and the leak source is identified and repaired.
Common Causes
- Internal hose connection loose — water slowly accumulating in the base over several cycles
- Door gasket/seal damaged — water escaping past the door during the wash cycle
- Drain pump seal or housing failed — water leaking into the base pan
- Dispenser drawer overflow from detergent blockage
What You Can Try
Pull the dishwasher forward from its cabinet space. Tilt the appliance approximately 45° backward (have towels ready) — this drains water from the base tray and resets the float switch. F1 should clear. Before returning the dishwasher to position, run a short cycle and observe for visible leaks. If F1 returns within a few cycles, a professional must locate and repair the leak source — do not ignore an active water leak inside a built-in appliance.
F2
Motor / Circulation Pump Fault
Wash motor or circulation pump has malfunctioned
What This Means
F2 indicates a problem with the circulation pump motor — the core component that pressurizes water and forces it through the spray arms during the wash cycle. Without a functioning pump, water cannot circulate, and dishes will not be cleaned. The dishwasher will typically stop mid-cycle when F2 appears.
Common Causes
- Circulation pump motor failed — windings burned or seized
- Pump impeller jammed by broken glass, bone, or debris
- Wiring fault between control board and pump motor
- Control board relay failure — pump not receiving power signal
What You Can Try
Power cycle at the wall for 2 minutes — a momentary electronic glitch can sometimes produce F2. If F2 returns, inspect the filter at the bottom of the tub for glass or hard debris that could have jammed the pump impeller. If the filter is clear, the circulation pump requires professional diagnosis — the pump assembly is accessed from below the appliance and requires disassembly by a trained technician.
F3 / F4
Temperature Sensor Fault
F3 = sensor failed; F4 = faulty sensor element
What This Means
F3 indicates the NTC temperature sensor (thermistor) monitoring the wash water has completely failed. F4 indicates the sensor element itself is faulty — possibly giving incorrect resistance readings rather than a full open circuit. Both codes prevent the dishwasher from controlling water temperature accurately. Without correct temperature data, the heating element may not activate, or may overheat the wash water.
Common Causes
- NTC thermistor failed — common after years of repeated heating cycles
- Limescale buildup on the sensor element insulating it from the water
- Sensor connector corroded or loose at the control board
What You Can Try
Power cycle at the wall for 2 minutes. If F3 or F4 return, the temperature sensor requires professional replacement. Run a dishwasher descaler/limescale remover program first (drum empty) — heavy scale deposits occasionally cause false sensor readings that clear after descaling. If F3/F4 persist after descaling, a technician visit is required.
F9
Electronics Malfunction
Control board fault — general electronics failure
What This Means
F9 indicates an electronics malfunction in the dishwasher's control module — a broad fault that the system cannot attribute to a specific sensor or component. This can affect any dishwasher function and may cause the appliance to stop mid-cycle or fail to start.
Common Causes
- Power surge damaging the control board
- Failed component on the control board (relay, capacitor, or microcontroller)
- Communication error between the control board and a sub-module
What You Can Try
Power off at the wall for 5 minutes and restart. If F9 clears and the dishwasher runs without returning, a transient board glitch occurred. If F9 returns consistently, the control board requires professional diagnosis and likely replacement.
U1
Fill Fault — Water Not Entering
Dishwasher not receiving water from supply
What This Means
U1 indicates the dishwasher has failed to fill with water during the cycle start. The control system expects a confirmed water level within a set time — if this is not achieved, U1 appears and the cycle cannot proceed. This is a high-priority code as no cycle can run without water.
Common Causes
- Water supply shut-off valve (under the sink or behind the dishwasher) turned off or not fully open
- Inlet hose kinked or trapped during installation
- Inlet hose mesh filters clogged with mineral deposits
- AquaStop valve on the inlet hose closed — may have triggered from a prior overfill
- Water inlet valve (solenoid) failed — not opening when energized
What You Can Try
Confirm the water supply valve is fully open. Check the inlet hose for kinks behind or beneath the appliance. Turn off the supply, disconnect the inlet hose, and inspect the mesh filter at the machine connection for mineral blockage — rinse under running water. If the AquaStop inlet hose has a red indicator visible, the AquaStop valve has triggered — replace the hose. If supply, hose, and filter are all clear, the water inlet valve requires professional testing.
E14
Flow Meter / Water Supply Detection Fault
Flow sensor cannot measure water entering the appliance
What This Means
E14 indicates the flow meter (reed switch sensor) that measures incoming water volume has detected an error in the filling system. The flow meter provides the control board with precise water volume data — without it, the dishwasher cannot ensure the correct amount of water enters each cycle. This may cause under-filling, over-filling, or cycle abort.
Common Causes
- Flow meter reed switch failed — no signal reaching the control board
- Water inlet valve failing — inconsistent water flow confuses the meter
- Filter clogged — restricting flow below the meter's detection threshold
What You Can Try
Clean all filter components thoroughly. Verify water supply pressure and valve are fully open. Power cycle for 2 minutes. If E14 returns, the flow meter requires professional replacement — it is typically located in the inlet valve assembly.
E15
Water in Base — Flood Protection Active
Leak detected in the dishwasher base tray — AquaStop engaged
What This Means
E15 is one of the most frequently encountered Gaggenau dishwasher error codes. It means the AquaStop float switch in the base pan has been activated by water accumulation — flood protection is engaged. This is identical to F1 on the older Gaggenau code format — both codes refer to the same float switch mechanism. The dishwasher will not operate until the base tray is empty.
Common Causes
- Door seal/gasket deteriorated — water leaking past during the wash cycle
- Internal hose or pump seal failed — water dripping into the base over many cycles
- Residual small water amount from a previous minor leak — base still damp and triggering the float
What You Can Try
Pull the dishwasher out and tilt approximately 45° backward to drain the base tray. Once the water drains, E15 should clear. Reinstall and run a short cycle while watching for the leak source. Inspect the door gasket for cracks, tears, or debris preventing a full seal. If E15 reappears after 2–3 cycles, the leak source must be professionally located and repaired.
E18
Water Supply Restricted
Kinked supply hose, blocked valve, or low water pressure
What This Means
E18 indicates a water supply issue — the dishwasher is receiving insufficient water flow. Unlike U1 (no water detected at all), E18 typically means water is flowing but at a rate below the required minimum. This can be caused by a partially kinked hose, a tap that is only partially open, or a jammed/hardened supply valve.
Common Causes
- Inlet hose kinked — partially restricting flow
- Supply tap only partially open — not fully turned on
- Tap valve hardened or corroded — cannot open fully (common in older installations)
- Inlet hose mesh filter partially clogged with limescale
- Low household water pressure — below the minimum required
What You Can Try
Fully open the supply tap — turn it until it stops. Check the inlet hose behind the dishwasher for any kinks or bends. Check the mesh filter in the inlet hose connection. If the supply tap feels stiff or won't open further, have a plumber service or replace the supply valve. Confirm household water pressure meets the minimum specification in your Gaggenau user manual (typically 1–10 bar).
E22
Filters Soiled or Blocked
Filter system in the sump is clogged — clean immediately
What This Means
E22 on a Gaggenau dishwasher indicates the 1Z filter system (the combination of the coarse filter and fine mesh filter in the sump base) is soiled or blocked. Clogged filters prevent water from draining freely from the sump after each cycle — residual dirty water remains at the bottom of the tub and the drain pump cannot clear it efficiently. E22 is entirely user-serviceable.
Common Causes
- Food debris, grease, and mineral deposits accumulated in the filter — not cleaned regularly
- Large food particle bypassing pre-rinsing and blocking the fine mesh
- Broken glass or small hard objects lodged in the filter assembly
What You Can Try
Remove the bottom rack. Remove the cylindrical filter by twisting counterclockwise, then lift out the flat mesh filter beneath it. Rinse all components under warm running water, scrubbing with a soft brush to remove food residue. Soak in warm water with white vinegar for 15 minutes to dissolve mineral buildup. Reinstall correctly — ensure the flat filter seats fully before replacing the cylindrical filter. Gaggenau recommends monthly filter cleaning.
E24
E25
E25
Waste Water Drain Fault
E24 = drain hose blocked/kinked; E25 = drain pump blocked
What This Means
E24 indicates the waste water (drain) hose is blocked, kinked, or the siphon connection is still sealed — water cannot exit the appliance through the drain path. E25 indicates the drain pump itself is blocked, or the drain pump cover is not locked in position — the pump runs but cannot move water. On Gaggenau dishwashers, official documentation specifically calls out the pump cover as a common cause of E25.
Common Causes
- E24: Drain hose kinked or trapped behind the appliance; drain connection at the standpipe blocked; siphon plug not removed on new installations
- E25: Drain pump blocked by debris; pump cover (located beneath the filter) not properly locked in position
- Both: Filter system clogged, causing drain pump to work against excessive back pressure
What You Can Try
For E24: Check the drain hose at the rear of the appliance for kinks. Verify the connection at the standpipe or garbage disposal is clear (and that the disposal's dishwasher knockout plug has been removed on new installations). For E25: After removing the filter system, locate the drain pump cover at the bottom of the tub and ensure it is firmly locked in position (turn clockwise until it clicks). Clear any visible debris at the pump inlet. Clean the full filter system (see E22). If both codes persist after all cleaning, the drain pump may require professional replacement.
E27
Mains Voltage Too Low
Household supply voltage below the required minimum
What This Means
E27 means the dishwasher has detected that the incoming mains voltage is below the minimum required for safe operation. Running appliances on undervoltage can damage control boards, motors, and heating elements. The dishwasher halts to protect its internal electronics.
Common Causes
- Multiple high-draw appliances running on the same circuit — voltage drop
- Faulty household wiring or failing circuit breaker
- Utility power supply issue — incoming voltage below specification
- Extension cord or non-dedicated circuit with insufficient capacity
What You Can Try
Confirm the dishwasher is on a dedicated circuit — Gaggenau appliances should not share a circuit with other high-draw appliances. Turn off other large appliances on the same breaker and retry. If E27 persists, have a licensed electrician measure the voltage at the appliance outlet and inspect the wiring and breaker panel. Contact your utility provider if the incoming supply voltage is confirmed to be low.
Refrigerator
Error codes and common faults for Gaggenau RC, RB, and RF series integrated refrigerators and freezer columns. Gaggenau refrigerators share their diagnostic platform with the Bosch/Liebherr Premium Group.
TEMP
ALARM
ALARM
High Temperature Alarm
Interior temperature exceeded safe threshold — audible alarm active
What This Means
Gaggenau refrigerators display a temperature alarm (flashing temperature display and audible alert) when the interior temperature has exceeded the safe maximum. This most commonly follows a power outage, a door left open, or a large warm load placed inside. The appliance will continue trying to cool — allow 2–3 hours for temperature recovery with the door kept closed.
Common Causes
- Power outage — appliance warmed during the interruption
- Door left open for an extended period
- Large quantity of warm food loaded — activate Fast Cooling or Fast Freezing
- Ventilation openings covered or obstructed — compressor overworking
- Appliance opened too frequently during hot weather
What You Can Try
Press the alarm button to silence the audible alert. Close all doors and verify the seals are intact. Remove any warm food and allow the unit to recover. Activate the Fast Cooling (for the refrigerator section) or Fast Freezing function to accelerate temperature recovery. Ensure ventilation openings at the rear or base are clear of debris and obstacles. If the alarm returns after 3–4 hours with no obvious cause, check for an underlying component fault — the compressor, fan, or a sensor may have failed.
DOOR
ALARM
ALARM
Door Open Alarm
Refrigerator or freezer door left open too long
What This Means
The door open alarm activates when a door has remained open beyond the permitted time limit — typically 1–2 minutes depending on the model. This is an informational alert to prevent unnecessary temperature rise and energy waste. On Gaggenau column refrigerators, the alarm is audible and the display will indicate which compartment door is open.
Common Causes
- Door left open during loading, cleaning, or rearranging contents
- Item protruding from a shelf preventing full door closure
- Door seal (gasket) worn — door not staying firmly shut
- Appliance not level — door swinging open by gravity
What You Can Try
Close the door — the alarm clears automatically. If the alarm recurs frequently when the door appears closed, inspect the door gasket for tears or debris. Perform the paper slip test: close the door on a sheet of paper — it should grip firmly all the way around the seal. Use the adjustable leveling feet to tilt the appliance slightly backward so doors self-close by gravity. Wipe the gasket with warm water and mild soap to restore flexibility and sealing.
NO
COOL
COOL
Refrigerator Not Cooling
No fault code displayed — component diagnosis required
What This Means
Gaggenau refrigerators may lose cooling without displaying a specific error code. The most common underlying causes are dirty condenser coils (reducing heat dissipation efficiency), a frosted-over evaporator (blocked airflow), a failed condenser fan, or a compressor fault. Gaggenau's column refrigerators require periodic condenser coil cleaning at the base grille.
Common Causes
- Condenser coils dirty — debris reducing heat dissipation efficiency significantly
- Evaporator coils frosted over — airflow blocked (defrost system fault)
- Condenser fan motor failed — heat building up around the compressor
- Compressor failed or refrigerant leak — total loss of cooling capacity
- Door seal compromised — warm air continuously entering and overloading the system
What You Can Try
Check the condenser coils at the base of the unit — clean any dust buildup with a vacuum brush. Verify the ventilation openings at the rear are unobstructed. If the refrigerator section is warm but the freezer is cold, the evaporator may be frosted over — perform a manual defrost (unplug for 24 hours, doors open). If neither section cools after cleaning and defrosting, compressor or refrigerant diagnosis by a licensed technician is required.
ICE
FAULT
FAULT
Ice Maker Not Working
Ice production stopped — water supply, temperature, or mechanical fault
What This Means
Gaggenau refrigerators with integrated ice makers frequently experience ice production issues. The ice maker requires freezer temperatures between 0°F and 5°F (-18°C to -15°C) to operate correctly. Above 10°F (-12°C), ice production becomes unreliable or stops entirely. Additionally, if there has been a power failure for more than 4 hours, Gaggenau recommends emptying and disconnecting the ice maker before restarting.
Common Causes
- Freezer temperature too high — above -12°C (10°F)
- Ice bin full — harvest sensor stops production automatically
- Water supply to the refrigerator closed or insufficient pressure
- Water supply tube to the ice maker frozen
- Ice cubes blocking the outlet of the ice maker chute
- Ice maker switch accidentally turned off in the settings
What You Can Try
Empty the ice bin and wait 2–3 hours. Confirm the freezer is maintaining 0–5°F (-18 to -15°C). Verify the water supply is connected and the supply valve is fully open. If the water supply tube to the ice maker is suspected of freezing, disconnect it at the bottom of the door and blow air through — if blocked, thaw the line. After a power failure exceeding 4 hours, unplug the ice maker, wait 30 minutes, and reconnect before restarting. If ice production still does not resume, the water inlet valve or ice maker module requires professional diagnosis.
Cooktop & Rangetop
Error codes for Gaggenau Vario induction, gas, and teppan yaki cooktops. Induction models (CI, CX series) are most likely to display error codes. Gas Vario cooktops primarily show ignition-related faults.
F2/K
Cooktop Overheated — Thermal Protection Activated
Electronics too hot — wait for cooling, then touch any control to clear
What This Means
F2 on a Gaggenau cooktop (or "K" on some hob models) means the cooking zone electronics have overheated and the thermal protection system has switched the zone off. Per official Gaggenau documentation: remove pans from the cooking zones. F2/K disappears from the display when the indicator is acknowledged (by touching any control panel symbol) and when the cooking zones have cooled sufficiently.
Common Causes
- Extended high-power cooking on multiple zones simultaneously
- Cabinet cutout beneath the cooktop restricting ventilation
- Cookware too small for the zone — concentrated heat
- Very high ambient kitchen temperature during heavy cooking
What You Can Try
Remove all pans from the cooking zones immediately. Wait 5–10 minutes for the electronics to cool. Touch any control panel symbol — F2 or K will disappear once the zone has cooled sufficiently. You may then continue cooking. If F2 recurs at normal cooking levels, verify the cabinet cutout dimensions and ventilation clearances match Gaggenau's installation specifications.
ERR E
Cooking Zone Electronics Fault
Faulty electronics in a cooking zone — reset required
What This Means
An "E" displayed next to a cooking zone on a Gaggenau Vario cooktop indicates the zone's electronics have developed a fault. Per official documentation: switch the cooktop off and, after a few minutes, switch it on again using the household fuse or circuit breaker (full reset). If the "E" reappears after the reset, disconnect from power and contact Gaggenau after-sales service — the zone's control module has failed and requires replacement.
Common Causes
- Zone control module failed — component fault within the induction electronics
- Power surge damaging the zone's IGBT inverter
- Moisture infiltration into the cooktop electronics
What You Can Try
Switch off the cooktop using the household fuse or circuit breaker. Wait 2–3 minutes. Restore power. If the "E" does not reappear, a transient glitch was cleared. If "E" returns on the same zone, disconnect the cooktop from power and contact Gaggenau customer service — quote the exact zone position (front-left, rear-right etc.) to assist the technician in identifying the module.
AUTO
OFF
OFF
Safety Auto-Shutoff Activated
Zone in constant operation too long — safety deactivation triggered
What This Means
Gaggenau cooktops include a safety auto-shutoff that deactivates a cooking zone if it has been in constant operation at the same power level for too long without any user interaction. This prevents the cooktop from running unattended indefinitely. Per official documentation, the zone can be switched on again immediately after the shutoff — it does not indicate a fault.
Common Causes
- Zone left on at a constant power setting for the maximum permitted duration (varies by power level)
- Main switch touched accidentally while the cooktop was in use
What You Can Try
Switch the affected cooking zone back on — it can be restarted immediately. If the auto-shutoff is triggering too frequently during normal long-cooking tasks (e.g. slow simmering), adjust the power level slightly or use the Keep Warm setting, which the safety system treats differently from active cooking zones.
NO
POT
POT
No Induction-Compatible Cookware Detected
Non-ferromagnetic pan or cookware too small for the zone
What This Means
On Gaggenau induction cooktops (CI, CX series), a "no pot" indicator or display flash means the zone is active but cannot detect induction-compatible cookware. Induction cooking requires ferromagnetic pans — the zone sensor tests for magnetic response before activating the induction coil. This is not a fault — it is a safety feature.
Common Causes
- Non-induction cookware used — aluminum, copper, glass, or ceramic pans
- Pan placed too far off-center or on a zone boundary
- Pan base diameter too small for the selected zone
- Pan base warped — not making full contact with the cooktop surface
What You Can Try
Perform the magnet test: hold a magnet to the base of your pan — if it sticks firmly, the pan is induction-compatible. Center the pan on the zone. For the Gaggenau Vario induction system, ensure the pan diameter is appropriate for the selected zone or use the FlexInduction zone which accommodates irregular pan positions and sizes.
Coffee Machine
Fault codes and common issues for Gaggenau CM 250, CM 251 built-in coffee machine models. Gaggenau's built-in espresso system requires regular descaling and cleaning to prevent the most common faults.
E003
E303
E303
Appliance Too Hot — Overtemperature Protection
Coffee machine has overheated — switch off and allow to cool
What This Means
E003 or E303 flashing on the display means the appliance temperature has exceeded safe operating limits — the same thermal protection code that appears across the Gaggenau oven and coffee machine platform. Per official Gaggenau documentation for the CM 250: if E003 or E303 flashes, the appliance is too hot. Switch off the appliance and let it cool down before resuming use.
Common Causes
- Multiple consecutive coffee preparations without adequate cooling time
- Ventilation slot around the built-in unit obstructed by cabinet material
- Steam wand used immediately after multiple espresso preparations
What You Can Try
Switch off the coffee machine at the power button. Allow to cool for 15–20 minutes before the next use. Verify the surrounding cabinet installation provides the ventilation clearances specified in the installation manual. If E003/E303 appears during normal use levels, check that the cabinet cutout ventilation slots are not blocked by debris or cabinetry material — the machine must be able to dissipate heat through the front panel vents.
DE-
SCALE
SCALE
Descaling Required
Limescale buildup in the heating system — descale immediately
What This Means
The descaling indicator on the Gaggenau CM 250 means the machine has detected limescale accumulation in its heating element and flow system — based on a calculated usage counter, not a direct sensor. Scale deposits insulate the heating element, reducing efficiency and eventually causing the element to overheat or fail. Running the descaling program when prompted protects the machine's longevity.
Common Causes
- Hard water supply — high mineral content accelerates scale buildup
- Water filter not replaced on schedule — filter no longer softening the water
- Descaling program overdue — counter reached its maximum
What You Can Try
Run the descaling program using Gaggenau-recommended descaling solution — use the brand's own descaler or a certified citric acid-based alternative. Do not use vinegar — it can damage rubber seals in the brewing group. Follow the descaling program steps as described in the CM 250 instruction manual. After descaling, run two full water rinse cycles before brewing coffee. Replace the water filter cartridge if overdue.
CLEAN
ALERT
ALERT
Cleaning Program Due
Brewing group requires cleaning — run the cleaning program
What This Means
The cleaning alert indicates the brewing group has accumulated coffee oil residue that requires the machine's automatic cleaning program. Coffee oils oxidize over time, creating rancid flavors and eventually causing the brewing group to operate sluggishly or jam. The cleaning program uses a cleaning tablet to dissolve and flush out residue.
Common Causes
- Automatic counter based on number of brewing cycles — reached the cleaning interval
What You Can Try
Use Gaggenau-recommended cleaning tablets (or certified Bosch-compatible tablets). Place the tablet in the designated cleaning compartment as described in the CM 250 manual. Initiate the cleaning program from the menu. The cycle takes approximately 20–30 minutes. Do not interrupt the cleaning program mid-cycle. After completion, run one rinse cycle before brewing coffee.
NO
WATER
/ FILL
WATER
/ FILL
Water Tank Empty or Not Detected
Water reservoir not inserted correctly or empty
What This Means
The water alert means either the water tank is empty or the tank is not seated correctly in its housing. The CM 250 uses a water level sensor — if the tank is not in contact with the sensor probe, the machine will display a fill alert even with water in the tank.
Common Causes
- Water tank empty — needs refilling
- Tank not inserted fully — not making contact with the water sensor
- Water sensor fault — tank is full but not detected
What You Can Try
Refill the water tank with fresh cold water. Remove and firmly reinsert the tank — push until you feel it seat securely against the rear contacts. Do not use carbonated water or flavored water — only fresh, potable tap or filtered water. If the tank is full and correctly seated but the alert persists, the water sensor or its contact points may require professional cleaning or replacement.
Warming Drawer
Fault diagnostics for Gaggenau WS 450, WS 461, and integrated Vario warming drawer models. Warming drawers are simple appliances — most faults relate to the heating element, thermostat, or control electronics.
E003
E303
E303
Appliance Overheated
Warming drawer temperature exceeded safe limit — power off and cool
What This Means
E003 or E303 on a Gaggenau warming drawer indicates the appliance temperature has exceeded its safe operating threshold — the thermal protection system has activated. Per Gaggenau documentation across their appliance platform, these codes consistently mean the same thing: the appliance is too hot. Switch off and allow cooling before resuming use.
Common Causes
- Temperature set too high for an extended period with the drawer fully loaded
- Ventilation openings around the installed drawer obstructed
- Drawer used as a food storage unit at maximum temperature for many hours continuously
- Thermostat or temperature sensor fault — heating element running at full power continuously
What You Can Try
Switch off the warming drawer immediately. Allow it to cool for 20–30 minutes before restarting. Verify ventilation clearances around the installed drawer meet Gaggenau's installation specifications. If E003/E303 returns at normal temperature settings, the thermostat or temperature sensor requires professional diagnosis — an uncontrolled heating element is a potential fire hazard.
NO
HEAT
HEAT
Warming Drawer Not Heating
Drawer runs but does not produce heat
What This Means
If the warming drawer powers on and the display/controls function normally, but the drawer interior does not heat up, the heating element or its associated thermostat has failed. This is the most common mechanical fault in warming drawers and requires professional replacement of the heating element or control thermostat.
Common Causes
- Heating element failed — open circuit after thermal cycling
- Thermal fuse blown — one-use safety fuse has tripped from an overtemperature event
- Temperature thermostat failed — not closing the heating circuit
- Control board relay failed — not sending power to the heating element
What You Can Try
Power cycle the drawer for 2 minutes. If the drawer still does not heat at any temperature setting, the heating element or thermal fuse requires professional diagnosis. A blown thermal fuse (from a prior overtemperature event) is a common and inexpensive repair — it requires disassembly of the drawer's rear panel to access.
CTRL
ERR
ERR
Control Panel / Electronics Fault
Display or control board not responding correctly
What This Means
Control panel errors on Gaggenau warming drawers manifest as unresponsive touch controls, erratic display behavior, or the drawer not responding to temperature setting changes. These electronic faults may result from moisture infiltration near the control strip or a failed control board component.
Common Causes
- Touch control strip contaminated by spills or condensation
- Child lock activated — controls appear unresponsive
- Control board component failure — power surge or aging
What You Can Try
Check if the child lock is activated — most Gaggenau warming drawers use a long-press of a specific button to toggle the child lock. Clean the control strip gently with a soft dry cloth. Power cycle at the wall for 5 minutes. If controls remain unresponsive after power cycle and child lock is confirmed off, the control board or touch strip requires professional replacement.
Oven
Error codes for Gaggenau BO, BS, BX, and EB series wall ovens and steam ovens. Gaggenau uses a consistent E-code system across its oven range — E003/E115 are the most common, and most are self-resolvable by cooling and restarting.
E003
E303+
E303+
Oven Overtemperature — Thermal Protection Activated
Oven too hot — switch off and allow to cool before resuming
What This Means
E003, E303, E115, or E215 flashing on the Gaggenau oven display all indicate the same condition: the appliance is too hot. This is documented directly in Gaggenau's official instruction manuals for BO, BS, BX, and EB series ovens. The thermal protection system has activated — the oven will not heat further until it cools. E003/E303 and E115/E215 are the E-code equivalents appearing on different oven generations with the same meaning.
Common Causes
- Cooling fan failed — heat not being extracted from the oven cavity during or after a baking cycle
- Oven used for consecutive high-temperature cycles without cooling time
- Pyrolytic self-clean cycle combined with very high ambient temperature
- Oven cavity ventilation slots at rear blocked — heat build-up in the electronics
What You Can Try
Per official Gaggenau documentation: switch off the appliance (including the temperature knob) and let it cool down. The oven's cooling fan should continue running after switch-off — listen for it. If the fan is not audible after switching off, the cooling fan may have failed, which would explain the overtemperature event. Once fully cooled, switch the oven back on. If E003/E115 returns within a normal cooking cycle, the cooling fan (E318 code) or its wiring requires professional inspection.
E104
Temperature Sensor Short Circuit
Oven temperature probe has a short circuit — oven switched off
What This Means
E104 on a Gaggenau oven indicates a short circuit in the PT500 oven temperature sensor cable. Per Gaggenau service documentation, this code means the PT500 probe or its wiring has developed an internal short — two conductors in the sensor circuit are touching. This causes the control module to read an incorrect (typically very high) resistance value, triggering the overtemperature protection even if the oven is not actually hot. The oven is switched off automatically for safety.
Common Causes
- PT500 sensor wiring insulation melted or damaged — conductors shorting together
- PT500 sensor itself internally failed (short circuit within the probe element)
- Wire harness pinched during a repair or oven rack adjustment
What You Can Try
Switch off the oven temperature knob. Allow the oven to cool completely. Inspect the temperature probe (a thin metal rod protruding from the upper rear wall of the oven cavity) and its visible wiring for burn damage. Do not use the oven while E104 is present — a shorted temperature sensor can cause the oven to heat uncontrolled. Professional sensor replacement and wiring inspection is required. When booking service, specify the exact code "E104" — this allows the technician to identify the PT500 sensor part number for your specific model.
E101
Temperature Sensor Overload / Open Circuit
PT500 sensor cable break or sensor overloaded — oven cannot regulate temperature
What This Means
E101 indicates the PT500 oven temperature sensor has either an open circuit (broken wire) or is overloaded — the signal from the probe is outside the valid measurement range. Without a valid temperature signal, the control board cannot regulate oven temperature. Baking or roasting without E101 resolved risks both product quality and appliance safety.
Common Causes
- PT500 sensor wire broken — cable fatigue from repeated thermal expansion/contraction
- Corroded or loose connector at the control module (X1 connection)
- Sensor damaged by a rack or accessory making contact with it
What You Can Try
Power off the oven. Inspect the temperature sensor probe in the oven cavity for physical damage. Check that no oven rack or accessory is touching or pressing against the probe. If the probe looks intact, the wire connection at the control module may be loose — this requires a technician to access. Professional PT500 replacement is the standard resolution for persistent E101.
E011
Control Button Stuck or Pressed Too Long
A control button is stuck or continuously activated — clean panel or replace
What This Means
E011 on a Gaggenau oven indicates a control button has been pressed for too long or is stuck in a depressed state — the control module interprets this as an unintended continuous input. The oven's operation may be disrupted or the display may become unresponsive. This code appears across Gaggenau's oven range (BO, BS, BX series) when the touch control system detects a persistent button activation.
Common Causes
- Grease or food residue infiltrating under a touch control button
- Liquid spilled on the control panel
- Membrane keypad or touch strip physically damaged or delaminating
- Control panel front glass not seated properly — pressing on controls inadvertently
What You Can Try
Clean the control panel carefully with a soft cloth and mild cleaning solution — pay particular attention to the edges of each button/touch area where grease accumulates. Power off the oven for 5 minutes to reset the control module. If E011 returns, inspect the front glass panel — per Gaggenau documentation, an improperly seated front glass can activate buttons inadvertently. If cleaning and panel seating do not resolve E011, the control strip or membrane keypad requires professional replacement.
E318
Cooling Fan Failure
Oven cooling fan has stopped — overheating risk
What This Means
E318 indicates the oven's cooling fan has failed. The cooling fan runs during and after cooking cycles to extract heat from the oven electronics and cavity. Without it, the electronics and surrounding cabinetry will overheat — E003/E115 overtemperature codes will follow quickly if the oven is used with a failed cooling fan. E318 is an important early warning code that should be addressed before further oven use.
Common Causes
- Fan motor bearing failure — fan stops or becomes very noisy before failing
- Fan blade blocked by debris or a foreign object falling behind the oven
- Wiring fault between the control board and the fan motor
What You Can Try
Do not use the oven while E318 is displayed — overheating of electronics and surrounding cabinetry is a significant risk. Power off and listen for whether the cooling fan is audible — if the fan is silent both during and after use, it has failed. Contact Gaggenau service — quote E318 specifically. The cooling fan is accessed from the rear of the oven cavity and requires professional replacement.
E005
E305
E305
Communication Error Between Electronic Modules
Control boards cannot communicate — wiring or board fault
What This Means
E005 or E305 indicates a communication error between the oven's electronic modules — the main control board and the display/user interface board (or between multiple heating zone boards on Gaggenau combination ovens). This prevents the oven from operating correctly as the modules cannot share temperature, setting, or safety data.
Common Causes
- Wiring harness between the main board and display module loose or damaged
- Power surge corrupting one or both boards
- Failed component on the main control board or display module
What You Can Try
Power cycle at the wall for 5 minutes. If E005/E305 clears and does not return, a transient communication glitch occurred. If E005/E305 returns consistently, professional board-level diagnosis is required. Note the exact code (E005 vs E305) when booking service — E305 is specific to the secondary module on dual-oven configurations.
E703
E711
E711
Lift Door / Door Contact Fault
E703 = door contact not working; E711 = lift door button stuck
What This Means
E703 indicates the door contact switch is not working — the oven cannot confirm whether the door is open or closed. This is a safety-critical fault on Gaggenau ovens with lift doors (the motorized vertical-lift door system on BS/BX series models). E711 indicates a lift door button has been pressed too long or is stuck — or the front glass panel is not seated properly, causing inadvertent contact with the door control.
Common Causes
- E703: Door contact switch worn or failed; door hinge out of alignment
- E711: Front glass panel not seated in its frame; lift door button physically stuck; grease contamination on the lift button
What You Can Try
For E711: Clean the lift door button area. Check that the front glass is fully and evenly seated in its frame — lift doors require precise glass positioning. For E703: Power cycle and test the door open/close response. If the door contact is not detected, the door switch requires professional replacement. Do not force the lift door if it appears to be behaving erratically.