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Neff • Central Diagnostic Dictionary

195 Verified Codes in Database

Neff Error Codes & Diagnostics

Access our premium database of error codes, common faults, and professional repair solutions for Neff appliances.

Luxury front-loading washing machine in brushed titanium with illuminated dark glass drum

CodeAppliancesFault / DiagnosticsRepair InstructionsAction

AL

Refrigerator / Freezer

Refrigeration Compressor, Defrost Heater & PTC Relay

Neff N 70 / N 90 FreshSafe 3 & NoFrost built-in refrigerator: High temperature cavity alarm AL; freezer temperature has risen above critical threshold of -9°C for over 60 minutes.

On Neff refrigerators: Door left ajar for extended period, prolonged household power outage, loss of refrigerant gas charge (leak), or compressor shutdown.

Press Alarm Silence key to mute buzzer. Ensure door seals adhere tightly with no gaps. Check compressor vibration and condenser warmth at rear. Press and hold Alarm symbol for 5 seconds until acoustic chime stops and display returns to normal temperature.

d0

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Showroom demo mode active d0; displays and touch sliders illuminate and respond but power elements do not heat.

On Neff hobs: Retail showroom test routine enabled during display installation or accidental secret touch key combo entered by user.

To exit demo mode: Turn hob off, press and hold Child Lock and Zone Boost keys together for 5 seconds until double chime sounds. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d1

Hob / Cooktop

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Front left cooking zone demo test locked d1; front left inverter locked in display simulation loop.

On Neff hobs: Zone-specific demo flag set in EEPROM non-volatile memory during factory automated board verification.

Access engineering service menu by holding On/Off and Zone 1 select key for 4 seconds after power up, reset zone flags to 0. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d2

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Rear left cooking zone demo test locked d2; rear left induction channel disabled in demo simulation mode.

On Neff hobs: Firmware zone configuration register uninitialized for rear left induction resonant circuit.

Perform complete cold reset via main breaker (cut power for 3 minutes). If d2 persists, execute master service NVRAM clear. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d3

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Center / rear right cooking zone demo test locked d3; zone controller in exhibition simulation state.

On Neff hobs: Interrupted factory programming script or uncalibrated expansion coil bridging relay.

Restore factory configuration via touch sequence: Power On -> hold Timer and Key for 6s -> select parameter 'd3' -> set value to 0. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d4

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Front right cooking zone demo test locked d4; front right power stage disabled in store demonstration mode.

On Neff hobs: Retail demonstrator profile activated across right cooking zone power bus channel.

Exit demo mode using the global deactivation sequence (hold Lock + Booster for 5 seconds), then test front right zone heating with pan. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d5

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: FlexInduction bridging relay check state d5; induction coil coupling relays engaged in diagnostic cycle.

On Neff hobs: Diagnostic check mode triggered by power fluctuation during multi-zone FlexInduction bridge activation.

Cycle mains power at breaker for 30 seconds. On boot, do not bridge zones for the first 15 seconds to allow relay calibration. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d6

Hob / Cooktop

Drive Motor, Inverter & Tachometer Sensor

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Forced high-speed cooling fan test mode active d6; fan runs continuously at maximum RPM for thermal evaluation.

On Neff hobs: Factory thermal endurance diagnostic program initiated, or stuck tachometer diagnostic override bit.

Turn hob off. Press and hold Zone 2 and Zone 4 selection buttons simultaneously for 4 seconds until the display beeps to terminate test. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d7

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Mains voltage telemetry feedback display d7; digital voltmeter diagnostic screen showing live input AC voltage.

On Neff hobs: Field technician diagnostic screen opened for grid stability evaluation or neutral wire check.

Press the Power (On/Off) key once to exit the telemetry screen. Compare indicated voltage with calibrated handheld DMM reading. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d8

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Touch slider sensitivity calibration mode d8; user interface enters capacitive touch gain tuning display.

On Neff hobs: Replacement glass thickness adjustment routine initiated or capacitive drift compensation cycle running.

Do not touch glass surface for 30 seconds to allow calibration to finish automatically. If d8 remains, press Timer key to exit. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

d9

Hob / Cooktop

Electronic Control Board (PCB) & Bus Communications

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Factory end-of-line (EOL) test loop active d9; automated manufacturing test routine repeating test steps.

On Neff hobs: Test jumper left on service header during assembly or incomplete factory finalization flash write.

De-energize cooktop. Remove glass top and inspect service header on main power board; remove test jumper. Power cycle appliance. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

E0

Hob / Cooktop

Electronic Control Board (PCB) & Bus Communications

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Control unit configuration error E0; touch module EEPROM parameter mismatch prevents zone activation.

On Neff hobs: Corrupted firmware memory, voltage spike during power surge, or incompatible replacement touch user interface.

Disconnect mains power for 60 seconds. If E0 persists, perform factory EOL reconfiguration or replace touch PCB. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

E01

Dishwasher

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Chef 70° & DoorOpen Assist dishwasher: Critical power module failure E01; heating circuit relay contacts open or welded on the main control board.

On Neff dishwashers: Relay driver triac damaged by heater inrush current, high contact resistance, or cold solder joints on the power board.

Disconnect mains power. Inspect power module in bottom right base. Measure heater resistance (nominal 19–22 Ω). Replace power module if relay is burnt. Press and hold Start button for 3 seconds until '0:01' is displayed, let appliance evacuate sump completely, then switch off.

E01

Tumble Dryer

General System & Mechanical Integration

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Process air circulation blockage E01; lint filter or air channel clogged, stopping drying cycle.

On Neff tumble dryers: Thick lint layer on door filter mesh, clogged lower heat exchanger condenser, or air duct blocked by fluff.

Remove double door lint filter and wash under running warm water. Vacuum lower condenser chamber. Ensure air path is completely clear. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E01

Refrigerator / Freezer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 FreshSafe 3 & NoFrost built-in refrigerator: Fridge compartment temperature sensor failure E01; fresh food zone NTC sensor circuit open or shorted.

On Neff refrigerators: Defective cabinet wall NTC thermistor, moisture ingress into sensor housing, or disconnected wiring harness.

Measure NTC resistance at power PCB: nominal ~5.0 kΩ at +25°C, ~16.3 kΩ at 0°C, and ~13.3 kΩ at +4°C. Replace sensor or install repair probe kit. Press and hold Alarm symbol for 5 seconds until acoustic chime stops and display returns to normal temperature.

E1

Hob / Cooktop

Electronic Control Board (PCB) & Bus Communications

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Internal bus communication failure E1; user interface loses serial data link with induction power generator.

On Neff hobs: Dislodged multi-pin ribbon cable, oxidized connector pins, or dead 5V DC low-voltage rail on power module.

Check flat ribbon cable continuity between UI and power PCB (< 0.2 Ω). Verify stable 5.0V DC and 12.0V DC bus rails. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

E02

Dishwasher

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Chef 70° & DoorOpen Assist dishwasher: Auxiliary heating relay malfunction E02; secondary safety relay on power PCB fails to close during water heating phase.

On Neff dishwashers: Defective auxiliary PCB relay coil, loose connector terminal on heater harness, or open circuit in heater safety loop.

Check wiring continuity between control board and heat pump terminals. Verify 12V DC coil activation voltage on PCB relay during wash cycle. Press and hold Start button for 3 seconds until '0:01' is displayed, let appliance evacuate sump completely, then switch off.

E02

Refrigerator / Freezer

Refrigeration Compressor, Defrost Heater & PTC Relay

Neff N 70 / N 90 FreshSafe 3 & NoFrost built-in refrigerator: Evaporator defrost temperature sensor fault E02; defrost termination NTC sensor out of range or open circuit.

On Neff refrigerators: Thermal fatigue on evaporator copper tube clip sensor, frost ice buildup crushing probe wire, or internal resistor drift.

Inspect evaporator coil behind freezer back wall. Measure defrost NTC resistance: ~5.0 kΩ at +25°C, ~16.3 kΩ at 0°C, and ~32.5 kΩ at -18°C. Replace clip probe. Press and hold Alarm symbol for 5 seconds until acoustic chime stops and display returns to normal temperature.

E2

Hob / Cooktop

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Induction coil temperature sensor over-temperature E2; coil NTC thermistor registers > 240°C or short circuit.

On Neff hobs: Empty pan heated on boost level, failed thermal paste on center coil NTC, or defective thermistor element.

Allow cooktop to cool. Measure coil center NTC resistance (~100 kΩ at 25°C, dropping to ~10 kΩ when warm). Replace sensor if open/shorted. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

E03

Dishwasher

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Chef 70° & DoorOpen Assist dishwasher: Auxiliary heating relay circuit discrepancy E03; microprocessor detects inconsistent contact state across heating relays.

On Neff dishwashers: Welded relay contacts, leakage current to ground on heating element (> 10 mA), or faulty voltage sensing resistors on PCB.

Measure heating element insulation resistance to ground (must be > 20 MΩ with 500V megohmmeter). Inspect PCB for burnt traces or replace power board. Press and hold Start button for 3 seconds until '0:01' is displayed, let appliance evacuate sump completely, then switch off.

E03

Tumble Dryer

Heating Element, Thermostat & Safety Fuse

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Maximum drying cycle time limit exceeded E03; laundry remains damp after programmed 4-hour cycle timeout.

On Neff tumble dryers: Weak heating (heat pump refrigerant leak or burnt heating element), wet laundry poorly spun, or room ambient temperature < 5°C.

Ensure laundry is spun at min 1200 RPM in washer. Check heater resistance (~22–26 Ω) or compressor operation. Operate in room > 10°C. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E03

Refrigerator / Freezer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 FreshSafe 3 & NoFrost built-in refrigerator: Chiller / VitaFresh compartment sensor fault E03; meat/fish preservation drawer NTC registers invalid readings.

On Neff refrigerators: Pinched sensor cable behind drawer sliding rails, moisture accumulation on connector, or open thermistor bead.

Remove 0°C drawer. Inspect sensor clip and wiring harness. Test NTC resistance (~5.0 kΩ at +25°C, ~16.3 kΩ at 0°C). Replace sensor assembly if open. Press and hold Alarm symbol for 5 seconds until acoustic chime stops and display returns to normal temperature.

E3

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Mains over-voltage detected E3; supply voltage on phase L1/L2 exceeds safe threshold of 275V AC.

On Neff hobs: Floating or disconnected neutral line in household junction box, utility grid surge, or high line impedance.

Immediately disconnect hob. Measure AC voltage between each Phase (L1, L2) and Neutral (N); must be 230V AC (±10%). Never operate with floating neutral. Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

E04

Dishwasher

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Chef 70° & DoorOpen Assist dishwasher: Water switch diverter position feedback failure E04; upper/lower spray arm alternator disc position unknown.

On Neff dishwashers: Defective microswitch inside water diverter, stripped plastic gears on synchronous motor, or debris jammed in diverter disc.

Access water diverter assembly beneath sump. Test synchronous motor winding resistance (nominal 4.0–4.5 kΩ). Check microswitch continuity when rotating. Press and hold Start button for 3 seconds until '0:01' is displayed, let appliance evacuate sump completely, then switch off.

E04

Refrigerator / Freezer

NTC Temperature Sensor & Thermistor

Neff N 70 / N 90 FreshSafe 3 & NoFrost built-in refrigerator: Ambient room temperature sensor fault E04; external temperature NTC located at top hinge cover disconnected or open.

On Neff refrigerators: Pinched wiring loom during door reversal procedure, dislodged plug in upper hinge cover, or defective ambient thermistor.

Unclip upper door hinge cover. Inspect wiring for cuts or crushing. Measure ambient NTC resistance (nominal ~5.0 kΩ at +25°C, ~6.2 kΩ at +20°C). Press and hold Alarm symbol for 5 seconds until acoustic chime stops and display returns to normal temperature.

E4

Hob / Cooktop

General System & Mechanical Integration

Neff N 70 / N 90 TwistPad® / TwistPad Fire® & FlexInduction hob: Mains under-voltage detected E4; AC line voltage drops below 185V AC under load during active heating.

On Neff hobs: Loose terminal screw on terminal block, undersized house wiring cross-section (< 2.5 mm²), or severe grid voltage drop.

Inspect mains terminal block connections for loose clamping screws or scorching. Measure supply voltage under load (> 207V AC required). Remove TwistPad magnetic dial, clean glass surface, replace TwistPad on red illuminated ring, hold Key symbol for 4 seconds.

E005

Oven / Microwave

Heating Element, Thermostat & Safety Fuse

Neff N 50 / N 70 / N 90 Slide&Hide® & CircoTherm® Pyrolytic Oven with ShiftControl: Power interlock safety relay failure E005; safety relay on power PCB fails to close power circuit to heating elements.

On Neff ovens: Burnt relay contacts, failed 12V DC coil driver transistor, or open circuit in door interlock microswitch safety chain.

Disconnect mains power. Measure resistance of relay coil on power PCB (nominal ~360–420 Ω). Test door interlock microswitch contacts (< 0.5 Ω). Turn oven off, hold 'i' Info and Clock icons simultaneously on ShiftControl panel for 4 seconds, or cycle mains breaker.

E05

Dishwasher

Drive Motor, Inverter & Tachometer Sensor

Neff N 50 / N 70 / N 90 Chef 70° & DoorOpen Assist dishwasher: Water switch motor triac short-circuit E05; electronic controller cannot regulate water diverter valve motor.

On Neff dishwashers: Short-circuit in synchronous diverter motor winding, water ingress on motor connector terminals, or blown SMD triac on main PCB.

Inspect diverter motor for water traces. Measure motor coil resistance (> 3.5 kΩ; shorted if < 100 Ω). Replace motor and repair/replace power module. Press and hold Start button for 3 seconds until '0:01' is displayed, let appliance evacuate sump completely, then switch off.

E05

Tumble Dryer

Drainage System & Drain Pump

Neff N 70 / N 90 Heat Pump Condenser tumble dryer: Condensate drain pump triac / circuit failure E05; water accumulated during drying cannot be pumped into collection tank.

On Neff tumble dryers: Open coil in condensate lift pump, triac driver destroyed on power PCB, or fluff jamming miniature pump impeller.

Access condensate pump in lower rear. Measure coil resistance (nominal ~140–160 Ω). Clear fluff from sump chamber. Test pump with direct 230V feed. Turn dial to position 6, hold Low Heat/Delicates button, turn dial to position 7, release and turn back to Off.

E05

Refrigerator / Freezer

Refrigeration Compressor, Defrost Heater & PTC Relay

Neff N 70 / N 90 FreshSafe 3 & NoFrost built-in refrigerator: Freezer compartment air temperature sensor fault E05; freezer interior cavity NTC sensor circuit open or shorted.

On Neff refrigerators: Defective freezer air NTC behind side air duct, severe ice encasement causing wire breakage, or failed connector.

Defrost appliance if frozen. Measure freezer air NTC: ~5.0 kΩ at +25°C, ~16.3 kΩ at 0°C, and ~32.5 kΩ at -18°C. Replace sensor with repair kit. Press and hold Alarm symbol for 5 seconds until acoustic chime stops and display returns to normal temperature.

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Neff — Complete Error Code Catalog

158 Verified Error Codes

Server-side index of all verified manufacturer error codes for technicians and automated crawlers.

Dishwasher38

E01 E02 E03 E04 E05 E06 E07 E08 E09 E10 E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E24 E25 E26 E27 E28 E29 E30 E31 E3000 E3100 E3200 E6101 E6900 E9001 E9210

Washing Machine48

E34 E35 E37 E38 E42 E43 E44 E47 E48 E49 E50 E57 E59 E60 E61 E67 F16 F17 F18 F19 F20 F21 F22 F23 F25 F26 F27 F28 F29 F31 F34 F35 F36 F37 F38 F42 F43 F44 F47 F48 F49 F50 F57 F59 F60 F61 F63 F67

Tumble Dryer16

E32 E36 E51 E52 E53 E54 E55 E56 E63 E71 E72 E73 E74 E75 E89 E90

Oven / Microwave19

E005 E011 E101 E104 E106 E115 E305 E310 E395 E396 E845 E5116 E5122 Er1 Er2 Er4 Er6 Er8 Key Symbol

Hob / Cooktop36

d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 E0513 E7015 E8207 F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 U1 U2 U3

Refrigerator / Freezer1

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