Access our premium database of error codes, common faults, and professional repair solutions for Bosch appliances.
Bosch Serie 4 / Serie 6 / Serie 8 VitaFresh pro 0°C NoFrost Refrigerator: High temperature cavity alarm AL; freezer temperature has risen above critical threshold of -9°C for over 60 minutes.
On Bosch refrigerators: Door left ajar for extended period, prolonged household power...
Press Alarm Silence key to mute buzzer. Ensure door seals adhere tightly with no gaps....
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Showroom demo mode active d0; displays and touch sliders illuminate and respond but power elements do not heat.
On Bosch hobs: Retail showroom test routine enabled during display installation or...
To exit demo mode: Turn hob off, press and hold Child Lock and Zone Boost keys together for...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Front left cooking zone demo test locked d1; front left inverter locked in display simulation loop.
On Bosch hobs: Zone-specific demo flag set in EEPROM non-volatile memory during factory...
Access engineering service menu by holding On/Off and Zone 1 select key for 4 seconds after...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Rear left cooking zone demo test locked d2; rear left induction channel disabled in demo simulation mode.
On Bosch hobs: Firmware zone configuration register uninitialized for rear left induction...
Perform complete cold reset via main breaker (cut power for 3 minutes). If d2 persists,...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Center / rear right cooking zone demo test locked d3; zone controller in exhibition simulation state.
On Bosch hobs: Interrupted factory programming script or uncalibrated expansion coil...
Restore factory configuration via touch sequence: Power On -> hold Timer and Key for 6s ->...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Front right cooking zone demo test locked d4; front right power stage disabled in store demonstration mode.
On Bosch hobs: Retail demonstrator profile activated across right cooking zone power bus...
Exit demo mode using the global deactivation sequence (hold Lock + Booster for 5 seconds),...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: FlexInduction bridging relay check state d5; induction coil coupling relays engaged in diagnostic cycle.
On Bosch hobs: Diagnostic check mode triggered by power fluctuation during multi-zone...
Cycle mains power at breaker for 30 seconds. On boot, do not bridge zones for the first 15...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Forced high-speed cooling fan test mode active d6; fan runs continuously at maximum RPM for thermal evaluation.
On Bosch hobs: Factory thermal endurance diagnostic program initiated, or stuck tachometer...
Turn hob off. Press and hold Zone 2 and Zone 4 selection buttons simultaneously for 4...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Mains voltage telemetry feedback display d7; digital voltmeter diagnostic screen showing live input AC voltage.
On Bosch hobs: Field technician diagnostic screen opened for grid stability evaluation or...
Press the Power (On/Off) key once to exit the telemetry screen. Compare indicated voltage...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Touch slider sensitivity calibration mode d8; user interface enters capacitive touch gain tuning display.
On Bosch hobs: Replacement glass thickness adjustment routine initiated or capacitive drift...
Do not touch glass surface for 30 seconds to allow calibration to finish automatically. If...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Factory end-of-line (EOL) test loop active d9; automated manufacturing test routine repeating test steps.
On Bosch hobs: Test jumper left on service header during assembly or incomplete factory...
De-energize cooktop. Remove glass top and inspect service header on main power board;...
E blinks alternately with the cooking level/residual heat, or EEEE blinks in all displays. A signal sounds.
Continuous activation of a sensor (> 5 seconds) due to objects placed on it, spilled liquid...
Remove the cause (objects, liquid), then press any button to clear the display. Customer...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Control unit configuration error E0; touch module EEPROM parameter mismatch prevents zone activation.
On Bosch hobs: Corrupted firmware memory, voltage spike during power surge, or incompatible...
Disconnect mains power for 60 seconds. If E0 persists, perform factory EOL reconfiguration...
Display indicates E000 during service test steps; no active fault present in control memory.
Factory service mode diagnostic steps 8 and 9 display E000 to confirm complete lack of...
Informational diagnostic indication. No repair required. Press Start/Stop to advance to...
Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Critical power module failure E01; heating circuit relay contacts open or welded on the main control board.
On Bosch dishwashers: Relay driver triac damaged by heater inrush current, high contact...
Disconnect mains power. Inspect power module in bottom right base. Measure heater...
Bosch Serie 6 / Serie 8 / HomeProfessional AutoClean SelfCleaning Condenser: Process air circulation blockage E01; lint filter or air channel clogged, stopping drying cycle.
On Bosch tumble dryers: Thick lint layer on door filter mesh, clogged lower heat exchanger...
Remove double door lint filter and wash under running warm water. Vacuum lower condenser...
Bosch Serie 4 / Serie 6 / Serie 8 VitaFresh pro 0°C NoFrost Refrigerator: Fridge compartment temperature sensor failure E01; fresh food zone NTC sensor circuit open or shorted.
On Bosch refrigerators: Defective cabinet wall NTC thermistor, moisture ingress into sensor...
Measure NTC resistance at power PCB: nominal ~5.0 kΩ at +25°C, ~16.3 kΩ at 0°C, and ~13.3...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Internal bus communication failure E1; user interface loses serial data link with induction power generator.
On Bosch hobs: Dislodged multi-pin ribbon cable, oxidized connector pins, or dead 5V DC...
Check flat ribbon cable continuity between UI and power PCB (< 0.2 Ω). Verify stable 5.0V...
Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Auxiliary heating relay malfunction E02; secondary safety relay on power PCB fails to close during water heating phase.
On Bosch dishwashers: Defective auxiliary PCB relay coil, loose connector terminal on...
Check wiring continuity between control board and heat pump terminals. Verify 12V DC coil...
Bosch Serie 4 / Serie 6 / Serie 8 VitaFresh pro 0°C NoFrost Refrigerator: Evaporator defrost temperature sensor fault E02; defrost termination NTC sensor out of range or open circuit.
On Bosch refrigerators: Thermal fatigue on evaporator copper tube clip sensor, frost ice...
Inspect evaporator coil behind freezer back wall. Measure defrost NTC resistance: ~5.0 kΩ...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Induction coil temperature sensor over-temperature E2; coil NTC thermistor registers > 240°C or short circuit.
On Bosch hobs: Empty pan heated on boost level, failed thermal paste on center coil NTC, or...
Allow cooktop to cool. Measure coil center NTC resistance (~100 kΩ at 25°C, dropping to ~10...
Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Auxiliary heating relay circuit discrepancy E03; microprocessor detects inconsistent contact state across heating relays.
On Bosch dishwashers: Welded relay contacts, leakage current to ground on heating element...
Measure heating element insulation resistance to ground (must be > 20 MΩ with 500V...
Bosch Serie 6 / Serie 8 / HomeProfessional AutoClean SelfCleaning Condenser: Maximum drying cycle time limit exceeded E03; laundry remains damp after programmed 4-hour cycle timeout.
On Bosch tumble dryers: Weak heating (heat pump refrigerant leak or burnt heating element),...
Ensure laundry is spun at min 1200 RPM in washer. Check heater resistance (~22–26 Ω) or...
Bosch Serie 4 / Serie 6 / Serie 8 VitaFresh pro 0°C NoFrost Refrigerator: Chiller / VitaFresh compartment sensor fault E03; meat/fish preservation drawer NTC registers invalid readings.
On Bosch refrigerators: Pinched sensor cable behind drawer sliding rails, moisture...
Remove 0°C drawer. Inspect sensor clip and wiring harness. Test NTC resistance (~5.0 kΩ at...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Mains over-voltage detected E3; supply voltage on phase L1/L2 exceeds safe threshold of 275V AC.
On Bosch hobs: Floating or disconnected neutral line in household junction box, utility...
Immediately disconnect hob. Measure AC voltage between each Phase (L1, L2) and Neutral (N);...
Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Water switch diverter position feedback failure E04; upper/lower spray arm alternator disc position unknown.
On Bosch dishwashers: Defective microswitch inside water diverter, stripped plastic gears...
Access water diverter assembly beneath sump. Test synchronous motor winding resistance...
Bosch Serie 4 / Serie 6 / Serie 8 VitaFresh pro 0°C NoFrost Refrigerator: Ambient room temperature sensor fault E04; external temperature NTC located at top hinge cover disconnected or open.
On Bosch refrigerators: Pinched wiring loom during door reversal procedure, dislodged plug...
Unclip upper door hinge cover. Inspect wiring for cuts or crushing. Measure ambient NTC...
Bosch Serie 6 / Serie 8 FlexInduction & PerfectFry Induction Cooktop: Mains under-voltage detected E4; AC line voltage drops below 185V AC under load during active heating.
On Bosch hobs: Loose terminal screw on terminal block, undersized house wiring...
Inspect mains terminal block connections for loose clamping screws or scorching. Measure...
Bosch Serie 6 / Serie 8 4D Hotair & EcoClean Direct Pyrolytic Oven: Power interlock safety relay failure E005; safety relay on power PCB fails to close power circuit to heating elements.
On Bosch ovens: Burnt relay contacts, failed 12V DC coil driver transistor, or open circuit...
Disconnect mains power. Measure resistance of relay coil on power PCB (nominal ~360–420 Ω)....
Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Water switch motor triac short-circuit E05; electronic controller cannot regulate water diverter valve motor.
On Bosch dishwashers: Short-circuit in synchronous diverter motor winding, water ingress on...
Inspect diverter motor for water traces. Measure motor coil resistance (> 3.5 kΩ; shorted...
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