The complete reference for Bosch error codes across washers, dryers, dishwashers, refrigerators, and ovens. Pick your appliance below for the full code breakdown organized by problem category.
Bosch uses a consistent letter-and-number format across its appliance lineup. Most codes start with E (Error) or F (Fault), followed by two digits — for example E18 for a drainage timeout or E17 for a water supply fault. On some European-market models and older units, the same fault is shown with an F prefix instead: F18, F17. The underlying problem and fix are identical.
Certain Bosch models — particularly older 300/500 Series washers — display only a two-digit number with no letter prefix: 17, 18, 02. These map directly to their E/F equivalents and are cross-referenced on each appliance page. Dishwashers and ovens use slightly different ranges: dishwashers favor E codes in the single digits (E1–E9), while ovens use higher numbers like E105 or E301.
The biggest practical advantage with Bosch: the Home Connect app (available for Wi-Fi-enabled 800 Series appliances) logs fault codes automatically and displays a plain-language explanation with a recommended first step. If your appliance is connected, check the app before any manual troubleshooting — it often surfaces the exact cause in seconds.
Each link below leads to the full appliance-specific page where codes are organized into problem categories (water supply, drainage, motor, door, heating, sensors) — not a flat alphabetical list — so you can find your fault even if you only know the symptom, not the code.
Bosch washer codes group into eight problem categories: Water Supply Drainage Door Unbalanced Heater Temperature Sensor Motor Control Board. The full appliance page walks through each category with diagnostic steps.
Bosch dryer codes split between Heating & Temperature (E30, E31, E32) and Door & Drum (E60, E70) categories. Heat-pump models add Condenser faults unique to that technology. Heating faults are the most serious — a blocked lint filter or clogged condenser is often the root cause.
Bosch dishwasher codes use single-digit E codes and cover Water Supply Drainage Heating and Flood Protection categories. The E15 AquaStop code signals active water at the base of the machine and requires immediate attention.
Bosch refrigerator codes split into Temperature Alarms (E1, E2) and Defrost & Fan (E4, E5, E8) categories. Temperature alarms indicate the appliance is no longer maintaining safe food storage temperatures — act quickly on these.
Bosch oven codes use higher E-number ranges — E105, E210, E301 — grouped into Temperature Sensors and Control & Door categories. Most oven faults require a technician; a hard reset clears only transient board errors.
How to tell which Bosch error codes you can clear yourself — and which need a technician.
The code falls in this list and the appliance is otherwise functional:
The code indicates a hardware fault, or you see any of these signs:
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