Bosch Refrigerator Error Code E01 — What It Means & How to Fix It

What Does This Error Mean?

E01 on a Bosch refrigerator means the freezer compartment temperature has risen above the safe level. This is a temperature alarm, not a sensor fault — the freezer genuinely is too warm. Food in the freezer may be at risk. Check the door seal and condenser coils immediately.

Affected Models

Bosch Series 4 Refrigerator
Bosch Series 6 Refrigerator
Bosch Series 8 Refrigerator
Bosch Benchmark Series Refrigerator
Bosch French Door Refrigerator

Common Causes

Freezer door left open or not fully closed
Door seal worn or damaged — warm air entering the freezer
Condenser coils at the back dusty or blocked — refrigeration efficiency reduced
Recent large load of warm food placed in the freezer
Power cut or voltage drop interrupted the compressor cycle
Compressor starting to fail — not maintaining freezer temperature

How to Fix It

Check that the freezer door is fully closed and the seal is intact.

Push the door firmly shut. Run your hand around the seal — you should feel cold air escaping if the seal is damaged. A torn or brittle door gasket is a common cause of E01.
Check that the refrigerator has clearance at the back and sides.

Bosch recommends at least 5 cm clearance at the back and sides. Heat trapped behind the unit reduces cooling efficiency and can trigger E01.
Clean the condenser coils if accessible.

Dusty condenser coils reduce the refrigerator's ability to reject heat. Use a vacuum with a brush attachment on the coils at the back or underneath.
Check if a recent power cut caused the alarm.

E01 can appear after a power cut if the freezer warmed up during the outage. Once power is restored and temperature drops back to normal, the error will clear.
If E01 persists and the freezer still feels warm, call a technician.

A compressor that is not running, or a refrigerant leak, requires a professional repair. Do not restock the freezer until the temperature is confirmed safe.

When to Call a Professional

If the freezer does not return to normal temperature within 2 hours of correcting the door and clearance, call a Bosch technician. A failing compressor or refrigerant leak requires professional diagnosis.

Frequently Asked Questions

Is my frozen food still safe when E01 appears?

Food remains safe if the freezer temperature has been above 0°C (32°F) for less than 2 hours. If the freezer has been warm longer, check each item — partially thawed meat and fish should be discarded. Items that are still frozen solid are safe.

Will E01 clear itself once the freezer cools down?

Yes. E01 is a temperature alarm that clears automatically once the freezer returns to its set temperature. You do not need to manually reset it.