E43Bosch Refrigerator — Bosch Refrigerator E43 Error Code
Evaporator fan motor failure
Severity
Critical
Difficulty
Moderate
Est. Cost
What's Happening
The evaporator fan that circulates cold air through the fridge and freezer has stopped working. Ice buildup on the fan blades from a defrost system failure is the most common cause. A dead fan motor is the second most common.
How to Fix It
Check for ice buildup on the fan behind the freezer rear panel. If ice is present, unplug for 24 hours to thaw — a defrost problem is the root cause. If the fan is clear but doesn't spin, the motor needs replacement.
Frequently Asked Questions
What does E43 mean on a Bosch refrigerator?
E43 means the evaporator fan isn't running. This fan circulates cold air through both the fridge and freezer compartments.
Why does ice keep blocking my Bosch fridge fan?
Recurring ice buildup means the defrost system has failed. The heater, thermostat, or timer isn't melting ice from the coils as designed. Fix the defrost system to prevent repeat E43 errors.
How do I access the evaporator fan on a Bosch fridge?
Remove the rear panel inside the freezer compartment (usually held by a few screws). The fan is mounted behind this panel near the evaporator coils.