Bosch Dryer Error Code E:2051

E:2051 is a compressor overheating error on Bosch heat pump dryers. It is the 4-digit version of fault code E:27. The error indicates that the compressor has reached an unsafe operating temperature, causing the dryer to shut down to protect the component. Lint buildup restricting internal airflow is the most frequent cause.

A basic reset may temporarily clear the code, but if the underlying cause such as lint buildup or a fan issue has not been resolved, the error will return during the next cycle. Always address the root cause before relying on a reset. Repeated overheating cycles can cause progressive damage to the compressor.

If the fix is simply cleaning lint from the filters and heat exchanger, the repair costs nothing beyond your time. If a circulation fan motor needs replacement, parts and labor typically range from $100 to $250 depending on your location and service provider. A compressor replacement is significantly more expensive, often ranging from $300 to $600 or more, and in some cases replacement of the appliance may be more cost-effective.

Begin by powering off the dryer and cleaning all lint filters, the heat exchanger, and any accessible internal areas thoroughly. Allow the appliance to cool down for at least 30 minutes before restarting. If the error returns after cleaning and cooling, check that the room temperature is within the appliance's recommended operating range and inspect the circulation fan for obstructions or failure.

No, you should not continue running the dryer while this fault is active. The error indicates the compressor has already reached an overheating threshold, and continued operation risks permanent damage to the compressor and potentially other heat pump components. Allow the unit to cool completely and resolve the cause before resuming use.