Bosch Dryer Error Code E:20A0

E:20A0 indicates a Stage 1 overheating condition in the main heating circuit. It is the 4-digit version of the older E:01 fault code. The dryer's control system has detected that temperatures in the heating circuit have exceeded safe limits, and the machine is alerting you before the situation becomes more serious. Restricted airflow from lint or blockages is the most frequent cause.

You should stop using the dryer until the cause of the overheating has been identified and corrected. E:20A0 is a Stage 1 warning, meaning temperatures are elevated but have not yet reached the critical Stage 2 level. Continuing to operate the dryer with restricted airflow or a faulty component risks escalating the fault, damaging internal parts, or in extreme cases creating a fire hazard.

If the fix is simply cleaning the lint filter, airways, and heat exchanger, there is no parts cost involved. If a component such as a blower motor, high-limit thermostat, or temperature sensor needs replacement, parts typically range from $20 to $150 depending on the component, with professional labor adding $80 to $200 or more depending on your location and the complexity of the repair.

Start by cleaning the lint filter, all internal airways, and the heat exchanger, as blocked airflow is the most common cause of this fault. Also inspect the exhaust ductwork for kinks, blockages, or crushing. After clearing any obstructions, reset the dryer and run a test cycle. If the code returns, a component such as the blower motor, high-limit thermostat, or temperature sensor may need to be tested and replaced.

A reset may clear the code temporarily, but if the underlying cause is not addressed the fault will return. Before resetting, clean the lint filter, heat exchanger, and exhaust path thoroughly. If the code reappears after a reset and cleaning, a component failure is likely and further diagnosis is needed.