check the info button in service mode. it will tell you all the possibilities for all ecode occurences.
Most likely a problem with your fixing drawer connector
It might reset and go away, or you may have to change connector
E004 0205 05 Title Thermistor temperature difference error Description of detection Difference of detected temperature between thermistors is bigger than the specified value. Measures 1. The connectors of the fixing main/sub thermistor (THM1-1 to 3) are physically removed (the cable is caught, or disconnected) -> replace the fixing belt unit 2. Check the rotation of the fixing motor (the connector is physically removed or disconnected) -> replace the fixing motor or the harness3. The connectors of the pressure sub thermistor (THM2, 3, 4) are physically removed (the cable is caught, or disconnected) -> replace the thermistor or the presure stay 4. Disconnection, soiled, improper location of, or faulty pressure sub thermistor -> clean the thermistor or replace it5. Faulty drawer connector -> clean the drawer connector or replace the fixing drawer cable6. Replace the DC controller PCB
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