Error code Bosch washing machine error code E-13 ?

Hi sir one of these problem will be there 1 - No cold fill. Check that the taps are on or if the drain hoses are kinked. 
2 - No hot fill.The ambient temperature is likely to be below freezing possibly due to the pipes being frozen. Also check that the taps are on or if the drain hoses are kinked. 
3 - No mixed fill. It is likely that the water is not turned on at the taps. 
4 - Check the water supply, inlet valve and hot and cold hose connections. 
4 - A fault with the water heating has occurred. 
5 - Water is not being pumped out and a flood condition could occur. Check that the drainage hose is raised to the recommended minimum height and that the pipe is not blocked. 
6 - Extremely high water level Disconnect or turn off the water supply and ensure that the water level does not rise any more. Then book a service engineer. 
7 - Door not closed properly. Close door firmly at the 3 o'clock position. 
E20/1 - The thermistor resistance has drifted or the temperature scanning sequence is incorrect. The ambient temperature could be below freezing. 
thank u............