Symptoms
• Washing machine stops mid-cycle and displays E10 error code
• Drum does not fill with water or fills very slowly
• Wash cycle cannot begin because water level sensor is not detecting sufficient water
• Error appears during the initial fill phase of the wash program
• Machine may beep or display the error on the digital control panel
• Previously completed cycles now fail at the fill stage
Possible Causes
• Kinked, clogged, or frozen inlet hose (hot or cold water supply line)
• Water supply valve partially or fully closed at the wall connection
• Inlet valve filter screens clogged with mineral deposits or debris common in USA municipal water supplies
• Low household water pressure below the 20 psi minimum requirement for Bosch machines
• Defective water inlet valve solenoid not opening properly
• Faulty water level sensor or pressure switch in the machine
• Damaged inlet hose connection or loose fitting at the machine or wall
• Electrical issue preventing the inlet valve from receiving power
• Clogged water inlet valve due to hard water mineral buildup
Safety Checks You Can Do
• Turn off the washing machine and unplug it from the 120V outlet for 5 minutes, then plug back in and restart to reset the error
• Check that both the hot and cold water supply valves behind the washing machine are fully turned on (turn counterclockwise to open)
• Inspect both water inlet hoses for kinks, bends, or damage along their entire length and straighten if needed
• Verify your home's water pressure by attaching a pressure gauge to an outdoor faucet; it should read between 20-116 psi (Bosch USA standard)
• Look at where the inlet hoses connect to the wall and the machine to ensure connections are hand-tight and not leaking
• Turn off the water supply valves, disconnect the inlet hoses from the machine, and inspect the connection points for debris or mineral buildup
• Listen for humming or clicking sounds from the machine when starting a cycle; absence of sound may indicate a solenoid valve issue
• Try running a different wash cycle or the rinse-only cycle to see if the error persists
• Check your home's circuit breaker to ensure the breaker for the washing machine outlet is in the ON position and not tripped
• Clean the inlet hose screens by unscrewing the hoses from the back of the machine and rinsing the mesh filters under running water
• Ensure the water inlet hoses are the correct Bosch replacement hoses rated for 120V USA models
• Contact Bosch customer support if the error persists after these checks, as the inlet valve or water level sensor may require professional service
Safety First
Always disconnect the appliance from power before performing any checks. If you are unsure about any step, please contact a qualified technician.