Symptoms
• Wash cycle stops or fails to start
• Drum does not fill with water
• E03 error code displays on the control panel
• Machine may make buzzing or clicking sounds during fill attempt
• Cycle pauses and eventually triggers an error after 2-3 minutes
• Reduced water flow or no water reaching the drum
Possible Causes
• Clogged inlet water filters (common in areas with mineral-heavy tap water)
• Kinked, pinched, or twisted water inlet hoses
• Faulty water inlet solenoid valve preventing water flow
• Low household water pressure below 20 psi (common in some US regions)
• Cold water inlet hose disconnected or improperly connected
• Home circuit breaker tripped, cutting power to inlet valve
• Water supply turned off at home shutoff valve
• Defective water level sensor not registering incoming water
• Broken or damaged inlet hose with internal blockage
Safety Checks You Can Do
• Check that both hot and cold water supply valves behind your washing machine are fully turned on (turned counterclockwise)
• Verify your home's main water supply is on and functioning by testing another faucet in your home
• Inspect both inlet hoses for visible kinks, twists, or damage from the back of the machine
• Check if your home circuit breaker has tripped; reset it by switching the breaker fully off then back on
• Examine the inlet hose connection points where they attach to both the machine and your water supply for loose fittings
• If your area has hard water, the inlet filters may be clogged; turn off water supply valves and carefully disconnect inlet hoses to visually inspect the filter screens for mineral buildup
• Verify your household water pressure is adequate by checking if water flows strongly from other faucets; low pressure below 20 psi may trigger this error
• Allow 30 seconds after turning on water valves before starting a cycle, as trapped air in lines can cause false readings
• Unplug the machine from the 120V outlet, wait 5 minutes, then plug it back in to reset the control board
• Consult your Bosch USA model's user manual for specific inlet hose routing and connection diagrams
• If error persists after these checks, contact an authorized Bosch service technician for sensor or solenoid valve diagnosis
Safety First
Always disconnect the appliance from power before performing any checks. If you are unsure about any step, please contact a qualified technician.