Bosch Dishwasher E03 Error: Water Fill Problem
What Does Bosch Dishwasher Error Code E03 Mean? Error code E03 on a Bosch dishwasher indicates a water supply issue. The machine has detected that not enough water is entering the tub to run the wash cycle. This can be caused by a closed valve, a kinked hose, a clogged filter, or a defective inlet […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Without adequate water, the dishwasher cannot clean dishes. Running it dry may damage the wash pump.
Can I reset the code?
Yes. After checking the water supply and clearing any blockages, reset the dishwasher by pressing and holding the Start button for 3 seconds, then start a new cycle.
When to stop immediately?
Stop if you notice: Water supply valve is fully open but no water enters, You hear the inlet valve buzzing but no water flows.
Symptoms You May Notice
Dishwasher starts but no water enters
The cycle initiates but the tub remains empty — no sound of water flowing in.
Cycle stops shortly after starting
The program begins but halts within the first few minutes due to insufficient water.
Humming noise without water flow
The inlet valve buzzes but water does not enter the dishwasher.
Possible Causes
Closed or kinked water supply valve
The shutoff valve under the sink may be closed or the supply hose is kinked.
DIY PossibleClogged inlet screen
Mineral deposits have blocked the small filter screen at the water inlet valve.
DIY PossibleFaulty water inlet valve
The solenoid-operated inlet valve has failed electrically or mechanically.
Requires ProfessionalSafe Checks You Can Do
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1
Check the water supply valve
Locate the shutoff valve under the kitchen sink and make sure it is fully open.
Turn the valve counterclockwise to open it. If it feels stuck, do not force it.
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2
Inspect the supply hose
Check the water supply hose for kinks, bends, or visible damage that could restrict water flow.
Gently straighten any kinks. Replace the hose if it is cracked or damaged.
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3
Clean the inlet filter screen
Turn off water supply, disconnect the hose at the dishwasher inlet valve, and clean the small mesh filter screen with a toothbrush.
Mineral buildup on this screen is one of the most common causes of E03.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Inlet valve buzzes but does not open
- Water supply is confirmed good but dishwasher still won't fill
- Error persists after cleaning the inlet screen
Need Professional Help?
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