e03 Troubleshooting

E03 / Water inlet fault on the Bosch Series 6 WAU28PH9

Source: ProductDB new-categories research catalog Confidence: 90% Verified Aug 8, 2026

The machine is not filling with water, often from a closed tap, blocked inlet filter or faulty inlet valve.

How to fix E03 / Water inlet fault

Check the water tap

Ensure the supply tap is fully open and the inlet hose is not kinked.

Source: ProductDB new-categories research catalog Confidence: 80% Verified Aug 8, 2026

Difficulty: ★ Est. 2 min

Clean the inlet filter

Unscrew the inlet hose and clean the mesh filter at the valve connection.

Source: ProductDB new-categories research catalog Confidence: 80% Verified Aug 8, 2026

Difficulty: ★ Est. 10 min

Replacement parts for the Bosch Series 6 WAU28PH9

Bosch Series 6 WAU28PH9 Door Seal / Gasket Bosch Series 6 WAU28PH9 Drain Pump Bosch Series 6 WAU28PH9 Water Inlet Valve Bosch Series 6 WAU28PH9 Heating Element Bosch WAU28PH9 Drain Filter Bosch WAU28PH9 Detergent Drawer Bosch WAU28PH9 Door Gasket Bosch WAU28PH9 Drain Hose Bosch WAU28PH9 Descaling Solution

← All Bosch Series 6 WAU28PH9 error codes

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