What the Bosch dishwasher E17 code means
The Bosch dishwasher error code E17 is commonly reported as a water flow or sensor-related fault that prevents the machine from accurately detecting or regulating incoming water. When the control electronics detect inconsistent or missing flow/level data they trigger E17 to protect the wash cycle and prevent damage. You may notice longer cycles, incomplete wash or rinse results, poor drying, or the dishwasher refusing to start or pause mid-cycle. In some cases E17 can also be related to wiring, the inlet valve or a faulty control board; left unaddressed the problem can lead to repeated interruptions, poor cleaning performance, higher energy/water use, and in rare circumstances contribute to overflow or heating problems if sensors are not reporting correctly.
Common causes
- Blocked or dirty inlet filter/strainer restricting water flow
- Faulty flow meter (water consumption sensor) or turbine sensor
- Malfunctioning water inlet valve (sticking or electrically failed)
- Damaged or loose wiring to the flow meter, sensors, or inlet valve
- Faulty pressure sensor or water level switch (AquaStop related components)
- Faulty temperature/NTC sensor giving incorrect readings that confuse flow logic
- Control board (PCB/ECU) logic failure or corrupted firmware
- Low mains water pressure or kinked supply hose limiting flow
- Debris in softeners, filters, or dishwasher plumbing that affects flow
Troubleshooting steps
- Reset the dishwasher: switch off at the wall or breaker for 1–2 minutes, then restart to see if E17 clears. A reset can sometimes clear transient sensor/communication errors.
- Check incoming water and pressure: ensure the supply tap is fully open and the hose is not kinked. Low household water pressure can trigger flow-sensor faults.
- Inspect and clean the inlet filter/strainer: turn off water, disconnect supply hose, and remove any debris from the mesh filter where the hose connects to the dishwasher.
- Examine the inlet valve: look for obvious signs of damage, mineral buildup, or a valve that remains open/closed. Replace if the valve does not actuate correctly.
- Test the flow meter/turbine sensor: visually inspect for debris, spin the paddle/turbine by hand if accessible, and check wiring continuity. Replace the flow meter if it is seized or electrical readings are out of spec.
- Inspect wiring and connectors: unplug power, remove the kickplate, and check harness connectors to the flow meter, inlet valve, pressure switch and control board for corrosion, loose pins, or damage.
- Check the pressure/level sensor and hoses: ensure any small plastic hoses to the pressure switch are not split, clogged or disconnected.
- Look for error history: consult the dishwa