Bosch Dishwasher Error Code E17

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

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. Check the pressure/level sensor and hoses: ensure any small plastic hoses to the pressure switch are not split, clogged or disconnected.
8. Look for error history: consult the dishwasher’s diagnostic mode (refer to the Bosch manual for model-specific steps) to read stored faults and live sensor values to narrow the cause.
9. Swap or test the NTC temperature sensor if readings are inconsistent; incorrect temperature can cause control logic to misinterpret cycles.
10. If multiple components test OK and wiring is good, consider the control board: intermittent or failed relays/inputs can show E17—replacement or service may be required.
11. If unsure or if a water leak, electrical fault, or PCB replacement is needed, stop and call a qualified Bosch service technician.

Maintenance / Prevention Tips

• Run the water at full pressure briefly before starting the dishwasher to remove air pockets in the line.
• Inspect and clean the inlet hose and filter every 3–6 months to prevent mineral and debris buildup.
• Use a water-softening product or maintain a built-in softener if your area has hard water to reduce scale on sensors and valves.
• Avoid laundry or garden use on the same line while the dishwasher runs to prevent pressure drops.
• Replace old or brittle supply hoses every 5–7 years to avoid kinks and internal collapse affecting flow.
• Run an empty maintenance cycle with dishwasher cleaner monthly to minimize limescale and grease buildup.
• Use recommended detergent amounts—excess suds or undissolved powder can clog sensors and strains.
• Keep the dishwasher’s underside and kickplate area clean and dry so connectors and PCB stay corrosion-free.
• Clamp or secure the supply hose so it cannot kink when moving the appliance.
• Install a simple inline filter or sediment trap if your supply has visible debris.
• Check door seals and baskets regularly so debris doesn’t get into pump/flow areas.
• If your model has a removable flow sensor or pump cover, visually inspect when servicing the pump.
• Schedule an annual appliance check with a technician if the dishwasher is heavily used.
• Keep the user manual and Bosch fault table handy for quick reference if codes appear.
• Power-cycle the unit occasionally after heavy detergent or rinse aid changes to clear stored anomalies.

FAQs

Conclusion / Safety Notice

Dealing with Bosch dishwasher E17 usually involves water flow, sensors, or related electronics. Many user-level fixes (cleaning inlet filters, checking hoses, resetting the machine) are safe and effective, but electrical checks, component testing or PCB work should only be done by someone with appliance repair experience. Always disconnect power and water before attempting repairs and never work on live circuits.

If troubleshooting steps above do not clear the code, if you find a leak, or if you are uncomfortable with electrical diagnostics, call a qualified Bosch service technician. Professional repair is recommended when replacing control boards, performing complex wiring repairs, or when the fault recurs after basic fixes.