What Does Error Code E17 Mean on a Bosch Washing Machine?
Check that the cold water tap behind the machine is fully open, then restart the cycle — if low pressure or a closed tap was the cause, the machine should fill normally and continue within a few minutes (takes about 5 minutes).
Fault description
Error E17 is a water intake fault. When your Bosch washing machine displays this code, it means the drum has not filled to the required level within the time the machine expects. The control board monitors how long filling takes, and if water does not reach the correct level fast enough, it stops the cycle and displays E17 to protect the machine and your laundry.
When this error occurs, the wash cycle pauses or fails to start properly. You may hear the machine attempting to fill — a faint hissing or trickling sound — but the drum remains empty or only partially filled. In some cases the machine will make no sound at all if the water supply is completely cut off.
The good news is that the most common causes are straightforward to check and fix yourself without any tools or specialist knowledge.
Causes
- Water tap closed or not fully open — The cold water supply tap behind or beneath the machine may have been accidentally turned off or left partially closed. Even a tap that is only slightly restricted can reduce flow enough to trigger E17.
- Low water pressure from the mains supply — Bosch washing machines require a minimum water pressure — typically around 0.5 bar — to fill correctly. If your household pressure is temporarily low, such as during peak demand times or due to works in your street, the machine may time out before filling.
- Blocked or kinked inlet hose — The rubber hose connecting the tap to the machine can become kinked if the machine has been pushed back against a wall, or the mesh filter inside the hose connection can become clogged with limescale and debris over time.
- Clogged inlet valve filter — At the point where the inlet hose connects to the back of the machine, there is a small mesh filter screen. This filter catches particles from the water supply and can become blocked, significantly restricting water flow into the drum.
- Faulty water inlet valve — The inlet valve is an electrically operated solenoid valve that opens to allow water in. If the valve coil has failed or the valve body is stuck, it will not open fully or at all, preventing the machine from filling regardless of water pressure.
- Faulty pressure sensor or wiring fault — The pressure sensor tells the control board how much water is in the drum. If the sensor or its connecting hose is faulty, the machine may incorrectly report that the drum is not filling even when water is entering normally.
Step-by-Step Fix
- 1
Check the water supply tap
Locate the cold water tap on the wall or floor behind the washing machine. Turn it fully anticlockwise to make sure it is completely open. It sounds obvious, but this is the cause of E17 in a large proportion of cases — taps are often knocked partially closed when the machine is moved for cleaning or maintenance.
- 2
Inspect the inlet hose for kinks
Pull the machine gently away from the wall and check the full length of the inlet hose. Straighten out any kinks or tight bends. Make sure the hose is not being compressed by the machine sitting on top of it or pressed hard against the wall.
- 3
Clean the inlet hose filter
Turn off the water tap, then unscrew the inlet hose from the back of the machine by hand. Inside the machine's inlet port you will see a small mesh filter screen. Use a pair of needle-nose pliers or tweezers to carefully pull it out, rinse it under the tap to remove any debris or limescale, and refit it before reconnecting the hose. Have a towel ready as a small amount of water will spill.
- 4
Check your household water pressure
Turn on a cold tap elsewhere in your home and observe the flow. If pressure seems unusually low throughout the house, the issue may be with your mains supply rather than the machine. Wait an hour and try again, or contact your water supplier if the problem persists across all taps.
- 5
Reset the machine and run a test cycle
Once you have completed the checks above, turn the machine off at the power socket, wait 30 seconds, and switch it back on. Select a short cycle such as a quick wash and observe whether the machine begins to fill normally. If E17 does not reappear, the fault has been resolved.
- 6
Test the inlet valve
If the machine still shows E17 after all the above steps, the inlet valve itself may be faulty. You can test this by listening carefully at the back of the machine when a cycle starts — a working valve makes a faint click as it opens. No click at all suggests the valve coil may have failed and the valve will need to be replaced.
- 7
Check the pressure sensor hose
If you are comfortable removing the top panel of the machine, locate the thin plastic hose running from the bottom of the drum up to the pressure sensor on the side of the cabinet. Check that it is not cracked, disconnected, or blocked with residue. A faulty or disconnected pressure hose can cause the machine to misread water levels and trigger E17 even when filling is normal.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have confirmed the water supply is fully open, the hose is clear, and the inlet filter is clean, but the machine continues to display E17, the inlet valve or pressure sensor is likely faulty. Replacing these parts involves accessing internal components and working near the water supply connection, which carries a risk of leaks if not reassembled correctly.
You should also call a service technician if you notice any signs of water leaking from the inlet hose connection after reassembly, if the machine trips your household electrics when it attempts to fill, or if the error code is accompanied by unusual noises such as buzzing or humming from the back of the machine during the fill phase.
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Frequently Asked Questions
Can I still use my Bosch washing machine while it is showing E17?
No — when E17 is active the machine has halted the cycle because it cannot fill with water. Running a cycle without adequate water could damage the drum bearings and heating element. Resolve the fill issue before using the machine again.
How do I clear the E17 error code once I have fixed the problem?
Turn the machine off at the power socket and leave it unplugged for at least 30 seconds. When you switch it back on the error should clear automatically. If the underlying fault has been resolved, the code will not return when you start a new cycle.
Could a frozen pipe cause E17 in winter?
Yes. If your washing machine is in an unheated garage, utility room, or outbuilding, the inlet hose or the supply pipe can freeze during cold weather, completely blocking water flow. Allow the pipe to thaw naturally or use a warm cloth on the hose — never use a naked flame. Consider insulating exposed pipework to prevent this happening again.
How long does it take a Bosch washing machine to fill before triggering E17?
Bosch machines typically allow around five minutes for the drum to reach the required water level before triggering a fill error. If your water pressure is borderline, the machine may fill very slowly and still trigger the error even though water is technically flowing. Improving pressure or fully opening the tap usually resolves this.
Is E17 the same as E18 on a Bosch washing machine?
No — E17 relates specifically to a water fill or intake problem, while E18 is a drainage fault indicating the machine cannot empty water from the drum. The two errors affect opposite ends of the water cycle and have different causes and fixes. If you are seeing E18, check the pump filter and drain hose rather than the inlet side.