Siemens Dishwasher Error Code E18 Meaning and Possible Fixes
Siemens Dishwasher Error Code E18
If your Siemens dishwasher displays error code E18, this indicates a fault has been detected in the water inlet.
Siemens dishwashers require a consistent and unobstructed water supply to operate correctly. If the appliance detects a problem with the water inlet, it will stop the cycle and display the E18 error code.
View all Siemens dishwasher error codes
What the E18 Error Means
The E18 error code indicates a fault in the water inlet of your Siemens dishwasher. The cause may be a bent supply hose, a closed or calcified water tap, or a clogged filter at the water inlet connection.
Common Reasons This Error Appears
Kinked or bent supply hose
The water supply hose may be kinked, bent or squashed, restricting the flow of water into the appliance.
Closed or calcified water tap
The tap supplying water to the dishwasher may be closed, not fully open, or partially blocked with limescale.
Blocked inlet filter
The mesh filter inside the water inlet hose connection may be clogged with debris or limescale, significantly restricting water flow.
Low water pressure
If household water pressure is unusually low, the dishwasher may not be receiving sufficient water flow through the inlet.
Faulty inlet valve
The water inlet valve inside the machine may have failed, preventing adequate water from entering the appliance.
Safe Checks You Can Try
Check the water tap
Ensure the tap supplying water to the dishwasher is fully open and not calcified or restricted.
Inspect the supply hose
Check the water supply hose for any kinks or bends. Make sure it is properly connected at both ends and is not squashed behind the machine.
Clean the inlet filter
Turn off the water supply and disconnect the inlet hose from the back of the machine. Check the small mesh filter inside the connection point and clean it carefully under running water before refitting. Ensure there are no kinks in the water hose when refitting.
Restart the dishwasher
Switch the appliance off, wait a few minutes, then switch it back on and start a new cycle.
If You Need Spare Parts
If you are confident carrying out the repair yourself, compatible Siemens dishwasher parts are available on Amazon with next day delivery.
Always check your model number before ordering to ensure compatibility.
When To Contact A Professional
If the E18 error code continues to appear after trying the checks above, the inlet valve may need to be replaced and an engineer visit would be recommended.
Internal components should only be inspected or repaired by trained professionals.
Related Siemens Dishwasher Error Codes
You may also encounter related issues indicated by Siemens Dishwasher Error Code E16 and Siemens Dishwasher Error Code E14.
Error codes may vary slightly between different Siemens dishwasher models, so always consult the manufacturer documentation for your specific appliance.
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