Error code
Bosch dishwasher error code E18
Bosch error code E18: water is arriving but not enough of it, or not fast enough. What the code covers, what to check first, and what it does not tell you — on dishwashers.
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- In writing the price, before anything is opened
What we can confirm
Code E18, from the manufacturer's own documentation
A code is only meaningful together with the machine showing it — the same digits mean different things on different equipment.
The code
E18
Water is arriving but not enough of it, or not fast enough
or call (305) 783-3552
What it narrows down to
Low water level
What you are probably seeing
Diagnostic
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What it looks like from the kitchen
The symptom this code usually arrives with
A code names the subsystem; the symptom is what sent you to look at the display in the first place. That page says what it usually turns out to be, cheapest cause first.
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Often the door, not the machine Dishwasher will not start
A machine that does nothing, starts and stops, or lights up and never fills. Door and power account for most of these, and both are worth checking before anything is booked.
- No lights at all
- Lights on but nothing happens
- Starts, then stops within a minute
On the same appliance
What else belongs to the dishwashers
On this make a code belongs to the appliance rather than to a product line. These are the other conditions this machine can display, and the models that can show this one — a display often has more than one thing to say, and the model number decides what any of it costs to put right.
Other codes this appliance can display
Heat pump circuit
Board relay
Heating self-test
Wash arm diverter
Door sensor
Drying fan
Heat pump heater
Mineral chamber heater
Scale build-up
Flow meter
Leak protection
Water not entering
The same digits mean different things on different equipment. Search the full code list
In more detail
About Bosch dishwasher error code E18
What this one means
Water is arriving but not enough of it, or not fast enough.
The other ways your machine may say it
The same condition is published under more than one label, because it has been carried across generations of this appliance:
- E18, E3200 — the same condition, on machines of different ages
What the code covers
A published cause names a circuit rather than a component, which is the single most useful thing to know before ordering a part. This one covers:
- Restricted supply
- A partly blocked inlet
- A fill valve that no longer opens fully
What to try yourself
- Check the supply valve is fully rather than partly open
- Time how long a kitchen tap takes to fill a two-liter jug — genuinely low pressure is a real possibility in older buildings
Then what
This is the difference between no water and not enough water, and the second one usually points at pressure or a restriction rather than at a closed valve.
This code is published for dishwashers. The full list of codes has the rest.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards