Bosch · Dishwasher

Bosch dishwasher E18 code

ErrorE18

E18 is listed by Bosch support as water flow is too low or filling is incomplete. The exact checks and component layout can vary by model and region.

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Source-linked guidance reviewed against Bosch US dishwasher error codes.

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What the code means

Water flow is too low or filling is incomplete

Switch the dishwasher off before cleaning user-accessible parts. Hidden glass may be present near the filter and pump cover.

Typical symptoms

01Water enters slowly or the tub water level remains too low

02The wash phase may pause before circulation begins

03E18 returns when supply flow is below what the dishwasher requires

Likely causes

Start with the least invasive explanation and stop if the check requires internal electrical or sealed-system access.

01Water flow is too low or filling is incomplete

Safe next steps

1
Open the dishwasher water-supply valve fully
Follow the exact model manual where access or reset steps differ by product series.
2
Straighten the inlet hose and check it for visible damage
Follow the exact model manual where access or reset steps differ by product series.
3
Disconnect the hose at the faucet only after closing the valve, then measure faucet flow into a bucket; Bosch specifies about 10 litres per minute
Follow the exact model manual where access or reset steps differ by product series.
4
Reconnect the hose securely, open the valve, check for leaks, and run one short cycle
Follow the exact model manual where access or reset steps differ by product series.
5
If flow is adequate but E18 returns, arrange Bosch service for the inlet system
Follow the exact model manual where access or reset steps differ by product series.

When to stop

Stop if you see damaged wiring, smell burning, find an active leak, suspect gas or refrigerant, or need to remove a sealed electrical cover. Use a qualified appliance technician.