Codes / Bosch / Dishwasher
Bosch E18: Water is not reaching or being pumped through the dishwasher correctly.
Bosch's page says E18 signals a water-flow problem entering the dishwasher, and that it can be triggered when the water level is too low or when water is not being pumped correctly.
Source: E18 Bosch Dishwasher Error Code; read 2026-10-17. 2 owner checks listed.
Fault isolation, in Bosch's order
- Owner check from Bosch's page
- Observation Bosch asks you to make
- Request service: technician only beyond here
- Code should clear
The checks, with Bosch's detail
- 1Check the inlet hose for kinks or damage
Bosch lists this first.
- 2Confirm the water supply is turned on
Bosch says the water flow rate should be 10 litres per minute.
- Does E18 still appear?
Where to stop
Bosch's page says to contact Bosch Customer Support at 1-800-944-2904, and links its contact form and dishwasher support page.
Not covered here, on purpose: The inlet valve, the circulation pump and the flow meter. Bosch's owner page stops at the hose and the supply. Read when to stop and call a technician.
Same code, different meaning on other brands
None of the other brands in the verified set (LG, Samsung, Whirlpool) uses E18 on the official pages read for this site. If your display shows E18 on a different brand, do not apply these checks; use the lookup or that brand's own support page.
Same symptom on other brands
- 4CSamsung washer: Water is not entering the washer correctly.
- IELG washer: The washer did not fill with water in time.
- 4C2Samsung washer: The cold supply water is extremely hot, usually swapped hoses.
- F8 E1Whirlpool washer: The washer is not detecting the correct amount of incoming water.
- E16Bosch dishwasher: Water is not flowing into the dishwasher correctly.
Other Bosch codes here
- E24Bosch dishwasher: The dishwasher is not draining properly; the drain filter is blocked.
- E15Bosch dishwasher: Water was detected in the base; the leak protection system has activated.
- E16Bosch dishwasher: Water is not flowing into the dishwasher correctly.
- E22Bosch dishwasher: The dishwasher filter is blocked.
- E25Bosch dishwasher: The drain pump is blocked, or its cover is loose or missing.
That is 5 of the 6 Bosch dishwasher codes verified here. The rest, with every display variant in one table, are on Bosch dishwasher error codes.
Provenance
| Official page | E18 Bosch Dishwasher Error Code |
|---|---|
| Page URL | https://www.bosch-home.com/us/owner-support/get-support/support-selfhelp-dishwasher-error-e18 |
| Manufacturer's last-updated date | not shown on the page |
| Read on | 2026-10-17 |
| Owner checks on the page | 2 |
| Service instruction | The manufacturer's own |
| Technician review | Not yet reviewed by an appliance technician. Model-specific pages are not built until that review happens (see /methodology/). |
| Record | /data/codes.json, id bosch-dishwasher-e18 |