Bosch · Washer Moderate

E18 — / F18 — No Drainage

Per Bosch's official US error-code page (listed as E18/F18), this means the drainage hose is blocked or kinked. Bosch warns leaking water may be very hot, and instructs checking whether the drainage hose has been installed without kinks.

Keep using it?
Yes, with caution
DIY difficulty
Easy
Verified against
bosch-home.com ↗

How to fix it

  1. Power off and clean the drain pump filter behind the front-bottom flap.
  2. Check the drain hose for kinks/clogs and the standpipe.

Why it happens

Typical signs: Standing water in the drum · Will not spin · E18 shown

  • Clogged drain pump / filter Debris in the pump or the front-access filter.
  • Kinked or blocked drain hose The drain hose is pinched or clogged.
  • Blocked siphon A blocked standpipe/siphon.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Bosch Washer Drain Pump Common replacement
    Amazon →

More Bosch washer codes

E01 E01 — Door Lock Fault E02 E02 — Motor Fault E03 E03 — Door Lock Fault E04 E04 — Water Inlet Fault E05 E05 — Heating Element Fault E06 E06 — Door Lock Circuit Fault

All Bosch codes → All washer codes →

Frequently asked questions

What does the E18 code mean on a Bosch washer?

Per Bosch's official US error-code page (listed as E18/F18), this means the drainage hose is blocked or kinked. Bosch warns leaking water may be very hot, and instructs checking whether the drainage hose has been installed without kinks.

What causes the E18 code on a Bosch washer?

Clogged drain pump / filter: Debris in the pump or the front-access filter. Kinked or blocked drain hose: The drain hose is pinched or clogged. Blocked siphon: A blocked standpipe/siphon.

Is it safe to keep using a Bosch washer with a E18 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix E18 on a Bosch washer?

Power off and clean the drain pump filter behind the front-bottom flap. Check the drain hose for kinks/clogs and the standpipe.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: bosch-home.com.