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The open lower cabinet beside a new dishwasher in a home kitchen, the dishwasher's drain hose rising in a high loop and clipped to the underside of the counter, a braided supply line running to a quarter-turn valve, a folded towel on the cabinet floor, nobody in the frame.

Bosch E18: a kinked drain hose on a laundry machine

Bosch's own fix for this alert is to check whether the drainage hose has been installed without kinks, which puts the cause squarely on how the hose was routed at hookup rather than on the pump.

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Mon–Sat, 8am–8pm

  • Water supply and drain
  • Water supply and shutoff connection
  • Source: Bosch

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What E18
actually means.

Bosch's own fix for this alert is to check whether the drainage hose has been installed without kinks, which puts the cause squarely on how the hose was routed at hookup rather than on the pump. A hose folded tight behind the machine, or pinched where it passes through a cabinet opening, produces exactly this alert on an otherwise healthy unit.

Bosch appliance display · also shown as F18

What to do when E18 shows on the appliance

Kind of codeWater supply and drain

The new appliance is reporting what it gets from the water connections behind it. A no-water or slow-fill message on the first fill usually means the supply valve is still closed or only half open, or the new line kinked when the unit slid back; a drain message means the drain hose is pinched, pushed too deep into the standpipe, or looped higher or lower than the installation instructions allow. Open the valve fully, straighten the hose, set it to the height the manual gives, and run the cycle again.

Usually leads toWater supply and shutoff connection

New supply lines from a working quarter-turn stop to each water appliance, tested under pressure.

Shows up asDrain Backing Up After an Install: Plug, Loop and Standpipe

A drain backing up after an install leaves water standing in a new machine, pushes it into the sink or spills it over the top of the standpipe.

MakeBosch

Bosch installs cover every room: a dish care machine slid under the counter, a compact laundry pair, built-in cold storage, and gas or induction cooking.

SourceBosch US error codes — washers

Confirmed on Bosch's current US error-code page for washers, listed as E18 or F18.

Before you book,
in this order.

Each step comes from Bosch's own guidance for E18 on its appliances. Follow it to the end: the last card says whether this is a visit.

01

Pull the machine out enough to see the full run of the drain hose without disconnecting it.

02

Straighten any kink or tight bend, especially where the hose exits the cabinet or turns toward the standpipe.

03

Confirm the hose clip at the drain connection is seated and not pinching the hose.

04

If the hose is already straight and the alert repeats, book a visit rather than force the hose further.

Still there?

It usually turns into water supply and shutoff connection. Book with the code and the model number.

What not to do

E18 is not the same alert as a blocked drain pump, and Bosch's own instruction does not ask the owner to touch the pump for this code. Straightening the hose is the documented first and only step.

What you may
notice with it.

The appliance problems E18 tends to arrive with. Answer these at the appliance before anyone is booked.

All problems

Before you call

Drain Backing Up After an Install: Plug, Loop and Standpipe

All 6 causes, cheapest first

It also comes with

Close view into the open tub of a newly installed dishwasher under a stone counter, its racks pulled out, a layer of cloudy standing water covering the filter at the bottom of the tub, the open sink cabinet beside it showing a gray drain hose lying flat along the cabinet floor instead of rising in a loop, soft daylight. Problem

Drain Backing Up After an Install: Plug, Loop and Standpipe

6 causes, cheapest first

Where E18 usually leads

Water supply and shutoff connection.

New supply line and quarter-turn stop for a refrigerator, ice maker, dish care machine or laundry pair, flushed and tested under pressure · low.
Book a visit What the job involves

Bosch
appliances.

Bosch installs cover every room: a dish care machine slid under the counter, a compact laundry pair, built-in cold storage, and gas or induction cooking.

Bosch appliance installation

More Bosch codes

dEE17E32

Water supply and drain on other makes

ASKO F12Cove Error 800115Dacor 4CDCS Blank display / OFF after power interruptionElectrolux HO SEFisher & Paykel Water is not getting to the machineFrigidaire E1Gaggenau E:3200
All 38 codes of this kind
A bright kitchen during an installation, a new stainless French door refrigerator on a low four-wheel appliance dolly being eased toward an empty cabinet opening, a technician seen from behind and shoulders down guiding it with one hand on the side of the cabinet, a folded moving blanket and a coil of new braided water line on a protective floor runner, cardboard corner guards at the edge of the frame, even daylight. Bosch builds this

Cold storage

Setting a new refrigerator, freezer, wine or beverage unit or ice maker into its opening: measured, connected to water, leveled and started.

 A home kitchen mid-installation, a new stainless freestanding gas range pulled a foot out from its opening, a technician seen from the shoulders down kneeling beside it and tightening a new yellow-coated flexible gas connector to a wall shutoff valve with a wrench, a small spray bottle of leak solution on the floor, the anti-tip bracket screwed to the floor at the back, every burner off, even daylight. Bosch builds this

Cooking appliances

Hooking up ranges, cooktops, wall ovens, microwaves and hoods: gas connectors leak-tested, anti-tip brackets fastened, ducts sized and the first light checked.

 A kitchen during an installation, a new stainless built-in dishwasher halfway slid into its opening under a stone counter, its kick plate removed, a technician seen from behind and shoulders down on one knee guiding a gray drain hose and a braided supply line through the hole in the side cabinet, the sink cabinet doors open beside him, a flashlight on the floor, even daylight. Bosch builds this

Dish care

Fitting a new dishwasher or dish drawer under the counter: supply line, drain loop or air gap, power, mounting brackets and a first test cycle.

In Bosch's own words

Check whether the drainage hose has been installed without kinks.
Bosch US error codes — washers

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Confirmed on Bosch's current US error-code page for washers, listed as E18 or F18.

Bosch E18 appliance installation,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A family unpacking groceries into a newly fitted kitchen, the fresh appliances set flush in their openings.
For the heart of your home.

Questions
about E18.

Can I clear E18 myself?
Pull the machine out enough to see the full run of the drain hose without disconnecting it. If it comes back, it needs a visit.
Is E18 the same problem as E17 on a Bosch laundry machine?
No. E17 is about water coming in; E18 is specifically about the drainage hose being blocked or kinked on the way out. They're documented as separate alerts with separate fixes.
Where is the drain hose most likely to be kinked on a fresh install?
The most common spot is right where the hose exits the cabinet opening or bends toward the standpipe, since that's where it gets folded tight when the machine is pushed back into place.
Can a kinked drain hose damage the machine if it's left that way?
It can back water up and trip this alert repeatedly, and a hose forced into a tight bend can eventually crack, so it's worth straightening promptly rather than working around the alert.

Back to your everyday

Still showing E18?

A booking moves faster with three things: the message exactly as the display shows it, the model number from the carton or the rating plate, and the moment it first appeared. With those, the office can tell whether it is a setup step or a connection to put right, and send the part that fixes it.

Schedule an installation Call (844) 638-8309
(844) 638-8309 Schedule an installation