- Appliances
- Dishwashers
E18
Bosch dishwasher E18: low inlet flow
Evidence linked to this decision
View source: Bosch US dishwasher error codesRisk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
E18 means the water level or inlet flow was too low for the programme. Check the visible tap and hose route, then stop if filling remains abnormal or any water appears.
Safety first
Stop and check this first
- Close the water valve and isolate power from a dry point if water is visible, filling continues or the inlet device is damaged. Never defeat AquaStop.
Safe checks you can perform
- Confirm the accessible water supply
- Inspect the hose and AquaStop externally
- Stop after one model-approved retry
Leave these tasks to a qualified professional
- Do not attempt this professional task: Measure the complete filling path
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Measure the complete filling path
What they doService should test supply flow, AquaStop, inlet valve, flow meter, water matrix, harness and control for the E-number.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Confirm the accessible water supply
Verify the household valve is fully open and that other taps have normal flow without dismantling plumbing.
Close the water valve and isolate power from a dry point if water is visible, filling continues or the inlet device is damaged. Never defeat AquaStop.
Evidence: Bosch US dishwasher error codes
Inspect the hose and AquaStop externally
Look for kinks, crushing, moisture or damage; do not immerse, open or bypass an AquaStop valve.
Close the water valve and isolate power from a dry point if water is visible, filling continues or the inlet device is damaged. Never defeat AquaStop.
Evidence: Bosch US dishwasher error codes
Stop after one model-approved retry
Record the code and stop if the tub does not fill normally, filling continues, or moisture appears.
Close the water valve and isolate power from a dry point if water is visible, filling continues or the inlet device is damaged. Never defeat AquaStop.
Evidence: Bosch US dishwasher error codes
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Virtual technician
Does E18 still appear after these checks?
This guided flow uses the exact code and your answers to choose a test, an expected result and the next branch.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Bosch
- Product type
- Dishwashers
Known code variants
- Balay dishwasher E18
- Balay E18
- Balay E18 error washer
- Balay E18 lavadora
- Balay washer E18 not draining
- Balay washing machine E18
- Bosch dishwasher E18
- Bosch E18
- Bosch E18 error
- Bosch E18 lavavajillas
- Bosch Geschirrspüler Fehler E18
- code erreur E18 lave-vaisselle Bosch
- code erreur E18 lave-vaisselle Siemens
- codice E18 Bosch
- codice E18 Siemens
- código E18 Bosch
- código E18 Siemens
- E 18
- E18 Bosch dishwasher
- E18 lavavajillas Balay
- E18 Siemens dishwasher
- E:18
- erreur E18 Bosch
- erreur E18 Siemens
- Error E18 Balay
- error E18 lavadora Balay
- error E18 lavavajillas Bosch
- error E18 lavavajillas Siemens
- errore E18 lavastoviglie Bosch
- errore E18 lavastoviglie Siemens
- F18
- F:18
- Fehlercode E18 Bosch
- lavadora Balay E18 no desagua
- Siemens dishwasher E18
- Siemens E00-18
- Siemens E18
- Siemens F18
- Viessmann heat pump E18
- Viessmann Vitocal 100-AW E18
- Vitocal E18
What it means
Bosch's official United States dishwasher table associates E18 with low water flow or an insufficient water level during filling. This page is restricted to Bosch dishwashers: the same code on a washer, dryer or another appliance can mean something else, and the exact E-number and manual decide compatibility.
Warnings and stop conditions
- Mediumsource verified
Close the water valve and isolate power from a dry point if water is visible, filling continues or the inlet device is damaged. Never defeat AquaStop.
Evidence: Bosch US dishwasher error codes
Symptoms and causes
Probable causes · in order
- The household inlet path is restrictedConfirmed
A closed valve, kinked hose, low flow or debris at the permitted inlet screen can prevent the expected fill.
Evidence: Bosch US dishwasher error codes
- The AquaStop, flow meter, fill valve or control path is faultyPossible
An intact external supply does not rule out a protected valve, sensor, harness or control fault inside the appliance.
Evidence: Bosch US dishwasher error codes
Sources and technical references
- 1
Bosch US dishwasher error codes
BSH Hausgeräte GmbH · 2026 · official_doc
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