Bosch E18 error code
Dishwasher
Bosch error code E18 on a dishwasher means: Water flow into dishwasher restricted. This guide walks you through the most common causes, step-by-step troubleshooting, and replacement parts that typically resolve E18 on Bosch dishwashers.
Safe to keep using?
Stop using
No immediate safety hazard detected, but monitor during use.
- • Unplug the appliance before inspection.
- • Do not continue using the appliance until the cause is identified.
Likely causes
Many codes resolve with cleaning, resetting, or reconnecting.
Check: Power-cycle the appliance and check for obvious blockages or loose connections.
Est. cost: $0–$0
Wear or electrical failure of an internal part.
Check: If basic checks fail, the faulty component likely needs replacement.
Est. cost: $0–$75
What it means
Water flow into dishwasher restricted.
How to fix it
- Unplug the dishwasher or turn off power at the breaker before inspecting any components.
- Confirm the error code E18 is still displayed after a power reset — hold power for 10 seconds, then restart.
- Check the most common cause for E18: Water flow into dishwasher restricted.
- Inspect hoses, connections, and visible wiring for damage, clogs, or loose fittings.
- If basic checks don't clear the code, the fix often requires a replacement part (see recommended parts below).
- Reassemble, restore power, and run a test cycle. If E18 returns, the faulty component likely needs replacement.
Call a pro when: Call a technician if you smell burning, see sparking, hear grinding from the motor, or the code returns after replacing the suspected part.
Repair videos
FAQ
What does Bosch E18 mean?
Water flow into dishwasher restricted.
Can I fix Bosch error E18 myself?
Many E18 errors can be fixed DIY if you're comfortable with basic tools. Start with the steps above. If the issue involves electrical components or the code returns after replacing parts, call a professional.
Do I need a replacement part for E18?
Often yes — error E18 frequently points to a failed component. Check the recommended parts below for direct replacements.
Other Bosch Dishwasher codes
Prevent this problem next time
- Follow manufacturer maintenance schedule
- Address small issues before they worsen
Sources
Manufacturer meaning
Water flow into dishwasher restricted.
FixApplianceCode guidance
Start with basic checks for Bosch E18 before ordering parts.
Source type: Part database
Source: ModelPartFinder + FixApplianceCode editorial
Last reviewed: 2026-08-07
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