Bosch Dishwasher E18 error code
- Dishwasher
On Bosch dishwashers, error E18 indicates: Water flow into dishwasher restricted. Start with a 5-minute power reset at the breaker, then follow the dishwasher-specific checks below before ordering replacement parts for E18. If the code returns on two consecutive cycles after a reset, treat it as a confirmed fault — not a one-time power glitch.
Reviewed August 2025 · sources below
Safe to keep using?
Stop using
Severe overheating requires stopping use until the cause is identified.
- • Unplug the appliance before inspection.
- • Do not continue using the appliance until the cause is identified.
Next step
Still seeing E18?
Show a photo or describe the symptom. Answer a few safety-first questions and see whether a part is needed.
Free guided checks · No account required · Don’t open live electrical, gas, or refrigerant equipment
How to fix E18
- Unplug the dishwasher or turn off power at the breaker before inspecting any components.
- Reset Bosch E18: leave power off for 5 minutes, restore power, then restart. Confirm whether E18 returns.
- 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 a reset and 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.
What E18 means
Water flow into dishwasher restricted.
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
Professional assistance recommended
This issue may be unsafe for DIY repair. Follow the safety guidance above and contact a qualified technician.
Questions about E18
What does E18 error code mean on a Bosch dishwasher?
Water flow into dishwasher restricted.
How do I reset Bosch dishwasher E18?
Unplug the dishwasher or switch it off at the breaker for 5 minutes, then restore power and restart. A reset clears a stored E18 after a glitch, but the code will return if the underlying fault is still present.
What part do I need for Bosch E18?
Often yes — error E18 frequently points to a failed component. Check the recommended parts below for direct replacements.
Can I fix Bosch error E18 myself?
Many E18 errors can be fixed DIY if you're comfortable with basic tools. Start with the reset and steps above. If the issue involves electrical components or the code returns after replacing parts, call a professional.
Bosch E18 on specific models
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: 2026-11-05
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
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