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Bosch · Human-reviewed guidance

Bosch dishwashers E18 error

The dishwasher water level is too low or water is not entering correctly.

E18

What this code can mean

Bosch directs users to check the water supply and inspect the inlet hose for visible kinks or damage.

Safe first checks

  1. 1
    Confirm the dishwasher water supply valve is fully open.
  2. 2
    Inspect the accessible inlet hose for visible kinks or damage without disconnecting it.
  3. 3
    Use the model manual before performing any model-specific flow check.

Possible causes

  • The dishwasher water supply is turned off or restricted.
  • The inlet hose is kinked or damaged.
  • Incoming water flow is below the appliance requirement.
Stop conditions
  • Turn off the water and request service if the inlet hose or connection is damaged or leaking.

Use Bosch support or an authorized servicer if normal water supply and hose routing do not clear E18.