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Bosch · Dishwasher · E09

Safety boundaries

An internal heat-pump heater fault was detected.

Diagnostic nodeE09SAFETY
!
Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: Bosch dishwasher families that use E09/E:09.

GUIDANCE

Safety boundaries for error E09

Disconnect power when instructed, control water where relevant, and stop before disassembly or electrical measurement. Specific stop conditions: The code returns after reset; There is overheating, odor or breaker tripping.

Safe sequence

  1. 1Turn off the dishwasher.
  2. 2Reset power at the breaker for 30 seconds.
  3. 3If E09 returns, stop use and contact Bosch support.

Stop and get qualified help when

  • The code returns after reset
  • There is overheating, odor or breaker tripping
Primary sourceBosch — dishwasher error codes ↗Verified 2026-07-17 · manufacturer