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Bosch · Dishwasher · E09

When a technician is needed

An internal heat-pump heater fault was detected.

Diagnostic nodeE09TECHNICIAN
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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

When a technician is needed for error E09

Qualified help is appropriate when The code returns after reset; There is overheating, odor or breaker tripping. Do not bypass sensors or energize an opened appliance.

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