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Bosch · Dishwasher · E09

Installation checks

An internal heat-pump heater fault was detected.

Diagnostic nodeE09INSTALLATION
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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

Installation checks for error E09

Installation checks can help narrow the context of Bosch E09, but this page does not claim that the named system is the failed component. Begin with the manufacturer meaning — An internal heat-pump heater fault was detected. — then complete only accessible checks: Turn off the dishwasher.; Reset power at the breaker for 30 seconds.; If E09 returns, stop use and contact Bosch support..

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