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Bosch · Dishwasher · E09

Common troubleshooting mistakes

An internal heat-pump heater fault was detected.

Diagnostic nodeE09COMMON-MISTAKES
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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

Common troubleshooting mistakes for error E09

Common mistakes include assuming the code names a failed part, using instructions for another model family, repeated resets, and continuing after a leak or electrical warning.

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