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Bosch · Dishwasher · E02

Common troubleshooting mistakes

A main-control-board relay fault was detected.

Diagnostic nodeE02COMMON-MISTAKES
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Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: Bosch dishwashers using E02/E:02; model-specific diagnosis is required.

GUIDANCE

Common troubleshooting mistakes for error E02

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. 1Switch the dishwasher off.
  2. 2Reset the circuit breaker for 30 seconds.
  3. 3If the display returns, keep the unit off and contact Bosch support.

Stop and get qualified help when

  • E02 persists after one reset
  • The breaker trips or electrical odor is present
Primary sourceBosch — dishwasher error codes ↗Verified 2026-07-17 · manufacturer