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Bosch · Dishwasher · E02

Diagnostic decision tree

A main-control-board relay fault was detected.

Diagnostic nodeE02DECISION-TREE
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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

Diagnostic decision tree for error E02

Confirm E02; verify Bosch and dishwasher; compare the observed symptom; complete accessible checks in order; stop and request service if the code persists or a stop condition appears.

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