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Bosch · Dishwasher · E02

Possible causes

A main-control-board relay fault was detected.

Diagnostic nodeE02CAUSES
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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

Possible causes for error E02

Published guidance and the observed behavior point to these possibilities: Control-board relay fault; Internal electronic malfunction; Related wiring fault. Check accessible conditions before considering a component fault.

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