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Bosch · Dishwasher

Bosch Dishwasher error E02

A main-control-board relay fault was detected.

Error codeE02Also: E:02
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Stop and make safeBosch identifies E02 as a main control board relay fault and limits user action to a 30-second power reset before contacting support.

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

What this code usually means

Bosch identifies E02 as a main control board relay fault and limits user action to a 30-second power reset before contacting support.

BrandBosch
ApplianceDishwasher
ConfidenceManufacturer sourced

Safe checks, in order

  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.

Common symptoms

  • Cycle stops unexpectedly
  • Functions may not respond normally
  • E02 reappears after power-up

Possible causes

  • Control-board relay fault
  • Internal electronic malfunction
  • Related wiring fault

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