RRepairGraph
Bosch · Dishwasher · E27

Before requesting service

The electrical supply voltage is too low.

Diagnostic nodeE27BEFORE-SERVICE
!
Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: Bosch dishwashers that use E27/E:27; regional voltage thresholds differ.

GUIDANCE

Before requesting service for error E27

Before requesting service, record the model number, code, cycle stage and visible symptoms. Complete only these safe checks: Turn the dishwasher off.; Confirm the plug is fully seated without opening electrical enclosures.; Use a qualified electrician to check the supply voltage and circuit..

Safe sequence

  1. 1Turn the dishwasher off.
  2. 2Confirm the plug is fully seated without opening electrical enclosures.
  3. 3Use a qualified electrician to check the supply voltage and circuit.

Stop and get qualified help when

  • Always stop if lights flicker, wiring smells hot or breakers trip
  • Do not measure mains voltage unless qualified
Primary sourceBosch UK — dishwasher E27 ↗Verified 2026-07-17 · manufacturer