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E:90-01

E:90-01 - Mains voltage too low

Bosch · Dishwashers Series 6

What does E:90-01 mean?

The display shows E:90-01 alternately, indicating that the mains voltage supplied to the appliance is too low. This is not a fault of the dishwasher itself.

Common Causes

  • Mains voltage is too low.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Contact a qualified electrician.

  2. 2

    Have the electrician check the mains voltage and the electrical installation.

  3. 3

    Do not attempt to operate the appliance until the voltage issue is resolved by a professional.

Browse all codes in this manual (38)
Verified technical data. Last updated: April 2026

Related Faults

All LEDs lit up or flashingAll LEDs lit up or flashing - Electronics fault detectedAppliance cannot be switched on/operatedAppliance cannot be switched on or operated - Software update, power failure, or door issueAppliance stops/cuts out during programmeAppliance stops during the programme or cuts out - Door open, power/water interruption, or obstruction
Source: Bosch Dishwashers Series 6
Open Manual (Page 48)Search more codes in this manual