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Source-backed error-code guide

Reviewed

Bosch Range E9000 / E9010 / U400 Error Code

Bosch directs owners with E9000, E9010, or U400 to the electrical utility or Bosch support. Treat these as supply-quality or installation conditions, not DIY internal-electrical tasks.

Applies to Bosch induction range reporting supply voltage outside the normal operating range

What the appliance detected

Detected condition

The appliance detected supply voltage outside its normal operating range.

What may contribute

Possible causes

  • Incoming utility voltage may be outside the appliance operating range.
  • A building electrical-supply problem may be affecting the range.
  • If supply is normal, model-specific appliance electrical diagnosis may be required.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the code without opening anything

    • Photograph the display and note whether other household electrical equipment is behaving unusually.
    • Do not open the electrical panel, receptacle, junction box, or range terminal area.

  2. Stop cooking until the supply is evaluated

    • Cancel active cooking and let hot cookware and surfaces cool safely.
    • If lights flicker, breakers trip, or other appliances show problems, contact the utility or a licensed electrician.

  3. Use qualified electrical help

    • Bosch directs owners to the utility or Bosch support for these voltage codes.
    • Have a licensed electrician handle any measurement or connection inspection.

Actions not recommended

  • Do not measure live voltage at a receptacle, terminal block, junction box, or inside the appliance unless qualified.
  • Do not repeatedly reset a breaker that trips again.
  • Do not replace an induction board or control based only on these codes.

When to stop and request service

  • The code persists after the utility or electrician confirms stable supply voltage.
  • There are repeated breaker trips, abnormal heat, damaged wiring, sparks, or burning odor.
  • Internal supply, filter, board, or control diagnosis is required after building supply is verified.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: September 23, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Bosch.

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