← Back to all error codes
U400 Bosch Range Moderate Repair

Bosch U400 Error Code: Meaning, Fix & Cost

The supply voltage is incorrect. It is outside the normal operating range. Contact your electrical utility provider or contact Bosch Customer Support at 1-800-944-2904 for assistance. See more

What U400 Means

The supply voltage is incorrect. It is outside the normal operating range. Contact your electrical utility provider or contact Bosch Customer Support at 1-800-944-2904 for assistance. See more

Likely cause: Power outage, circuit breaker trip, or internal short circuit

Estimated Repair Cost $250-500

How to Fix It

Check that the circuit breaker has not tripped. Verify the unit is receiving 120V/240V at the outlet. Reset power at breaker for 30 seconds. If the breaker trips again, there is a short circuit that needs professional diagnosis.

Difficulty: Moderate Repair

Consider calling a professional for this repair.

Official Reference

https://www.bosch-home.com/us/owner-support/error-codes/slide-in-ranges

Related Guides & Resources

Frequently Asked Questions

What does the Bosch U400 error code mean?

The supply voltage is incorrect. It is outside the normal operating range. Contact your electrical utility provider or contact Bosch Customer Support at 1-800-944-2904 for assistance. See more.

What causes the U400 code on a Bosch range?

Power outage, circuit breaker trip, or internal short circuit.

How do I fix the U400 error on my Bosch range?

Check that the circuit breaker has not tripped. Verify the unit is receiving 120V/240V at the outlet. Reset power at breaker for 30 seconds. If the breaker trips again, there is a short circuit that needs professional diagnosis. Estimated repair cost: $250-500.

Is the U400 error code a DIY fix or do I need a professional?

This is rated as moderate repair. This may require a professional technician.

Related Error Codes

Need the Manual?

Search 11,371 Bosch manuals in our database for installation specs, wiring diagrams, and service procedures.

Browse Bosch Manuals →