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Error code reference

Wolf Oven Error Code E60/U1

L2 voltage under voltage; voltage at L2 was between 155 VAC and 176 VAC or 0 VAC.

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What the E60/U1 error code actually means

Your Wolf oven has detected that one of the two power lines feeding the appliance is not delivering enough electricity, or has lost power entirely. This is usually a problem with your home's electrical supply, the circuit breaker, or the wiring connections at the outlet or junction box, not the oven itself. The oven has shut down to protect itself from damage caused by running on insufficient power.

Diagnostic procedure

The full E60/U1 procedure

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1
First diagnostic step
Check the power supply.
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Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of E60/U1

Ranked by how often they cause this code
  1. 1Partially tripped or failed circuit breaker
  2. 2Loose or corroded connection at the terminal block
  3. 3Utility supply voltage issue
  4. 4Damaged or undersized supply wiring
  5. 5Faulty oven control board

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Questions people ask about E60/U1

What does E60/U1 mean on a Wolf oven?
E60/U1 means the oven's control board has detected an undervoltage condition on the L2 leg of the 240 VAC power supply. The detected voltage on L2 was either between 155 VAC and 176 VAC, which is below the acceptable threshold, or 0 VAC, indicating a complete loss of that leg. The oven shuts down to prevent damage from operating on insufficient power. The fault is most often traced to the home's electrical supply, breaker, or wiring connections rather than to the oven itself.
Is it safe to use my Wolf oven when the E60/U1 error is displayed?
No, you should not attempt to use the oven while this error is active. An undervoltage condition on one leg of the power supply can cause heating elements and electronic components to operate outside their design parameters, which can lead to component damage or, in some cases, overheating of wiring connections. The oven has faulted out specifically to prevent operation under these conditions.
How much does it cost to repair a Wolf oven with an E60/U1 error?
Repair cost depends entirely on where the fault originates. If the issue is a tripped breaker, there may be no cost beyond a service call fee, typically in the range of $75 to $150. If an electrician is needed to repair or replace wiring or a breaker, costs generally range from $150 to $400 or more depending on the scope of work. If the oven's control board needs replacement, parts and labor can range from $400 to $900 or higher depending on the specific model.
Can I fix E60/U1 myself, or do I need a professional?
You can start by checking the circuit breaker at your electrical panel and resetting it if it appears tripped. However, diagnosing and repairing electrical supply issues involving 240 VAC circuits carries serious shock risk and should be handled by a licensed electrician or qualified appliance technician. If the breaker is fine and the fault persists, do not continue troubleshooting live circuits without proper training and equipment.
Will resetting the oven clear the E60/U1 error code?
Resetting the oven by cycling the circuit breaker may temporarily clear the fault code, but the error will return if the underlying voltage issue has not been corrected. A reset does not fix a weak breaker, a loose connection, or a utility supply problem. Confirm that L2 voltage is within the correct range before returning the oven to service.

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