The short answer
02, 03 or 04 on a Wolf oven means the oven controller isn't reading the oven temperature correctly. Cycle the power once; if the code returns, it needs service.
The display reads 02, 03 or 04. These errors mean the oven controller is not reading the oven temperature correctly. They are not usually repairable by the customer.
What to do if you see 02, 03 or 04
- Turn off the breaker or unplug the range.
- After a minute, restore power.
- If 02, 03 or 04 comes back, contact your factory-authorized service centre.