KitchenAid Oven Error Code F48

F48 indicates that the oven's IPC control board has detected an incorrect internal reference voltage called Vref_2. This reference should measure 2.5V and is used by the board's circuitry to accurately read sensor inputs. When the voltage deviates from 2.5V for 12 or more seconds, the board logs the F48 fault. The issue is rooted in the control board's internal electronics or in a load circuit connected to the board.

An F48 fault indicates the control board's measurement reference circuit is not functioning correctly, which means the board may not be accurately reading temperature or other sensor inputs. Using the oven in this state could result in unreliable temperature control. It is recommended to discontinue use and have the oven serviced before operating it again.

Repair costs depend on the root cause. If the fault is caused by a wiring or connector issue, a service call may range from $100 to $200 for diagnosis and repair labor. If the IPC control board requires replacement, parts and labor combined typically range from $250 to $500 or more depending on the specific model and local labor rates. Getting a diagnostic estimate before authorizing parts replacement is advisable.

The F48 fault clears automatically once the control board detects the correct 2.5V reference for at least 12 consecutive seconds. Simply cycling power may temporarily clear the display, but the code will return if the underlying voltage reference problem is not resolved. A lasting repair requires identifying and correcting the cause, such as a faulty connected load or a defective IPC board.

Start by switching off all loads connected to the IPC board except the IPC power relay itself. If the fault clears within 12 seconds, the problem is in one of the load circuits rather than the board's internal reference generator. Reconnect loads one at a time to identify the faulty circuit. If the fault persists with all loads removed, the IPC control board itself is the likely failed component.