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Error code reference

Maytag Oven Error Code F3E0

Main Sensor Open or Shorted (Upper)

Maytag codesMaytag oven codes

Main Sensor Open or Shorted (Upper) – the main control has detected an upper cavity temperature reading >995°F (535°C) or <0°F (-18°C).

First step from the service manual

Unplug range or disconnect power, inspect main control connector P10 for backed out terminal or loose connection.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F3E0 means on a Maytag oven

The F3E0 error code on a Maytag oven indicates that the main control board has detected an out-of-range temperature reading from the upper cavity sensor, also called the oven temperature sensor or RTD (resistance temperature detector). The control expects readings within a normal operating window. When the sensor signal falls below the equivalent of 0°F (-18°C) or exceeds 995°F (535°C), the control flags an open or short circuit condition. An open circuit typically means the sensor circuit has been broken, producing an abnormally high resistance reading. A short circuit means two conductors in the sensor circuit are making unintended contact, producing abnormally low resistance and an inflated or erratic temperature signal.

The upper cavity sensor is a two-wire resistive probe mounted inside the oven cavity, usually on the rear wall. Its resistance changes predictably with temperature, allowing the control board to calculate the actual cavity temperature. The wiring from this sensor runs back through the oven chassis to connector P10 on the main control board. Any fault along this path, including a loose pin at P10, a damaged harness, or a failed sensor, will produce the F3E0 fault.

The first diagnostic step is to disconnect power to the range and physically inspect connector P10 at the main control board for backed-out terminals or a loose connection. This rules out an intermittent wiring issue before replacing components. If the connector is secure, the next steps involve checking sensor resistance and inspecting the harness for damage between the sensor and control board.

Source: manufacturer service documentation.

Common causes of F3E0

  1. 01

    Loose or Backed-Out Terminal at Connector P10

    Wiring / connection

    The wiring harness connector P10 at the main control board can develop loose or backed-out pins over time, interrupting the sensor signal. Unplugging the range and reseating this connector is the first recommended diagnostic step.

  2. 02

    Failed Upper Cavity Temperature Sensor

    Part replacement

    The RTD temperature sensor probe inside the upper oven cavity can fail open or short internally, producing a reading outside the acceptable range. A failed sensor typically needs to be replaced to resolve the fault.

  3. 03

    Damaged Sensor Wiring Harness

    Part replacement

    The two-wire harness running from the upper cavity sensor to the main control board can be pinched, burned, or broken, especially near the oven cavity opening or along routing points. Visually inspecting the harness for cuts, melted insulation, or breaks can confirm this cause.

  4. 04

    Corroded or Oxidized Connector Pins

    Wiring / connection

    Moisture or heat cycling can cause corrosion on the sensor connector pins, increasing resistance in the circuit and causing the control board to read the signal as out of range. Cleaning the connector contacts may restore the circuit.

  5. 05

    Faulty Main Control Board

    Part replacement

    If the sensor and all wiring check out correctly, the main control board itself may have developed a fault in the circuit that reads the sensor input. Control board failure is the least common cause and should be diagnosed only after ruling out the sensor and harness.

See the test procedure for each cause

Frequently asked questions about F3E0

What does F3E0 mean on a Maytag oven?
F3E0 means the main control board has detected an upper cavity temperature reading that is either above 995°F (535°C) or below 0°F (-18°C), which indicates an open or shorted condition in the upper oven temperature sensor circuit. This is not a normal operating temperature reading but rather a signal that something is wrong with the sensor, its wiring, or the connector at the control board. The oven will not function normally while this fault is active.
Can I fix the F3E0 error myself?
Some causes of F3E0 are DIY-friendly, particularly if the fault is caused by a loose connection at connector P10 on the main control board. Disconnecting power and reseating the connector requires no special tools. Replacing the upper cavity temperature sensor is also a relatively straightforward repair for experienced DIYers, as the sensor is typically secured with one or two screws and connects with a simple harness plug.
Is it safe to use my Maytag oven when F3E0 is displayed?
You should not continue using the oven while F3E0 is active. The control board relies on the upper cavity sensor to regulate temperature accurately and safely. Without a valid sensor reading, the oven cannot control heating elements properly, which creates a risk of overheating. Disconnect the oven from power until the fault is diagnosed and repaired.
Will resetting the oven clear the F3E0 error code?
Unplugging the oven or disconnecting the circuit breaker for a few minutes may temporarily clear the F3E0 code, but it will return if the underlying problem is not fixed. If the sensor or wiring is genuinely faulty, the control board will detect the out-of-range signal as soon as power is restored and the code will reappear. A reset is only useful as a diagnostic step to confirm the fault is recurring, not as a fix.
How much does it cost to repair an F3E0 error on a Maytag oven?
Repair costs vary depending on which component has failed. A replacement upper cavity temperature sensor typically runs in the range of $20 to $60 for the part alone. A main control board is significantly more expensive, often in the $150 to $350 range for the part. Adding professional labor costs will increase the total, so a complete repair by a technician could range from around $100 to $500 or more depending on the failed component and local labor rates.

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