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Error code reference

Whirlpool Microwave Error Code F2-E2

Oven temp too high

Whirlpool codesWhirlpool microwave codes

Oven temp too high - over 575°F (302°C) in COOK mode.

First step from the service manual

Disconnect power or unplug oven, check sensor connection, measure sensor resistance, check for welded-closed relays on control.

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

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What F2-E2 means on a Whirlpool microwave

The F2-E2 error code on a Whirlpool microwave indicates that the oven cavity temperature has exceeded 575 degrees Fahrenheit (302 degrees Celsius) while the unit is operating in COOK mode. The control board monitors cavity temperature continuously through a dedicated thermal sensor, and when the sensor reports a value above this threshold, the control triggers the fault code and interrupts operation to prevent damage or a fire hazard. This is a protective shutdown, not a nuisance fault.

The thermal sensor is typically a negative temperature coefficient (NTC) thermistor, meaning its resistance decreases as temperature increases. If the sensor itself has failed with an internal short, it can report falsely elevated temperatures even when the cavity is at a normal operating temperature. Conversely, a genuine overheat condition can occur if the cooling fan has failed, if the door seal is compromised, or if the magnetron is running excessively hot. Checking the sensor's resistance value against the specification for the measured ambient temperature is a critical first diagnostic step.

Another significant cause is a welded relay on the control board. Relays that control magnetron power can weld closed due to arcing, causing the magnetron to run continuously without the control board being able to interrupt it. This produces a real overheat condition that will trigger F2-E2. After disconnecting power, inspecting the relay contacts on the control board for signs of welding or heat damage is essential before assuming the sensor is at fault.

Source: manufacturer service documentation.

Common causes of F2-E2

  1. 01

    Failed thermal sensor (shorted)

    Part replacement

    A shorted NTC thermistor will report falsely high temperatures to the control board even when the cavity is cool. Disconnect power and measure the sensor's resistance to determine if it has failed.

  2. 02

    Welded relay on control board

    Part replacement

    A relay contact that has welded closed will allow the magnetron to run continuously, causing a genuine overheat condition. Inspect the control board relay contacts for heat damage or welding after disconnecting power.

  3. 03

    Poor or disconnected sensor wiring

    Wiring / connection

    A loose connector or damaged wiring harness between the thermal sensor and the control board can cause erratic or out-of-range resistance readings. Check the sensor connection and inspect the harness for chafing or corrosion.

  4. 04

    Cooling fan failure

    Part replacement

    If the internal cooling fan is not operating, heat from the magnetron and other components cannot be dissipated, leading to a real overheat condition. Verify that the fan runs during microwave operation.

  5. 05

    Control board failure

    Part replacement

    If the sensor, wiring, relay contacts, and cooling system all check out correctly, the control board itself may be misreading sensor input or malfunctioning internally. This is typically diagnosed after all other causes have been ruled out.

See the test procedure for each cause

Frequently asked questions about F2-E2

What does F2-E2 mean on a Whirlpool microwave?
F2-E2 means the control board detected an oven cavity temperature above 575 degrees Fahrenheit (302 degrees Celsius) while the microwave was in COOK mode. The unit shuts down automatically as a safety measure. The cause can be either a genuinely overheated cavity or a faulty thermal sensor reporting an incorrect temperature. The unit should not be used until the fault is diagnosed and resolved.
Can I reset the F2-E2 error code by unplugging the microwave?
Unplugging the microwave may clear the displayed code temporarily, but if the underlying cause is still present, the fault will return during the next cook cycle. A welded relay or shorted sensor will continue to trigger F2-E2 regardless of resets. Resetting without diagnosing the root cause is not a reliable fix and can be a safety risk.
Is it safe to use my Whirlpool microwave while it shows F2-E2?
No. The F2-E2 code indicates a potential overheat condition, and continuing to use the microwave before resolving the fault could result in damage to internal components or a fire hazard. A welded relay, in particular, can cause the magnetron to run uncontrolled. Keep the microwave unplugged until the fault is properly diagnosed.
How do I fix a Whirlpool microwave showing F2-E2?
Start by disconnecting power, then check the thermal sensor connection and measure the sensor's resistance to confirm it is reading correctly. Inspect the control board for any relays that appear burned or welded closed. Also verify the cooling fan operates properly. Depending on the findings, the repair will involve replacing the thermal sensor, the control board, or the cooling fan.
How much does it cost to repair a Whirlpool microwave with an F2-E2 error?
Repair costs vary depending on which component has failed. A replacement thermal sensor is typically the least expensive fix, with parts generally ranging from $15 to $50. A control board replacement is more costly, usually falling in the range of $80 to $200 or more for the part alone. Adding professional labor will increase the total cost, and for older or lower-priced units, replacement may be more economical than repair.

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