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Error code reference

Amana Range Error Code F3

Open wire lead in sensor harness, bad harness/sensor connection, or sensor resistance too high (above 3300…

Amana codesAmana range codes

Open wire lead in sensor harness, bad harness/sensor connection, or sensor resistance too high (above 3300 ohms).

First step from the service manual

Check sensor wire harness connections and measure sensor resistance; replace sensor if resistance is above 3300 ohms.

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

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What F3 means on a Amana range

The F3 error code on an Amana range indicates the control board has detected an open circuit in the oven temperature sensor circuit. This means the board sent a signal through the sensor loop and received no return, which points to a broken electrical path somewhere between the control board and the oven temperature sensor (also called an RTD probe). The control board monitors sensor resistance continuously; an open circuit reads as infinite resistance, which is outside the acceptable operating range and triggers the fault.

For homeowners, the oven temperature sensor is a thin probe mounted inside the oven cavity, usually at the back wall. It tells the control board how hot the oven actually is so the board can regulate the heating elements. When this sensor or its wiring loses continuity, the board has no way to monitor oven temperature safely and shuts down oven operation to prevent overheating. The break in the circuit can be in the sensor probe itself, the wiring harness connecting it to the board, or a corroded or loose connector at either end. Checking resistance with a multimeter at the sensor and along the harness is the first step to isolating which component has failed.

Source: manufacturer service documentation.

Common causes of F3

  1. 01

    Failed oven temperature sensor (RTD probe)

    Part replacement

    The sensor probe itself has an internal break, causing infinite resistance across its terminals. This is the most common cause of F3 and is confirmed by measuring resistance at the sensor connector; a healthy sensor reads approximately 1080 ohms at room temperature.

  2. 02

    Broken or damaged wiring harness

    Part replacement

    The wires running from the oven temperature sensor to the control board can crack, burn, or break, especially near the oven cavity where heat exposure is high. A visual inspection and continuity test along the full harness length will identify an open section.

  3. 03

    Loose or corroded connector

    Wiring / connection

    The connector pins at the sensor end or the control board end can corrode, back out, or lose contact, creating an open circuit without any wiring damage. Unplugging and reseating the connectors, and cleaning corroded pins, can resolve this without replacing parts.

  4. 04

    Faulty control board

    Part replacement

    If the sensor and entire wiring harness test within spec, the control board's sensor input circuit may have failed internally. This is the least likely cause and should only be considered after the sensor and wiring are confirmed good.

See the test procedure for each cause

Frequently asked questions about F3

What does F3 mean on an Amana range?
F3 on an Amana range means the control board detected an open circuit in the oven temperature sensor circuit. The sensor, also called an RTD probe, or its wiring has lost continuity, so the board cannot read oven temperature. The oven will not operate normally until the fault is resolved.
How do I fix F3 on my Amana range?
Start by unplugging the range and locating the oven temperature sensor at the back wall of the oven cavity. Disconnect the sensor and measure its resistance with a multimeter; it should read around 1080 ohms at room temperature. If resistance is infinite or far outside spec, replace the sensor. If the sensor tests good, trace the wiring harness back to the control board and check for breaks, burns, or loose connectors.
Can I still use my Amana range with an F3 error code?
The oven function will be disabled or unreliable while F3 is active because the control board cannot monitor oven temperature safely. Using the oven in this condition risks uncontrolled overheating. Surface burners on a gas or electric range may still function depending on the model, but the oven should not be used until the sensor circuit is repaired.
How much does it cost to fix an F3 error on an Amana range?
An oven temperature sensor for an Amana range typically costs between $20 and $60 for the part, and replacing it is a DIY-friendly repair that requires only a screwdriver and multimeter. If a wiring harness needs replacement, parts run $30 to $80. If the control board is the cause, parts cost $100 to $250 or more, and professional labor adds $100 to $200 depending on your area.
How do I test the oven temperature sensor to diagnose F3 on an Amana range?
Unplug the range, then remove the two screws holding the sensor probe to the back wall inside the oven cavity. Pull the sensor forward enough to disconnect its wiring harness. Set a multimeter to resistance (ohms) and probe both sensor terminals. At room temperature, a good sensor reads approximately 1080 ohms. An open line (OL) or infinite reading confirms the sensor has failed and needs replacement.

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