The F3 error on your Maytag Washer means the control board has detected that the water temperature sensor circuit is open, so it cannot read the temperature of the water entering or inside the tub. This usually points to a wiring or sensor problem rather than a serious mechanical fault, and it can often be fixed without calling a technician.

Error code F3
Meaning Temperature sensor (thermistor) circuit open — the control board is not receiving a valid signal from the sensor
Severity Medium — the washer may pause cycles or fill with the wrong water temperature until fixed
Time to fix 20–45 minutes
Tools needed Multimeter, screwdriver (Phillips and flathead)

What the F3 error means

Maytag washers use a temperature sensor to monitor water temperature so the correct wash cycle settings are applied. When this sensor’s circuit is “open,” it means there is no continuity — either the sensor itself has failed, the wiring has come loose or corroded, or the connector at the control board has a poor connection. The washer’s control board detects this break in the circuit and displays the F3 code to alert you.

Common causes

  • Temperature sensor (thermistor) has failed or degraded over time
  • Loose or disconnected wiring harness at the sensor or control board
  • Corroded or damaged connector pins from moisture exposure
  • A pinched or frayed wire caused by vibration during wash cycles
  • Faulty main control board unable to read sensor signals correctly
  • Residual moisture inside the wire harness plug causing a short or open circuit

How to fix the F3 error

  1. Unplug the washer: Disconnect power before opening any panels to avoid electric shock.
  2. Locate the temperature sensor: Depending on your model, this is usually near the water inlet valve or attached to the tub. Check your owner’s manual for the exact location.
  3. Inspect wiring and connectors: Look for loose plugs, corrosion, or visible damage. Reseat any loose connectors firmly.
  4. Test the sensor with a multimeter: Check resistance readings against the manufacturer’s specifications. A reading of infinite resistance (open circuit) confirms sensor failure.
  5. Replace the sensor if faulty: If the sensor fails the resistance test, replace it with an OEM Maytag part matching your model number.
  6. Restore power and run a test cycle: Plug the washer back in and run a short cycle to confirm the F3 code has cleared.

If you’re troubleshooting other Maytag fault codes at the same time, it helps to compare symptoms. The Maytag Washer F1 Error Code: Causes and Fixes guide covers control board faults, while the Maytag Washer F2 Error Code: Causes and Fixes page explains motor-related issues. For a deeper dive specifically into this fault, see the Maytag Washer F3 Error Code: Causes and Fixes reference, and if your washer also throws speed sensor errors, check the Maytag Washer F5 Error Code: Causes and Fixes article for related troubleshooting steps.

FAQ

Can I keep using my washer with an F3 error showing?
It’s best not to. The washer may not fill with the correct water temperature, which can affect cleaning results and, in some cases, stop the cycle partway through.

Do I need a professional to fix this?
Not always. If the issue is a loose wire or connector, most homeowners can fix it themselves. Sensor replacement is also straightforward if you’re comfortable using a multimeter and basic tools.

How much does a replacement temperature sensor cost?
OEM Maytag temperature sensors typically cost between £15–£40 ($20–$50) depending on the model, plus labor if you hire a technician.