Maytag Refrigerator E1 Error: Freezer temp sensor fault
What Does Maytag Refrigerator Error Code E1 Mean? E1 on a Maytag refrigerator indicates a Freezer Temperature Sensor fault. The NTC thermistor clipped to the freezer evaporator coil sends a continuous resistance signal to the main control board so it can regulate the compressor and defrost cycles. When that signal falls outside the valid range […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. With E1 active the Maytag refrigerator cannot accurately regulate freezer temperature. The compressor may run in an uncontrolled manner and food safety cannot be guaranteed until the sensor is replaced.
Can I reset the code?
No. A power cycle clears E1 from the display momentarily, but the code returns as soon as the board rechecks the thermistor reading. The sensor or harness must be physically repaired.
When to stop immediately?
Stop if you notice: Freezer temperature display shows dashes and the compartment is visibly over- or under-cooling, E1 returns within minutes of a power cycle.
Symptoms You May Notice
Freezer temperature display reads dashes or an extreme value
The control panel shows "- -" or an unrealistic temperature because the board receives no valid signal from the freezer thermistor.
Compressor runs continuously or not at all
Without a valid temperature reading the board defaults to a failsafe mode — either running the compressor continuously (over-cooling) or shutting it off entirely (under-cooling).
Ice maker produces oversized or hollow ice cubes
Ice maker fill timing on Maytag MFI models is tied to freezer temperature data; a faulty sensor causes erratic fill cycles and poor ice quality.
Food partially thawed or over-frozen
Items are either too warm or excessively frozen because the control cannot regulate temperature accurately.
Possible Causes
Failed freezer thermistor
The NTC thermistor bead has drifted out of spec or failed open/shorted. Thermistors on Maytag MBF bottom-freezer and MRT top-freezer models are typically clipped to the evaporator coil and are replaceable without special tools.
DIY PossibleDamaged thermistor wire harness
The thin two-wire harness from the thermistor to the main board has a broken conductor or a connector that has backed out of its socket on the board.
DIY PossibleMain control board thermistor input circuit failure
The board's analog input for the freezer thermistor has failed, causing it to read the sensor incorrectly even when the thermistor itself is in spec.
Requires ProfessionalSafe Checks You Can Do
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1
Reseat the thermistor harness connector at the main board
Unplug the Maytag refrigerator. Remove the lower kick-plate grille (two clips) to access the main control board. Locate the small two-pin thermistor harness connector and press it firmly until it clicks fully seated. Restore power and check whether E1 clears.
On Maytag MBF bottom-freezer models the main board is located at the rear lower section of the cabinet. On MRT top-freezer models it is behind the fresh food compartment light board area.
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2
Test thermistor resistance with a multimeter
Unplug the refrigerator and disconnect the thermistor harness. Measure resistance across the two thermistor leads at room temperature (approx. 68–72 °F). A healthy NTC thermistor on Maytag models should read approximately 16,000–20,000 ohms at room temperature. An open circuit (OL) or a near-zero reading indicates a failed thermistor.
Consult the Maytag tech sheet taped inside the back panel or kick-plate for the exact resistance curve for your specific model number.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Thermistor reads correctly but E1 persists — main board input circuit likely failed
- Wiring harness shows chafed insulation or a broken conductor inside the jacket
- Model-specific tech sheet resistance values cannot be matched after thermistor replacement
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