Maytag Dishwasher Error Code F1E2 — What It Means & How to Fix It

What Does This Error Mean?

F1E2 means the NTC temperature sensor inside your Maytag dishwasher has detected water coming in at a temperature higher than the machine's maximum safe inlet limit. Very hot water can damage the door seal and interior tub over time. A water heater set above 140°F (60°C), or a failed temperature sensor reporting a false high reading, are the two most common causes.

Affected Models

Maytag MDB7959SHZ
Maytag MDB4949SHZ
Maytag MDB8959SFZ
Maytag MDB Series

Common Causes

Household water heater is set above 140°F (60°C), sending water that exceeds the dishwasher intake limit
NTC temperature sensor inside the dishwasher has failed and is reporting a false high reading
Hot water supply line to the dishwasher is routed too close to the water heater, arriving at a higher temperature than expected
Wiring to the NTC sensor is damaged or shorted, causing an incorrect temperature signal
Control board is misinterpreting the sensor signal

How to Fix It

Check the temperature setting on your home water heater. Lower it to 120°F (49°C) if it is set higher.

The dishwasher's recommended inlet temperature is between 120°F and 140°F. Water above 140°F triggers F1E2 as a safety protection.
Run the hot water tap at the kitchen sink for 30 seconds before starting the dishwasher.

Running the tap flushes cooler standing water from the supply line. This also lets you feel whether the water is unusually hot.
Run a wash cycle and check whether F1E2 returns after adjusting the water heater.

If the error clears after lowering the water heater temperature, the inlet temperature was the cause — no parts replacement needed.
If F1E2 returns even after lowering the water heater temperature, have a technician test the NTC sensor.

A failed NTC sensor that reads high will trigger F1E2 regardless of actual inlet temperature. The sensor must be replaced to resolve it.

When to Call a Professional

If lowering the water heater setting does not resolve F1E2, the NTC sensor inside the dishwasher likely needs to be tested and replaced. A technician can read the sensor's resistance value to confirm whether it is reporting accurately.

Frequently Asked Questions

What is the ideal water temperature for a Maytag dishwasher?

Maytag recommends an inlet water temperature between 120°F (49°C) and 140°F (60°C). Below 120°F and the water may not clean effectively. Above 140°F and F1E2 may appear.

Can F1E2 cause damage to the dishwasher?

Repeated exposure to water above 140°F can degrade the door gasket and interior plastic components over time. F1E2 is a protective fault that prevents this — fix the root cause rather than ignoring the error.

How much does an NTC sensor replacement cost?

A replacement NTC temperature sensor for a Maytag dishwasher typically costs $20 to $50 for the part. With technician labor, the total repair usually runs $100 to $180.