JennAir Dishwasher F1E1 Error Code: Causes & Fix

What is the JennAir Dishwasher F1E1 error?#

F1E1 means the water temperature sensor — the thermistor — has gone open-circuit, so the control can no longer confirm how hot the water is. The clearest sign is cycles that run far longer than normal, sometimes stretching past three hours, because the machine keeps waiting for a reading it can never get. It is not a hazard, just a sensor fault that wrecks cycle timing, and the diagnosis starts at the thermistor in the sump.

F1E1 on a JennAir Dishwasher: likely causes and repair cost#

On a JennAir Dishwasher, the F1E1 code signals: water temperature sensor (thermistor) open.

Typical professional repair: $90–$220 · Difficulty: moderate · usually a technician job

Symptoms that often accompany F1E1: Cycles run far longer than normal; Water temperature seems wrong; A normal program stretches past three hours; Sanitizing never seems to complete

Technician diagnostic sequence for F1E1:

1. Find the thermistor in the JennAir sump near the wash pump and disconnect its leads
2. Measure resistance across the sensor, expecting roughly fifty-five thousand ohms at room temperature for this negative-coefficient type
3. An open or infinite reading confirms a failed thermistor that must be renewed
4. Trace the sensor harness for a break, paying attention to where it routes past the hot sump housing

Parts a technician may check or replace: Thermistor / water-sensor assembly; Sensor harness

Field note: JennAir often combines the thermistor with the optical water sensor in one sump module, so an open thermistor pushes the dishwasher into extended run times because it can no longer confirm water temperature — check the combined assembly rather than a standalone probe.

How to troubleshoot the F1E1 error yourself#

There is little safe self-repair here, since the sensor sits in the sump near the wash pump amid water and wiring. A technician disconnects its leads and measures resistance — roughly fifty-five thousand ohms at room temperature for this negative-coefficient type — with an open reading confirming a failure, then traces the harness for a break where it routes past the hot sump housing. That is the proper diagnosis. One point specific to these machines: the thermistor is often combined with the optical water sensor in a single sump module, so an open one is checked and renewed as that combined assembly rather than a standalone probe. If cycles are dragging endlessly, book service rather than repeatedly restarting.

Is the JennAir Dishwasher F1E1 error worth fixing?#

F1E1 is worth fixing and is one of the cheaper faults on this dishwasher. A sensor repair runs $90 to $220 — the thermistor or combined module and occasionally its harness — and it restores normal timing on a machine that is otherwise sound. Against a premium JennAir costing many times that to replace, the work is a clear yes. Because the sensor is often part of a combined module, a technician confirms the assembly before ordering, keeping the fix accurate. Endless cycles are no reason to replace a good dishwasher.

JennAir Dishwasher F1E1: frequently asked questions#

What does the F1E1 error mean on a JennAir Dishwasher?#

It is an open water temperature sensor, or thermistor, fault. The sensor has failed open, so the machine cannot confirm water temperature and runs cycles far longer than normal while it waits for a reading that never comes.

Is it safe to keep using a JennAir Dishwasher that shows the F1E1 error?#

There is no hazard, but the dishwasher runs endlessly long cycles and may not sanitise properly, so it is of little use as-is. Better to have the thermistor checked than to keep running programs that stretch past three hours.

Can I clear the F1E1 error myself, or do I need a technician?#

Testing the sump thermistor is really a technician task, since it sits amid water and wiring. There is no owner reset for an open sensor, so a persistent code means calling for service to measure and renew it.

How much does it cost to repair the F1E1 error on a JennAir Dishwasher?#

A sensor repair runs about $90 to $220, covering the thermistor or combined module and sometimes its harness. A technician confirms the open reading and whether it is a combined part before ordering.

Which parts usually fail when a dishwasher throws the F1E1 code?#

The thermistor usually leads, open-circuit, along with broken sensor wiring or a corroded sump connector. It is often part of a combined water-sensor module, which is replaced as one assembly.

Is a JennAir Dishwasher with the F1E1 error worth repairing?#

Yes. At $90 to $220 the fix restores normal timing on a premium machine built to last, far below a new dishwasher. Because the sensor is often a combined module, a technician confirms the assembly to keep the work accurate.

Why does thermistor failed open trigger the F1E1 error?#

The thermistor reports water temperature by its resistance. When it opens, the control loses that reading and cannot confirm the water has heated, so it stretches the cycle waiting and raises F1E1 to flag the dead sensor.