F3E1 Serious Moderate DIY

Amana Dishwasher F3E1 — Thermistor / OWI Sensor Failure

Amana Dishwasher · Error code F3E1

What F3E1 Means

The water temperature thermistor or Optical Water Indicator (OWI) sensor is reading out of range.

Symptoms

  • Cycle stops early
  • Dishes not getting hot
  • Long cycle times
  • F3E1 displayed

Common Causes

1
Failed thermistor

Open or short circuit in the temperature sensor.

2
Dirty OWI sensor lens

Hard water film blocks the optical sensor.

3
Wiring harness damage

Connector loose or corroded at the sensor.

How to Fix It

  1. Run a cleaning cycle with a dishwasher cleaner to remove film from the OWI sensor.
  2. Disconnect power and access the sump area.
  3. Inspect and reseat the thermistor/OWI connector.
  4. Test thermistor resistance with a multimeter (should be ~50K ohms at room temperature).
  5. Replace the OWI/thermistor assembly if out of spec.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Amana dishwasher OWI sensor View on Amazon→ Common replacement Dishwasher cleaner tablets View on Amazon→

More Amana Dishwasher Codes

Clean Light Flashing 1 Time Clean Light Flashing 1x — Control Lockout Clean Light Flashing 7 Times Clean Light Flashing 7x — Heating Element Failure F1E1 F1E1 — Control Board Failure F2E1 F2E1 — Stuck Key on Control Panel F4E1 F4E1 — Door Switch Open F4E2 F4E2 — Door Switch Wiring Error

All Amana codes → All dishwasher codes →

Verified against manufacturer documentation: amana.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.