GE Dishwasher F16 Error Code: High Water Temperature Fixes

Water still moves through the machine, but F16 sends you looking for a fault. The GE dishwasher F16 error code concerns high water temperature on the covered 2016 stainless-steel-tub LCD top-control platform. Buying a drain pump from that warning alone can miss the problem.

Is the water actually too hot, or is the sensor reporting it incorrectly? That distinction comes before choosing a part. Covered families include PDT845SxJ0xx and CDT835SxJ0xx, with x marking model variations.

The checks below explain the safe response, temperature-sensor diagnosis, and repair choices. Match the full label and technical sheet before using any connector or resistance value.

Quick Facts

Use these details to plan the work:

• Difficulty: Temperature-circuit diagnosis requiring model-specific information
• Time: Varies with the sensor arrangement and access
• Tools: Suitable drivers and multimeter used only on an isolated circuit
• Part cost: Varies with the sensor arrangement
• Skill level: Owner tasks include recording the code and stopping use when overheating is suspected; internal checks require model-specific information

What Does the GE Dishwasher F16 Error Code Mean?

F16 is a high-water-temperature fault on the covered platform. Check the sensor signal first. The water may be too hot, or the control may be getting a false report.

Keep these functions separate.

• Thermistor: Changes electrical resistance with temperature.
• Harness: Carries that temperature signal to the control.
• Control board: Reads the signal and directs heating.
• Drain pump: Removes water and is not the part identified by this code definition.

The same brand can use different code systems across generations. Match the code to the complete model instead of applying a number from another GE dishwasher or appliance.

What Causes an F16 Error on a GE Dishwasher?

Check the sensor, plugs, and control for a high-heat report. The water can be too hot. The sensor can also be wrong.

Use the observations to guide the diagnosis.

How can a cool sensor report excessive heat? An electrical fault can make the signal wrong even when the water temperature is normal. Compare the ohm reading with the sensor’s real temperature. A room-temperature value is wrong for a hot part.

How Do You Reset a GE Dishwasher Showing F16?

Follow these steps to respond safely before attempting another wash.

Stop, Cool, and Record the Fault

1. Cancel the active cycle using the model’s controls if this can be done safely.
2. Disconnect power and let the appliance cool before opening access panels or reaching internal parts.
3. Record F16, other faults, and when the code appeared.
4. Arrange diagnosis if overheating is suspected or the code returns.

The GE dishwasher F16 error code should not be repeatedly reset while a heating fault remains. A power reset can restart the control. It cannot fix a bad sensor or keep a faulty circuit from failing again.

A consumer error display is also different from a repair. Reading old codes does not prove the machine is safe. A clear display does not replace a heat check.

How to Check the GE Dishwasher Temperature Sensor and Wiring for F16 Step by Step

Follow these steps only for the matching 2016 design, with power disconnected before resistance testing.

Phase 1: Confirm the Model and Inspect the Thermistor Harness

1. Confirm that the model’s fault table defines F16 as high water temperature.
2. Disconnect power, close the water supply, and let the dishwasher cool.
3. Open the correct service access. Check the sensor circuit for loose, wet, corroded, or damaged contacts.
4. Repair a confirmed harness fault before ordering a control board.

Phase 2: Measure Thermistor Resistance at the Correct Temperature

1. Identify the thermistor test points from the exact wiring diagram; on the covered design they are J711 pins 7 and 8.
2. Isolate the circuit from the control as specified and set the meter to resistance.
3. Measure the sensor’s real temperature. Compare the ohms with the matching chart.
4. Use about 10,450 ohms at 75°F only as the example value for this covered chart, not every GE sensor.
5. Test the sensor itself when the service steps call for it. This can separate a bad sensor from a bad wire.

Phase 3: Replace the Confirmed Failed Part and Verify Operation

1. Replace a failed thermistor or sensor assembly with the exact model-compatible part.
2. For the covered sump-mounted combined sensor, drain the sump, unplug the harness, turn the sensor counterclockwise, and remove it.
3. Fit the correct assembly and seal, turn clockwise to lock, and reconnect the harness.
4. Reassemble all panels and restore water before checking for leaks.
5. Restore power for the specified service verification only after safe reassembly.
6. Have the control diagnosed if the sensor and harness pass but the high-temperature fault remains.

Never check resistance on an energized dishwasher. A sensor measurement is also not a reason to bypass a temperature safety device. Leave any powered heater-output checks and control repairs to someone trained for that work.

What Are the Related GE Dishwasher Error Codes?

These meanings apply to the same models. They help keep sensor, heat, and drain faults separate.

Should You Replace the Sensor, Control, or Dishwasher?

The GE dishwasher F16 error code should lead to the part supported by temperature and circuit checks. A sound sensor reading helps. A loose plug or a fault that comes and goes can still need repair.

Compare the choices after diagnosis.

• Harness repair: Appropriate for confirmed damage or a poor connection.
• Thermistor or combined sensor: Appropriate when its isolated reading fails the correct chart.
• Main control: A later choice after the sensor, harness, and temperature conditions have been verified.
• Whole dishwasher: Compare replacement when several major faults or substantial water damage make the full repair costly.

Ask for the part number and full repair quote. A drain-pump price does not describe this sensor fault.

FAQ

When Should You Call a Technician for F16?

Call when overheating is suspected, wiring is damaged, or the correct test points cannot be identified. A recurring fault after the sensor checks also needs further service.

Does F16 Mean the Dishwasher Cannot Drain?

Not on the platform covered here. Its F16 definition concerns high water temperature, so a separate drain symptom must be diagnosed on its own.

Can a Power Reset Prove the Temperature Problem Is Fixed?

No, a reset only restarts the control. Check the heat and normal operation after repair. The code should no longer return.

Correct Temperature Readings and a Clear F16 Fault

The GE dishwasher F16 error code is a reason to check temperature sensing on the matching model. Fix a proven sensor or wire fault before guessing at the control.

Find the correct temperature sensor or harness for your full GE model number once the failed part is confirmed.