mypros+
Error code reference

GE Dishwasher Error Code F19

Minimum wash temperature not met.

GE codesGE dishwasher codes

Minimum wash temperature not met.

First step from the service manual

Check heater and thermistor.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for F19.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F19 means on a GE dishwasher

The F19 error code on a GE dishwasher indicates that the wash water did not reach the minimum required temperature within the expected time frame during a wash cycle. The dishwasher monitors water temperature using a thermistor, which reports real-time temperature readings to the control board. If the water fails to climb to the target threshold, the control board logs F19 and typically halts or interrupts the cycle to prevent inadequate cleaning performance.

The two primary components involved are the heating element and the thermistor. The heating element is responsible for raising water temperature during the wash and sanitize phases. If the element has failed, has high resistance, or has an open circuit, it will not produce sufficient heat. The thermistor monitors temperature and if it is reading inaccurately due to drift, damage, or a wiring fault, the control board may receive false low-temperature signals even when the water is adequately heated.

Additional contributing factors include low incoming water temperature from the household supply, a faulty control board that is not sending power to the heating element, or wiring harness issues between the thermistor, heater, and control board. Technicians should begin diagnosis by checking continuity and resistance on the heating element and verifying that the thermistor is producing accurate resistance values across its operating temperature range before condemning either component.

Source: manufacturer service documentation.

Common causes of F19

  1. 01

    Failed Heating Element

    Part replacement

    The heating element is the most common cause of F19. A burned-out or open-circuit element will not heat the water at all. Check for continuity across the element terminals; an open reading confirms failure.

  2. 02

    Faulty Thermistor

    Part replacement

    If the thermistor has drifted out of calibration or has an internal fault, it will report incorrect temperatures to the control board, triggering F19 even when the heater is functional. Verify the thermistor's resistance value matches expected specifications at a known water temperature.

  3. 03

    Wiring or Connector Issues

    Wiring / connection

    Damaged wiring, corroded terminals, or a loose connector between the thermistor, heating element, and control board can interrupt the temperature feedback loop. Inspect the harness for burn marks, corrosion, or disconnected plugs.

  4. 04

    Low Incoming Water Temperature

    Wiring / connection

    If the household hot water supply is set too low or the hot water heater is far from the dishwasher, cold water may enter the tub and the heater cannot compensate quickly enough. Running the hot water at the sink before starting a cycle can help rule this out.

  5. 05

    Defective Control Board

    Part replacement

    If the control board is not supplying proper voltage to the heating element during the heat cycle, the water will not reach temperature. This is typically diagnosed after the heater and thermistor have been confirmed functional.

See the test procedure for each cause

Frequently asked questions about F19

What does F19 mean on a GE dishwasher?
F19 on a GE dishwasher means the wash water did not reach the minimum required temperature during a cycle. The dishwasher tracks water temperature with a thermistor and expects the heating element to bring it up to a target threshold. When that threshold is not met in the allowed time, the control board triggers F19 and interrupts the cycle. The two components to inspect first are the heating element and the thermistor.
Can I fix the F19 error myself?
Some causes of F19 are DIY-friendly. Checking and tightening wiring connections, inspecting the harness for corrosion, and running hot water before starting the cycle costs nothing and requires no special tools. Testing the heating element for continuity and checking thermistor resistance requires a multimeter but is manageable for experienced DIYers. Replacing the heating element or thermistor involves working inside the dishwasher tub and disconnecting electrical components, so those with limited appliance repair experience may prefer to call a technician.
Is it safe to use my dishwasher while F19 is showing?
Running the dishwasher with an active F19 code means your water is not reaching proper wash temperatures, which reduces cleaning effectiveness and prevents sanitization. While it is unlikely to cause immediate harm to the appliance, dishes will not be properly cleaned, and bacteria may not be eliminated. It is best to resolve the fault before continuing regular use.
How much does it cost to repair a GE dishwasher F19 error?
Repair costs vary depending on the faulty component. A replacement thermistor typically runs in the range of $15 to $50 for the part alone. A new heating element generally costs between $20 and $80 in parts. If a control board replacement is needed, parts alone can range from $80 to $200 or more. Adding professional labor costs will increase the total, usually by $75 to $150 depending on your area and service provider.
Will resetting my GE dishwasher clear the F19 code?
A reset may temporarily clear the F19 code and allow the dishwasher to start a new cycle, but if the underlying problem with the heater or thermistor is still present, the code will return. Resetting by cutting power at the circuit breaker for a few minutes is a reasonable first step to confirm the fault is active and not a one-time glitch. If F19 reappears after a reset, a proper component diagnosis is required before the error will stay cleared.

Related GE dishwasher codes

All GE dishwasher codes
View all 222 GE dishwasher codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass