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Error code reference

GE Dishwasher Error Code F58

Thermistor error

GE codesGE dishwasher codes

Thermistor error - thermistor is not functional.

First step from the service manual

Ensure thermistor harness is connected; if connected, measure resistance across connector J1102 pins 1 (RW) to 2 (WN). Replace heater assembly or heater top if faulty.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What F58 means on a GE dishwasher

The F58 error code indicates the control board has detected an out-of-range high reading from the dry heater thermistor. The thermistor is a temperature-sensing resistor mounted near the dry heater element. When its resistance value drops below the threshold that corresponds to a realistic temperature, the control board interprets this as an abnormally high temperature signal and halts drying operation to prevent damage. This can result from a shorted thermistor, a wiring fault that pulls the signal line low, or a failed control board misreading the circuit.

For homeowners: your dishwasher has a small sensor near the heating element that monitors temperature during the drying cycle. The dishwasher's computer detected that this sensor reported an impossibly high temperature reading, so it shut down the drying function and triggered the F58 code. The dishes may still wash normally, but drying will not function correctly until the fault is resolved.

The first place to check is the thermistor's wiring harness connector. A loose, corroded, or partially unseated connector can send a false signal to the control board. If the connector checks out, the thermistor itself should be tested for correct resistance at room temperature. A shorted thermistor reads near zero ohms and must be replaced.

Source: manufacturer service documentation.

Common causes of F58

  1. 01

    Disconnected or poorly seated thermistor harness connector

    Wiring / connection

    If the wiring harness connector to the dry heater thermistor is loose or not fully seated, the control board can receive a false low-resistance signal it interprets as an out-of-range high temperature. Reseating the connector fully and checking for bent terminals inside the housing often resolves the code without replacing any parts.

  2. 02

    Shorted or failed dry heater thermistor

    Part replacement

    A thermistor that has shorted internally will read near zero ohms, which the control board registers as an extreme high-temperature condition and triggers F58. Testing the thermistor with a multimeter and comparing the reading to the specified resistance range for room temperature will confirm whether the part has failed.

  3. 03

    Damaged or shorted wiring between thermistor and control board

    Part replacement

    Chafed, pinched, or melted wiring in the harness between the dry heater thermistor and the control board can create a short circuit that mimics a failed thermistor. Visually inspecting the harness routing along the door and tub for any signs of heat damage or pinching can identify this fault.

  4. 04

    Failed control board

    Part replacement

    If the thermistor and its wiring harness both test within spec, the control board itself may be misreading the thermistor circuit due to a failed input component on the board. This is the least likely cause and should only be suspected after the thermistor and wiring have been confirmed good.

See the test procedure for each cause

Frequently asked questions about F58

What does the F58 error code mean on a GE dishwasher?
F58 means the control board detected an out-of-range high reading from the dry heater thermistor, which is the temperature sensor near the drying heating element. The board received a resistance value so low it corresponds to an unrealistically high temperature, so it shut down the drying function. The cause is usually a loose wiring connector, a shorted thermistor, or damaged wiring in the harness.
How do I fix the F58 error code on my GE dishwasher?
Start by unplugging the dishwasher and locating the dry heater thermistor harness connector. Unplug it, inspect the terminals for bending or corrosion, reseat it firmly, and run a test cycle. If F58 returns, use a multimeter to test the thermistor's resistance at room temperature and compare it to the value listed in your model's service manual. A reading near zero ohms confirms a shorted thermistor that needs replacement. If the thermistor reads correctly, inspect the wiring harness for damage before suspecting the control board.
Can I still use my GE dishwasher when the F58 code is active?
The wash cycles may still run, but the drying function will not operate normally while F58 is active because the control board has detected a fault in the dry heater thermistor circuit. Running the dishwasher in this state carries some risk, since the heater circuit's thermal protection is compromised. It is best to resolve the fault before continued use, particularly if you notice any burning smell or the dishwasher behaving erratically during cycles.
How much does it cost to fix an F58 error on a GE dishwasher?
If only the thermistor needs replacement, the part typically costs between $15 and $40 depending on the model, and replacing it is a moderate DIY repair requiring basic hand tools and a multimeter. If a technician is needed, expect a service call fee of $80 to $150 plus parts and labor, bringing the total to roughly $150 to $250. A failed control board is the most expensive scenario, with parts alone ranging from $100 to $300.
How do I test the dry heater thermistor on a GE dishwasher showing F58?
Disconnect power to the dishwasher, then locate and unplug the thermistor connector. Set a multimeter to measure resistance (ohms) and probe the two thermistor terminals. At room temperature, a good thermistor will read within the resistance range specified in your model's technical service sheet, commonly several thousand ohms for NTC-type thermistors. A reading near zero indicates a short and confirms the thermistor has failed and needs replacement. Your model's service manual will have the exact resistance specification.

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