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Error code reference

Frigidaire Cooktop Error Code E23

Keep warm key sensor defective.

Frigidaire codesFrigidaire cooktop codes

Keep warm key sensor defective.

First step from the service manual

Test cables and connections on main power/right front cook zone touch control.

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

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What E23 means on a Frigidaire cooktop

The E23 error code on a Frigidaire cooktop indicates that the keep warm key sensor has been detected as defective by the control system. The keep warm function is managed through a capacitive or resistive touch sensor embedded in the cooktop's touch control panel. When the control board polls this sensor during startup or operation and receives a signal that falls outside the expected parameters, it flags the sensor as faulty and displays E23 to alert the user and prevent unintended operation.

The touch control assembly for the right front cook zone integrates the keep warm key sensor into the main touch panel circuit. A defective reading can stem from a failed sensor element itself, damaged flex cables connecting the touch panel to the main control board, or corroded and loose connector pins at either end of the cable harness. Moisture intrusion from boilovers is a common contributing factor, as liquid can seep beneath the panel surface or into connector housings and cause persistent false sensor readings.

Diagnostic work should begin with a thorough inspection of all cables and connections on the main power and right front cook zone touch control, as directed. Check flex cables for kinks, burns, or tears and verify that all connectors are fully seated and free of corrosion. If the wiring and connections are intact and secure, the fault is likely internal to the touch control panel or the main control board itself, and component replacement will be necessary.

Source: manufacturer service documentation.

Common causes of E23

  1. 01

    Loose or damaged flex cable connection

    Wiring / connection

    The ribbon or flex cable connecting the touch panel to the main control board can become unseated, kinked, or torn over time. Inspect both ends of the cable and reseat connectors firmly before replacing any parts.

  2. 02

    Moisture or liquid contamination at connectors

    Wiring / connection

    Boilovers and steam can introduce moisture into the connector housings or beneath the touch panel, causing corrosion or short circuits that produce a false sensor fault. Look for residue or discoloration at connector pins.

  3. 03

    Failed keep warm touch sensor or touch panel

    Part replacement

    The capacitive sensor element for the keep warm key can fail internally, causing it to report an out-of-range signal to the control board. If cables and connections check out, the touch control panel assembly will need replacement.

  4. 04

    Defective main control board

    Part replacement

    If the touch panel and all wiring test as good, the main control board may be misreading or failing to properly interpret the sensor signal. This is a less common cause but should be considered after other components are ruled out.

See the test procedure for each cause

Frequently asked questions about E23

What does E23 mean on a Frigidaire cooktop?
E23 means the cooktop's control system has detected a defective keep warm key sensor in the right front cook zone touch control panel. The sensor is either sending an out-of-range signal or not responding at all. The fault can be caused by loose wiring, moisture damage, or a failed sensor or control component.
Can I fix the E23 error myself?
Some E23 faults can be resolved without replacing parts by inspecting and reseating the flex cables and connectors between the touch panel and the main control board. If the connections are secure and clean and the error persists, the touch control panel or main control board will need to be replaced, which requires moderate technical skill and comfort working with appliance electronics.
Is it safe to use my Frigidaire cooktop while E23 is displayed?
It is not recommended to continue using the cooktop with an active E23 fault. A defective sensor could potentially cause the keep warm zone to behave unpredictably. The cooktop should be serviced before regular use resumes to avoid any risk of unintended heating.
Will resetting the cooktop clear the E23 error?
A power reset, such as turning off the circuit breaker for one to two minutes and restoring power, may temporarily clear the display. However, if the underlying sensor, cable, or connection fault is still present, the E23 code will return during the next operation cycle. A reset alone is not a repair.
How much does it cost to repair a Frigidaire cooktop E23 error?
Repair costs vary depending on which component is at fault. If only a connection needs to be reseated, the cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing the touch control panel or main control board can bring the total repair cost to somewhere between $150 and $400 or more, depending on parts and labor rates in your area.

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