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Error code reference

Frigidaire Cooktop Error Code E3

Left Front zone control defective key sensor.

Frigidaire codesFrigidaire cooktop codes

Left Front zone control defective key sensor.

First step from the service manual

Test cables and connections between left side cook zones control and main power control.

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 E3 means on a Frigidaire cooktop

The E3 error code on a Frigidaire cooktop indicates a defective key sensor in the left front zone control. This sensor is part of the touch control interface that registers user input to activate and adjust the left front burner zone. When the cooktop's main power control module detects an abnormal signal or no signal from the left front zone key sensor, it logs E3 and may disable the affected zone to prevent unsafe operation.

The left front zone control communicates with the main power control board through a cable and connector assembly. A failure anywhere along this signal path, whether inside the key sensor itself, along the ribbon cable, or at the connector terminals, can trigger E3. Common culprits include damaged or corroded connector pins, a loose or partially seated cable, or a key sensor pad that has failed internally due to heat exposure or physical damage over time.

The first diagnostic step is to inspect and test the cables and connections between the left side cook zone control and the main power control board. Technicians should check for bent or corroded pins, cable continuity, and secure seating at both ends of the connector. If the cabling checks out and the fault persists, the left front zone control assembly itself is likely defective and will need to be replaced. In some cases, the main power control board may be the source of the fault if it is misreading or not receiving sensor signals despite intact wiring.

Source: manufacturer service documentation.

Common causes of E3

  1. 01

    Loose or disconnected cable connector

    Wiring / connection

    The ribbon cable or harness connecting the left front zone control to the main power board may have come loose or partially unseated. Reseating the connector firmly at both ends can resolve the error if no physical damage is present.

  2. 02

    Corroded or damaged connector pins

    Wiring / connection

    Moisture or heat exposure can corrode the connector terminals along the signal path between the zone control and the main power board. Visually inspect pins for discoloration, oxidation, or bending, and clean or repair as needed.

  3. 03

    Defective left front zone control assembly

    Part replacement

    The key sensor pad itself may have failed due to internal damage, prolonged heat exposure, or wear. If cabling and connections test correctly but E3 persists, the zone control assembly will need to be replaced.

  4. 04

    Damaged ribbon cable

    Part replacement

    The cable running between the left side cook zone control and the main power control board may have a break, kink, or short in it. Inspect the cable along its full length for visible damage and test for continuity.

  5. 05

    Faulty main power control board

    Part replacement

    If all wiring, connectors, and the zone control assembly check out correctly, the main power control board may be failing to read or process the key sensor signal properly. This is the least common cause but should be considered after other components are ruled out.

See the test procedure for each cause

Frequently asked questions about E3

What does E3 mean on a Frigidaire cooktop?
E3 on a Frigidaire cooktop means the left front zone control has a defective key sensor. The cooktop's main power control board detected an abnormal or missing signal from the touch sensor responsible for operating the left front burner zone. This fault is logged to alert the user and technician that the control or its wiring needs inspection.
Can I fix the E3 error on my Frigidaire cooktop myself?
Some causes of E3, such as a loose cable connector, can be addressed by a confident DIYer who is comfortable working with appliance electronics. However, accessing the internal connectors and control boards requires disassembling the cooktop, which involves working near electrical components. If you are not experienced with appliance repair, having a qualified technician perform the diagnosis and repair is recommended.
Is it safe to use my Frigidaire cooktop while E3 is displayed?
It is best to avoid using the left front burner zone while the E3 error is active, as the key sensor fault means that zone may not respond correctly to your inputs. Other zones may still function normally, but continued use of a zone with a known control fault could lead to unpredictable behavior. Have the issue diagnosed and repaired before relying on the affected burner.
How much does it cost to repair an E3 error on a Frigidaire cooktop?
Repair costs vary depending on what component is at fault. A simple connector reseating may cost only a service call fee, typically in the range of $75 to $150. If the left front zone control assembly needs replacement, parts and labor combined can range from $150 to $350 or more depending on the specific model and local labor rates. A faulty main power control board would be at the higher end of repair costs.
Will resetting my Frigidaire cooktop clear the E3 error?
Resetting the cooktop by disconnecting power for a few minutes may temporarily clear the E3 error display, but if the underlying cause is a hardware fault in the key sensor or wiring, the error will return when the unit is powered back on. A reset is useful as a first step to confirm whether the fault is intermittent or persistent, but it does not fix a defective sensor or damaged cable.

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