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Error code reference

Frigidaire Cooktop Error Code E8

Left Rear zone control key sensor defective.

Frigidaire codesFrigidaire cooktop codes

Left Rear zone control key sensor defective.

First step from the service manual

Replace left side cook zones touch control.

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

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What E8 means on a Frigidaire cooktop

The E8 error code on a Frigidaire cooktop indicates that the left rear zone control key sensor has been detected as defective. This sensor is part of the capacitive touch control assembly located on the left side of the cooktop's user interface. The touch control board uses capacitive sensing technology to detect finger contact at each cooking zone's designated key area. When the control board cannot read a valid signal from the left rear zone sensor, or detects a continuously shorted or open sensor input, it registers the E8 fault and disables operation to prevent unintended zone activation.

The left side cook zones touch control is an integrated assembly that handles input detection for multiple burner zones on that side of the cooktop. A defective key sensor within this assembly typically results from physical damage to the glass surface above the sensor, contamination beneath or around the touch key area, a failed capacitive sensing element on the board itself, or internal circuit damage within the control module. Because the sensor is embedded within the board rather than being a standalone replaceable component, the entire left side touch control assembly must be replaced when this fault is confirmed.

Diagnosing E8 begins with inspecting the cooktop surface above the left rear zone key for cracks, deep scratches, or moisture intrusion that could interfere with capacitive sensing. Cleaning the surface thoroughly and power cycling the unit can help rule out temporary contamination-related faults. If the error persists after these steps, the left side cook zones touch control board requires replacement, as individual sensor elements within the assembly are not field-serviceable.

Source: manufacturer service documentation.

Common causes of E8

  1. 01

    Failed touch control board

    Part replacement

    The capacitive sensing element for the left rear zone within the touch control assembly has failed internally. This is the most common cause and requires replacing the entire left side cook zones touch control board.

  2. 02

    Surface contamination over the touch key

    Wiring / connection

    Grease, moisture, or food debris on the glass above the left rear zone key can disrupt capacitive sensing and trigger a false E8 fault. Thoroughly cleaning the cooktop surface and power cycling the unit may resolve the error if contamination is the cause.

  3. 03

    Cracked or damaged glass surface

    Part replacement

    A crack or deep scratch in the ceramic glass directly above the left rear touch key can permanently interfere with sensor readings. Inspect the surface closely under bright light for any visible damage.

  4. 04

    Moisture intrusion into the control assembly

    Wiring / connection

    Liquid that has seeped beneath the cooktop surface and reached the touch control board can cause sensor inputs to short or read incorrectly. If moisture is suspected, allowing the unit to dry completely before retesting may be warranted before replacing parts.

  5. 05

    Loose or damaged wiring connection to touch control

    Wiring / connection

    A loose ribbon cable or connector between the touch control board and the main control board can cause intermittent or permanent sensor faults. Inspect all connectors to the left side touch control assembly for secure seating and any signs of burning or corrosion.

See the test procedure for each cause

Frequently asked questions about E8

What does E8 mean on a Frigidaire cooktop?
E8 indicates that the left rear zone control key sensor has been detected as defective by the cooktop's control system. The capacitive touch sensor responsible for detecting input at the left rear burner zone is either reading an invalid signal or has failed entirely. The cooktop displays this code and restricts operation to prevent unintended burner activation. Resolving the error typically requires replacing the left side cook zones touch control assembly.
Can I fix the E8 error on my Frigidaire cooktop myself?
Basic troubleshooting steps such as cleaning the glass surface above the left rear zone key and performing a power reset can be done without technical expertise. However, if those steps do not clear the error, replacing the left side touch control board is required. This repair involves disassembling the cooktop and disconnecting electrical components, so it is best suited for technicians or experienced DIYers comfortable working with appliance electronics.
Will resetting my Frigidaire cooktop clear the E8 error?
A power reset by turning off the circuit breaker for 30 to 60 seconds may temporarily clear the E8 code if the fault was caused by a momentary issue such as surface contamination or a minor voltage fluctuation. However, if the touch control sensor has physically failed, the error will return after the reset. Persistent E8 faults after a reset confirm that the touch control assembly needs to be replaced.
Is it safe to use my Frigidaire cooktop while the E8 error is displayed?
The cooktop's control system flags E8 specifically to prevent unreliable operation of the left rear zone. Continuing to use the cooktop while this fault is active is not recommended, as the sensor defect could cause unpredictable behavior in that zone. It is best to avoid using the appliance until the fault is diagnosed and the defective touch control component is replaced.
How much does it cost to repair a Frigidaire cooktop showing E8?
The cost depends on whether you perform the repair yourself or hire a technician. The left side cook zones touch control board part cost typically ranges from around 80 to 200 dollars depending on the specific cooktop model. If you hire a professional appliance repair technician, labor charges will add to that cost, bringing the total repair estimate to a range of roughly 150 to 350 dollars or more depending on your location and service rates.

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