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Error code reference

Kenmore Range Error Code E66

Cooktop control has detected a fault condition related to one of the cooking zone pairs.

Kenmore codesKenmore range codes

Cooktop control has detected a fault condition related to one of the cooking zone pairs.

First step from the service manual

Press STOP to attempt to clear the display. Re-power the appliance if necessary. If error recurs, record error number and call 1-800-4-MY-HOME.

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

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What E66 means on a Kenmore range

The E66 error code on a Kenmore range indicates that the cooktop control board has detected a fault condition within one of the cooking zone pairs. Induction and radiant electric cooktops organize their heating elements into paired zones that share control circuitry, and the control board continuously monitors these zones for signal integrity, relay function, and power delivery consistency. When the board detects an out-of-range condition in one of these zone pairs, it triggers E66 and halts cooktop operation to prevent potential damage or unsafe operation.

The most common sources of this fault are failures in the relay or triac components responsible for switching power to the cooking zone pair, wiring harness issues between the cooktop control board and the individual heating elements, and faults within the control board itself. A failed relay can cause the board to detect an incorrect switching state, while a damaged wiring harness can produce erratic resistance or continuity readings that trigger the fault. In some cases, a heating element that has shorted or developed an open circuit will also cause the paired zone monitoring circuit to register a fault condition.

Because this error involves the cooktop control system and potentially live high-voltage components, the diagnostic process should begin with a soft reset: press the STOP key to attempt to clear the display, then cycle power at the breaker if the error persists. If the E66 code returns after re-powering, further diagnosis will require accessing the cooktop control board and inspecting the zone pair wiring, relay contacts, and element continuity. At that point, contacting a qualified technician is strongly recommended.

Source: manufacturer service documentation.

Common causes of E66

  1. 01

    Faulty cooktop control board relay or triac

    Part replacement

    The relay or triac that switches power to a cooking zone pair can fail in an open or shorted state, causing the control board to detect an incorrect operating condition and trigger E66. This is one of the most frequent hardware failures behind this code.

  2. 02

    Damaged or loose wiring harness connection

    Wiring / connection

    A loose connector or damaged wire between the cooktop control board and a heating element zone can produce inconsistent signals that the board interprets as a fault. Inspect harness connections for burn marks, corrosion, or pulled terminals.

  3. 03

    Failed or shorted heating element

    Part replacement

    A heating element that has developed a short circuit or open circuit within one of the zone pairs will disrupt the expected electrical load, causing the control board to log a fault. Continuity testing of the affected element can confirm this cause.

  4. 04

    Cooktop control board failure

    Part replacement

    Internal component failure on the cooktop control board itself, beyond a single relay, can cause the zone pair monitoring circuit to report a fault condition. If wiring and elements test correctly, the board is likely the source.

  5. 05

    Transient power surge or voltage fluctuation

    Wiring / connection

    A brief power surge or supply voltage irregularity can cause the control board to register a false fault condition. In these cases, a full power cycle at the breaker will often clear the code without any component replacement needed.

See the test procedure for each cause

Frequently asked questions about E66

What does E66 mean on a Kenmore range?
E66 on a Kenmore range means the cooktop control board has detected a fault condition associated with one of the cooking zone pairs. The control system monitors paired burner zones for proper electrical behavior, and when something falls outside expected parameters, it triggers this code and disables the cooktop. The fault can originate from a failed relay, a bad heating element, a wiring issue, or the control board itself.
Will resetting the range clear the E66 error code?
Pressing the STOP key may clear the display, and cycling power at the circuit breaker can sometimes fully reset the control board. If the E66 code was caused by a transient voltage event, the reset may be all that is needed. However, if an underlying component has failed, the code will return after the reset and further repair will be necessary.
Is it safe to use my Kenmore range while E66 is displayed?
You should not attempt to operate the cooktop while E66 is active. The code indicates the control system has identified a fault in a cooking zone pair and has interrupted operation for that reason. Continuing to use the cooktop before the fault is diagnosed and resolved could risk further component damage or an unsafe operating condition.
How much does it cost to fix a Kenmore range showing E66?
Repair costs vary depending on which component has failed. A wiring harness inspection and repair by a technician might run in the range of $100 to $200 for labor alone. Replacing a cooktop control board typically costs between $150 and $400 depending on the specific board required and labor rates in your area. A single failed heating element is generally less expensive to replace than the control board.
Can I diagnose and repair the E66 error code myself?
A basic soft reset by pressing STOP and cycling the breaker is a reasonable first step for any homeowner. Beyond that, diagnosing E66 involves accessing the cooktop control board and zone wiring, which exposes high-voltage components and should only be attempted by someone comfortable working with appliance electrical systems. If the code recurs after a reset, calling a qualified technician or reaching Kenmore support at 1-800-4-MY-HOME is the recommended path forward.

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