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Error code reference

Kenmore Range Error Code 51

Inductor temperature sensor break on the left front (LF) cooking zone.

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Inductor temperature sensor break on the left front (LF) cooking zone.

First step from the service manual

Verify Inductor temperature sensor is correctly connected to the Induction Housing Assembly connector.

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 51 means on a Kenmore range

Error code 51 on a Kenmore induction range indicates a break, or open circuit, detected in the temperature sensor circuit for the left front (LF) induction cooking zone. This sensor is a thermistor mounted within the induction housing assembly that continuously monitors the temperature of the inductor coil during operation. When the control board reads an open circuit from this sensor, it cannot confirm safe operating temperatures for the LF zone and shuts it down, triggering code 51.

The most immediate diagnostic focus should be the physical connection between the inductor temperature sensor and the induction housing assembly connector. Vibration, heat cycling, and general wear can cause connectors to loosen or separate over time. A disconnected or partially seated connector will produce the same open-circuit signal as a fully failed sensor, so confirming a secure connection is the correct first step before replacing any components.

If the connector is properly seated and the fault persists, the sensor itself may have failed internally with a broken or open thermistor element. In some cases, the wiring harness between the sensor and the control board may have developed a break or damaged insulation, interrupting the signal path. Less commonly, the induction control board itself may be unable to correctly read the sensor signal, though board-level faults are typically ruled out only after sensor and wiring integrity have been confirmed.

Source: manufacturer service documentation.

Common causes of 51

  1. 01

    Loose or disconnected sensor connector

    Wiring / connection

    The connector linking the inductor temperature sensor to the induction housing assembly may have come loose or partially unseated. Inspecting and firmly reseating this connector is the first step and often resolves the fault without any parts replacement.

  2. 02

    Failed inductor temperature sensor

    Part replacement

    The thermistor element inside the temperature sensor may have developed an internal open circuit, producing a break signal to the control board. A failed sensor will need to be replaced to restore LF zone operation.

  3. 03

    Damaged wiring harness

    Part replacement

    The wire harness running between the temperature sensor and the control board may have a broken conductor or damaged insulation, interrupting the sensor signal. Visually inspect the harness for pinching, burn marks, or breaks along its entire length.

  4. 04

    Corroded or contaminated connector terminals

    Wiring / connection

    Moisture or grease contamination inside the sensor connector can cause high resistance or an open circuit condition even when the connector appears physically attached. Inspect the terminals for corrosion or residue and clean carefully before retesting.

  5. 05

    Faulty induction control board

    Part replacement

    If the sensor, connector, and wiring all test within normal parameters, the induction control board may have lost the ability to accurately read the sensor circuit for the LF zone. Board replacement is typically a last-resort diagnosis after all other components are ruled out.

See the test procedure for each cause

Frequently asked questions about 51

What does 51 mean on a Kenmore range?
Error code 51 on a Kenmore induction range indicates a break or open circuit in the temperature sensor for the left front induction cooking zone. The control board cannot receive a valid signal from the sensor that monitors heat at that burner, so the zone is disabled as a safety precaution. The fault may be caused by a loose connector, a damaged wire, or a failed sensor.
Can I fix error code 51 on my Kenmore range myself?
The first step, checking that the inductor temperature sensor is firmly connected to the induction housing assembly connector, is something a careful DIYer can perform after unplugging the range. If a loose connector is the cause, reseating it may clear the fault without any parts or tools. However, if the sensor itself or the wiring harness has failed, those repairs involve disassembling the cooktop and working near induction components, which is better suited for a qualified technician.
Is it safe to keep using my Kenmore range with error code 51 showing?
The left front induction zone will be disabled while error code 51 is active, so you cannot cook on that burner. The other cooking zones on the range may still function normally. It is not recommended to attempt to bypass or ignore the fault, as the temperature sensor is a safety-critical component that prevents the inductor coil from operating without proper thermal monitoring.
How much does it cost to repair error code 51 on a Kenmore induction range?
If the fix is simply reseating a loose connector, the repair costs nothing beyond your time. Replacing an inductor temperature sensor typically runs in the range of $20 to $80 for the part alone, depending on availability. If a technician is needed for diagnosis and repair, expect total costs in the range of $100 to $300 depending on local labor rates and whether additional parts like a control board are required.
Will resetting my Kenmore range clear error code 51?
Performing a reset by unplugging the range or cutting power at the breaker for a few minutes may temporarily clear the displayed code. However, if the underlying cause, such as a disconnected sensor or a failed thermistor, has not been corrected, the fault will return as soon as the range attempts to use the left front induction zone again. A reset is useful for confirming whether the fault is intermittent, but it is not a repair.

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