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Error code reference

Kenmore Range Error Code 73

Power supply defect in the Induction Housing Assembly, right side cooking zones.

Kenmore codesKenmore range codes

Power supply defect in the Induction Housing Assembly, right side cooking zones.

First step from the service manual

Test all cables and connections on Large Filter Circuit Board.

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 73 means on a Kenmore range

Error code 73 on a Kenmore induction range indicates a detected power supply defect within the Induction Housing Assembly on the right side of the cooktop. The induction housing assembly contains the inverter boards, power electronics, and the filtering components that regulate and distribute power to the right-side cooking zones. When the control system detects an anomaly in the power supply path serving these zones, it triggers code 73 and disables the affected burners to prevent damage to the electronics or a potential safety hazard.

The Large Filter Circuit Board is a critical component in this power pathway. It conditions incoming AC power, suppresses electromagnetic interference, and provides stable filtered power to the induction inverter stages. A fault here can manifest as voltage irregularities, open circuits, or failed filtering components such as capacitors or inductors on the board itself. The first diagnostic step is a thorough inspection and continuity test of all cables and connections routed to and from this board, as loose connectors, corroded terminals, or damaged wiring harnesses are frequent culprits before the board itself is condemned.

If all cables and connections test sound, the fault likely resides within the Large Filter Circuit Board or in components downstream of it within the right-side induction housing. Technicians should check for signs of heat damage, burnt traces, or bulging capacitors on the board. Upstream power supply issues, such as voltage drops at the terminal block or a weak household circuit, can also trigger this code by starving the assembly of proper input voltage.

Source: manufacturer service documentation.

Common causes of 73

  1. 01

    Loose or damaged wiring connections on the Large Filter Circuit Board

    Wiring / connection

    Connectors can work loose over time due to vibration and thermal cycling, causing intermittent or complete power supply faults. Inspect all harness connectors to and from the Large Filter Circuit Board for secure seating, corrosion, and damaged pins.

  2. 02

    Failed Large Filter Circuit Board

    Part replacement

    The filter board itself may have failed components such as capacitors, inductors, or fuse elements, disrupting power delivery to the right-side induction zones. Look for visible signs of heat damage, burnt areas, or swollen capacitors on the board surface.

  3. 03

    Damaged wiring harness within the Induction Housing Assembly

    Part replacement

    Wires routed through the right-side induction housing can become pinched, chafed, or heat-damaged over time, creating opens or shorts in the power supply path. A careful visual inspection and continuity test of each wire in the harness will identify breaks.

  4. 04

    Faulty induction inverter board on the right side

    Part replacement

    If the inverter board that drives the right-side cooking zones has developed an internal short or open, it can pull abnormal current and cause the system to report a power supply defect. This is typically diagnosed after the filter board and wiring have been ruled out.

  5. 05

    Inadequate or unstable household power supply

    Wiring / connection

    Induction ranges require a stable 240V supply at the rated amperage. A weak connection at the wall outlet, a deteriorated range cord, or a problem at the circuit breaker can result in voltage conditions that trigger this code. Verify line voltage at the terminal block under load.

See the test procedure for each cause

Frequently asked questions about 73

What does 73 mean on a Kenmore range?
Error code 73 indicates a power supply defect detected in the Induction Housing Assembly on the right side of the cooktop. The control board has identified an abnormal power condition affecting the right-side cooking zones and has disabled them as a protective measure. Diagnosis begins with inspecting all cables and connections on the Large Filter Circuit Board.
Can I fix error code 73 on my Kenmore induction range myself?
Some causes of code 73, such as a loose wiring connector, can be addressed by a careful DIYer comfortable working with appliance electronics after the range is fully disconnected from power. However, testing voltage levels, diagnosing circuit boards, and replacing internal components inside an induction housing assembly involves high-voltage capacitors that can retain a dangerous charge even after power is disconnected. For most homeowners, this repair is best left to a qualified appliance technician.
Is it safe to use my Kenmore range when error code 73 is displayed?
The right-side induction cooking zones should be considered inoperative and should not be used while code 73 is active, as the control system has detected a power supply fault in that section. The left-side zones may still function, but continued use of the appliance before the fault is diagnosed and repaired is not recommended. Unresolved power supply defects in induction electronics can worsen over time and pose a risk of further component damage.
Will resetting my Kenmore range clear error code 73?
Disconnecting the range from power for several minutes and restoring power may temporarily clear the error display, but the code will return if the underlying power supply fault still exists. A reset does not repair loose connections, failed components, or wiring damage. Resetting is useful as a first step to confirm whether the fault is intermittent, but a proper diagnostic inspection is still required.
How much does it cost to repair error code 73 on a Kenmore induction range?
Repair costs vary depending on the root cause. If the fix is simply reseating a loose connector, a service call fee of roughly $75 to $150 may be the primary expense. Replacing the Large Filter Circuit Board or an induction inverter board can bring the total parts and labor cost to a range of $200 to $500 or more, depending on parts availability and local labor rates. Getting a diagnostic assessment before committing to repairs is advisable.

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