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Error code reference

Kenmore Range Error Code 33

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

Kenmore codesKenmore range codes

Power supply defect in the Induction Housing Assembly, left 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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What 33 means on a Kenmore range

Error code 33 on a Kenmore induction range signals a power supply defect within the Induction Housing Assembly on the left side cooking zones. This code indicates that the control system has detected an abnormal power supply condition affecting the left-side induction components, which can include insufficient or unstable voltage delivery, a fault in the filtering circuitry, or a breakdown in the electrical path between the power input stage and the left-side induction coil drivers. The Large Filter Circuit Board is a central component here, as it conditions incoming AC power before it reaches the induction modules.

The Large Filter Circuit Board manages electromagnetic interference filtering and helps regulate the power quality delivered to the induction zones. A defect at this board, or in the cables and connectors linking it to the left-side housing assembly, can cause the control board to flag an error 33. Common failure points include loose or corroded connector pins, damaged wiring harnesses routed to the left cooking zones, and component-level failures on the filter board itself such as failed capacitors or inductors.

Because this fault is specifically isolated to the left side of the induction housing, technicians should begin by inspecting all cables and connections at the Large Filter Circuit Board before condemning any major components. Verify that all connectors are fully seated, check for signs of heat damage or arcing on the wiring, and look for visible burn marks or swelling on the filter board. If wiring and connections check out, the filter board or the left-side induction module assembly may need further testing or replacement.

Source: manufacturer service documentation.

Common causes of 33

  1. 01

    Loose or Disconnected Cables at the Large Filter Circuit Board

    Wiring / connection

    Vibration and heat cycling can cause connectors to work loose over time. Inspect all cables attached to the Large Filter Circuit Board for secure seating and any signs of corrosion or fretting.

  2. 02

    Damaged Wiring Harness to Left-Side Induction Zones

    Part replacement

    The wiring harness routed to the left cooking zones can develop chafing, pinches, or heat-related insulation damage. Visually trace the harness for breaks, melted insulation, or burn marks.

  3. 03

    Failed Large Filter Circuit Board

    Part replacement

    Component-level failures on the filter board, such as blown capacitors, failed inductors, or burned traces, can disrupt power delivery to the left induction housing. Look for visible swelling, burn marks, or discoloration on the board.

  4. 04

    Corroded or Arced Connector Pins

    Part replacement

    High current flow through induction system connectors can cause arcing or oxidation at the pin contacts, increasing resistance and triggering a power supply fault. Inspect connector pins for pitting, blackening, or oxidation.

  5. 05

    Left-Side Induction Housing Assembly Failure

    Part replacement

    If all wiring, connections, and the filter board test correctly, the induction module assembly itself on the left side may have an internal power stage failure requiring replacement of the assembly.

See the test procedure for each cause

Frequently asked questions about 33

What does 33 mean on a Kenmore range?
Error code 33 on a Kenmore range indicates a power supply defect in the Induction Housing Assembly affecting the left side cooking zones. The control system has detected an abnormal condition in the power delivery path to those burners. The first step in diagnosing this is testing all cables and connections at the Large Filter Circuit Board. Left-side induction zones may be non-functional until the fault is resolved.
Can I fix error code 33 on my Kenmore range myself?
A knowledgeable DIYer can start by unplugging the range and carefully inspecting all cable connections at the Large Filter Circuit Board for looseness or corrosion, which are common and straightforward fixes. However, if the fault involves a failed filter board or induction module assembly, those repairs require comfort working with high-voltage components and sourcing the correct replacement parts. If you are not experienced with induction appliance internals, a qualified technician is the safer option.
Is it safe to use my Kenmore range when error code 33 is showing?
A power supply defect in the induction housing assembly can indicate a damaged component or compromised wiring, which carries a risk of further electrical damage or, in severe cases, a fire hazard. It is best to avoid using the left-side cooking zones until the fault has been diagnosed and repaired. Right-side zones may still function, but using the appliance with an active fault code is not recommended until the root cause is identified.
Will resetting my Kenmore range clear error code 33?
Power-cycling the range by unplugging it for a few minutes and restoring power may temporarily clear the error code, but if the underlying power supply defect remains, the code will return when the induction system is activated. A reset is useful for confirming whether the fault is intermittent, but it does not repair failed components, damaged wiring, or a faulty filter board. Persistent return of the code means physical inspection and repair are required.
How much does it cost to repair error code 33 on a Kenmore range?
Repair costs depend on the root cause. If the fix is simply reseating a loose connector, there may be minimal cost beyond a service call fee, which typically ranges from $75 to $150. If the Large Filter Circuit Board needs replacement, parts alone can range from $80 to $250 or more depending on availability, plus labor. A full left-side induction housing assembly replacement would be at the higher end of the cost range, potentially $200 to $500 or more for parts and labor combined.

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