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Error code reference

Dacor Range Oven Cooktop Error Code L32

Temp sensor (lower oven)

Dacor codesDacor range oven cooktop codes

Temp sensor (lower oven) - open RTD 2, check wiring at connection points.

First step from the service manual

Check wiring at connection points.

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

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What L32 means on a Dacor range oven cooktop

The L32 error code on a Dacor range or oven indicates an open circuit condition in RTD 2, which is the resistance temperature detector assigned to the lower oven cavity. RTDs are precision temperature-sensing resistors whose electrical resistance changes predictably with temperature. An "open" RTD means the circuit has a break somewhere, producing infinite or unmeasurably high resistance. The oven control board interprets this as a sensor failure and triggers the L32 fault to prevent the oven from operating without reliable temperature feedback.

The most important first diagnostic step is a thorough inspection of the wiring at all connection points between the lower oven RTD and the control board. Connectors can corrode, back out of their housings, or suffer heat-related insulation damage that causes an intermittent or permanent open. The wiring harness in the lower oven section is exposed to repeated thermal cycling, which can fatigue wire insulation and cause internal breaks that are not visible from the outside.

If the wiring and connectors check out without fault, the RTD sensor itself may have failed internally. A functioning RTD sensor will show a measurable resistance value that changes with temperature. An open RTD will show no continuity at all. Technicians should use a multimeter to test resistance across the sensor terminals directly at the sensor body, bypassing the harness, to isolate whether the fault lies in the sensor or the wiring.

Source: manufacturer service documentation.

Common causes of L32

  1. 01

    Loose or corroded wiring connector

    Wiring / connection

    The connector linking the lower oven RTD to the control board wiring harness may have backed out, corroded, or lost contact. Inspect all connection points along the RTD circuit and reseat or clean any suspect connectors.

  2. 02

    Damaged wiring harness

    Part replacement

    Repeated heating and cooling cycles can crack or break wire insulation and cause internal wire breaks. Visually inspect the harness routing in the lower oven area and use a multimeter to check continuity along each wire.

  3. 03

    Failed RTD 2 sensor

    Part replacement

    The RTD sensor element itself can fail open internally, showing no continuity when tested directly at the sensor terminals with a multimeter. A failed sensor requires replacement.

  4. 04

    Heat damage to wiring insulation

    Part replacement

    Wires routed near high-heat areas can have their insulation melt or char, leading to short or open conditions. Look for discolored, brittle, or burnt insulation along the lower oven wiring path.

  5. 05

    Faulty control board connection

    Wiring / connection

    The terminal where the RTD circuit connects to the control board may be loose or damaged. Inspect the board-side connector for bent pins or signs of heat damage before concluding the board itself has failed.

See the test procedure for each cause

Frequently asked questions about L32

What does L32 mean on a Dacor range, oven, cooktop?
L32 indicates that the lower oven temperature sensor, specifically RTD 2, has an open circuit condition. This means the control board is receiving no usable resistance signal from the sensor. The fault is typically caused by a wiring break, a loose connector, or a failed sensor element. The oven will not function normally until the open circuit is located and repaired.
Can I fix the L32 error myself?
A knowledgeable DIYer can start by inspecting the wiring connections at the lower oven RTD and along the harness routing for obvious breaks or loose connectors. If reseating connectors does not resolve the fault, testing the sensor with a multimeter requires some comfort with electrical diagnostics. Replacing the RTD sensor or wiring harness is a moderate repair, but working around oven wiring should always be done with the appliance unplugged from power.
Is it safe to use my Dacor oven while the L32 code is showing?
It is not recommended to use the lower oven while the L32 code is active. Without a functioning temperature sensor, the control board cannot regulate oven temperature accurately, which creates a risk of overheating. The oven may refuse to operate at all as a safety precaution, depending on how the control board responds to the fault.
Will resetting the oven clear the L32 error code?
Cycling power to the oven may temporarily clear the displayed code, but the L32 fault will return if the underlying open circuit condition has not been corrected. A reset is useful for confirming whether the fault is intermittent, but it is not a fix. The wiring and sensor must be inspected and repaired to permanently resolve the error.
How much does it cost to repair a Dacor L32 error?
Repair costs depend on what component has failed. If the fix is simply reseating a loose connector, there may be no parts cost and only a service call fee, which typically ranges from $75 to $150. Replacing the RTD sensor itself usually adds $50 to $150 in parts. If the wiring harness needs replacement, total costs including labor can range from $200 to $400 or more depending on your location and service provider.

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