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Error code reference

Dacor Oven Error Code L80

Lower meat probe shorted

Dacor codesDacor oven codes

Lower meat probe shorted - A/D value above 0XF0 registered for 60 continuous seconds.

First step from the service manual

Verify oven meat probe connection end is clean. Use new meat probe to test.

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

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What L80 means on a Dacor oven

The L80 error code on a Dacor oven indicates that the lower meat probe circuit has registered a shorted condition. Specifically, the oven's analog-to-digital converter is reading a value above 0xF0 (decimal 240) continuously for 60 seconds or longer. The meat probe system works by measuring resistance changes in the probe tip as food temperature rises. When a short occurs, the resistance in the circuit drops abnormally low, pushing the A/D value to the upper boundary of the readable range and causing the control board to flag the fault.

The most common entry point for this fault is the probe connection port on the oven cavity wall. Food debris, grease buildup, or moisture at the connection point can create a low-resistance path that mimics a shorted probe. This is why the first diagnostic step focuses on inspecting and cleaning the probe connector before replacing any components. A dirty or corroded connector can introduce enough conductivity to trigger the sustained 60-second threshold the control uses to confirm the fault.

If cleaning the connection does not resolve the code, the probe itself is the next suspect. Meat probes can fail internally due to heat cycling, physical damage to the cable, or contamination inside the tip. Substituting a known-good or new probe is the definitive test for isolating whether the fault is in the probe or in the oven's wiring and control circuit. If a new probe also triggers L80, the issue likely lies in the probe input wiring harness or the control board's A/D input circuit.

Source: manufacturer service documentation.

Common causes of L80

  1. 01

    Dirty or contaminated probe connection port

    Wiring / connection

    Grease, food residue, or moisture inside the probe jack on the oven wall can create a low-resistance short that drives the A/D reading above 0xF0. Inspect and clean the port carefully before any other steps.

  2. 02

    Faulty or damaged meat probe

    Part replacement

    Internal probe failure from heat exposure, a cracked tip, or a damaged cable can cause the probe to short internally. Substituting a new probe is the fastest way to confirm this is the source of the fault.

  3. 03

    Corroded or damaged probe connector pins

    Wiring / connection

    Corrosion on the metal pins of the probe plug or the oven's receptacle can alter the circuit resistance enough to register as a short. Visually inspect the pins for discoloration, pitting, or bent contacts.

  4. 04

    Damaged probe wiring harness inside the oven

    Part replacement

    If the wiring between the probe jack and the control board has been pinched, burned, or chafed against the cavity, it can create a short in the circuit independent of the probe itself. This would be indicated if the error persists with a known-good probe connected.

  5. 05

    Control board A/D input circuit failure

    Part replacement

    If cleaning the port and substituting a new probe both fail to resolve L80, the fault may originate in the control board's analog-to-digital input circuit that reads the probe signal. This is the least common cause and is typically confirmed only after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about L80

What does L80 mean on a Dacor oven?
L80 means the lower meat probe circuit has been detected as shorted. The oven's control system measures the probe using an analog-to-digital converter, and when that reading stays above the value 0xF0 for 60 continuous seconds, the L80 code is triggered. This can be caused by a dirty connection port, a failed probe, or a wiring issue in the probe circuit.
How do I fix the L80 error on my Dacor oven?
Start by removing the meat probe and inspecting the probe connection port on the oven cavity wall for grease or debris. Clean the port thoroughly and test with a new meat probe to determine if the original probe has failed. If the error continues with a new probe, the wiring harness or control board input circuit should be inspected by a qualified technician.
Will resetting my Dacor oven clear the L80 code?
A power reset may temporarily clear the L80 code, but it will return if the underlying short condition in the probe circuit is not corrected. Because the code requires 60 continuous seconds of an abnormal A/D reading to trigger, the fault will reappear as soon as that threshold is met again. Resolving the root cause, whether it is a dirty connection, a bad probe, or a wiring fault, is necessary to clear the code permanently.
Is it safe to use my Dacor oven while the L80 code is displayed?
The L80 code specifically relates to the meat probe circuit, not the main heating system. Basic oven baking and broiling functions may still operate, but you should not use the meat probe feature while this fault is active. It is best to resolve the code before relying on any probe-based cooking function, as the probe temperature readings would not be accurate or reliable.
How much does it cost to repair a Dacor oven showing L80?
If the fix is simply cleaning the probe connection port, there is no parts cost involved. Replacing a failed meat probe typically costs in the range of $30 to $80 for the part depending on the model. If the control board requires replacement, costs can range from $150 to $400 or more for the part alone, with additional labor costs if a technician performs the repair.

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