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Error code reference

Dacor Range Oven Cooktop Error Code E2

DTF364SIWS Refrigerator

Dacor codesDacor range oven cooktop codes

DTF364SIWS Refrigerator: Refrigerator evaporator sensor error.

First step from the service manual

Open, shorted or disconnected.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What E2 means on a Dacor range oven cooktop

The E2 error code on the Dacor DTF364SIWS indicates a fault in the refrigerator evaporator sensor circuit. The evaporator sensor, also known as the evaporator thermistor, is a temperature-sensing component located near the evaporator coil in the freezer or refrigerator compartment. Its job is to report the evaporator coil temperature to the main control board so the system can regulate defrost cycles and compressor operation accurately. When the control board detects a reading outside the expected resistance range, either too high, too low, or completely absent, it triggers the E2 fault.

The first diagnostic step is to check whether the sensor circuit is open, shorted, or physically disconnected. An open circuit means the sensor or its wiring has failed in a way that breaks electrical continuity. A short circuit means two conductors in the harness are making unintended contact, pulling the resistance reading out of range. A disconnected sensor means the connector has come loose from either the sensor itself or from the control board. All three conditions produce a signal the board interprets as a sensor error.

Diagnosing this fault requires a multimeter. Technicians should check the sensor's resistance at a known temperature to determine if it falls within the expected range for an NTC thermistor, then inspect the wiring harness for chafing, pinching, or corrosion at the connector pins. If the sensor reads correctly but the fault persists, the harness or the control board itself may be at fault.

Source: manufacturer service documentation.

Common causes of E2

  1. 01

    Disconnected sensor connector

    Wiring / connection

    The wiring connector between the evaporator sensor and the control board harness can work loose over time due to vibration or during a service visit. Inspect both ends of the sensor connector for a secure, fully seated connection.

  2. 02

    Failed evaporator thermistor

    Part replacement

    The thermistor itself can fail open or short internally, producing a resistance reading that falls outside the acceptable range. Test the sensor with a multimeter and compare the reading to expected NTC thermistor values at the current coil temperature.

  3. 03

    Damaged wiring harness

    Part replacement

    The wiring between the sensor and the control board may be chafed, pinched, or broken, particularly where it routes through cabinet panels or around sharp edges. Inspect the full length of the harness for visible damage or breaks in continuity.

  4. 04

    Corroded or damaged connector pins

    Part replacement

    Moisture inside the refrigerator compartment can cause corrosion at the connector pins, increasing resistance or breaking the circuit entirely. Check the connector pins visually and clean or replace the connector if corrosion is present.

  5. 05

    Faulty main control board

    Part replacement

    If the sensor tests within spec and the wiring and connectors are intact, the control board's sensor input circuit may have failed. This is the least common cause and should only be suspected after the sensor and harness have been ruled out.

See the test procedure for each cause

Frequently asked questions about E2

What does E2 mean on a Dacor range, oven, cooktop?
On the Dacor DTF364SIWS, E2 indicates a refrigerator evaporator sensor error. The control board has detected that the evaporator thermistor circuit is open, shorted, or disconnected, meaning it cannot receive a valid temperature signal from the evaporator coil. This prevents the system from properly managing defrost cycles and compressor operation.
Can I fix an E2 error on my Dacor appliance myself?
Some causes of the E2 error are accessible to a skilled DIYer. Checking and reseating the sensor connector requires no special tools and is a reasonable first step. Testing the thermistor with a multimeter is also straightforward if you are comfortable using one. However, replacing the control board or tracing a harness fault inside the cabinet may require disassembly that is better handled by a qualified technician.
Is an E2 error on a Dacor appliance a safety concern?
The E2 error itself does not represent an immediate safety hazard in the way that a gas or electrical fault would. However, because the evaporator sensor monitors temperature for defrost and cooling control, a failed sensor can lead to improper cooling, food spoilage, or excessive frost buildup if left unaddressed. The issue should be diagnosed and corrected promptly.
How much does it cost to repair an E2 error on a Dacor appliance?
Repair costs depend on which component has failed. A replacement evaporator thermistor is generally an inexpensive part, with the sensor itself typically ranging from around $15 to $60 depending on sourcing. A wiring harness repair or connector replacement adds minimal parts cost but may require labor time. A control board replacement is the most expensive scenario, with parts often ranging from $100 to $300 or more plus labor.
Will resetting my Dacor appliance clear the E2 error code?
Resetting the appliance by disconnecting power for a few minutes may temporarily clear the E2 code, but the error will return if the underlying sensor circuit fault has not been corrected. A reset is useful for confirming whether the fault is intermittent, but it is not a fix. The sensor, wiring, and connectors should be inspected and tested to identify and resolve the root cause.

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