mypros+
Error code reference

Electrolux Microwave Error Code E-12

Short error of gas sensor.

Electrolux codesElectrolux microwave codes

Short error of gas sensor.

First step from the service manual

Check gas sensor for short circuit; perform sensor quick test.

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

MyPros+ Max

Get the full diagnostic procedure for E-12.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What E-12 means on a Electrolux microwave

The E-12 error code on an Electrolux microwave indicates a short circuit condition has been detected in the gas sensor circuit. The gas sensor is a component used in certain Electrolux microwave models to detect the presence of gases, vapors, or combustion byproducts during cooking. When the control board reads an abnormally low resistance or a direct short in the sensor's signal circuit, it triggers this fault code and typically halts normal operation to prevent inaccurate readings or unsafe conditions.

A short circuit in the gas sensor can originate from several points in the circuit: the sensor element itself, the wiring harness connecting the sensor to the control board, or the connector terminals where corrosion or physical damage creates an unintended low-resistance path. Unlike an open circuit fault, a short causes excess current to flow, which can result in incorrect sensor readings or component damage if left unaddressed. The control board monitors sensor resistance within a defined operating range, and any reading that falls below the minimum threshold is flagged as a short error.

Diagnosing this code begins with a sensor quick test, which involves disconnecting the sensor from the circuit and measuring resistance across its terminals with a multimeter. A shorted sensor will typically read near zero ohms rather than the expected resistance value for the sensor type. The wiring harness should also be inspected for pinched, melted, or chafed insulation that could cause conductor-to-conductor or conductor-to-chassis shorts.

Source: manufacturer service documentation.

Common causes of E-12

  1. 01

    Failed gas sensor element

    Part replacement

    The sensor element itself can develop an internal short due to age, heat exposure, or manufacturing defects. This is the most common source of the E-12 code and is confirmed by measuring near-zero resistance across the sensor terminals after disconnecting it from the harness.

  2. 02

    Damaged wiring harness

    Part replacement

    Wiring between the gas sensor and the control board can become pinched, melted from heat exposure, or chafed against sharp chassis edges, creating a short circuit. Visually inspect the entire harness run for damaged insulation or bare conductors touching each other or the chassis.

  3. 03

    Corroded or contaminated connector terminals

    Wiring / connection

    Moisture, grease, or food vapor can cause corrosion or conductive buildup inside the sensor connector, creating an unintended low-resistance path between terminals. Inspect the connector for discoloration, moisture, or debris and clean or replace as needed.

  4. 04

    Control board fault

    Part replacement

    In some cases, the control board's sensor input circuit can fail internally, causing it to incorrectly read a short even when the sensor and wiring are intact. This is confirmed only after the sensor and harness have been tested and cleared of faults.

See the test procedure for each cause

Frequently asked questions about E-12

What does E-12 mean on a Electrolux microwave?
The E-12 code indicates a short circuit has been detected in the gas sensor circuit. The control board monitors the electrical resistance of the gas sensor, and when it reads a value that is too low or falls to near zero, it flags this error. The microwave will typically stop normal operation until the fault is resolved. A technician will need to test the sensor and its connected wiring to isolate the cause.
Can I fix the E-12 error on my Electrolux microwave myself?
If you are comfortable using a multimeter and working with appliance wiring, you can perform basic diagnostic steps such as inspecting the sensor connector for corrosion and measuring sensor resistance after disconnecting it from the harness. However, if the sensor element itself has failed or the control board needs replacement, those repairs involve sourcing specific components and handling microwave internal components that carry hazardous voltages. Many homeowners prefer to have a qualified technician complete the repair.
Is it safe to use my Electrolux microwave while the E-12 error is displayed?
It is not recommended to continue using the microwave while E-12 is active. A shorted gas sensor means the appliance cannot accurately monitor cooking conditions, and the fault may also indicate damaged wiring inside the unit. Operating the microwave in this state could mask unsafe conditions or cause further electrical damage. The issue should be diagnosed and repaired before resuming normal use.
Will resetting my Electrolux microwave clear the E-12 error?
A power reset by unplugging the microwave for a few minutes may temporarily clear the error code from the display, but if the underlying short circuit in the gas sensor circuit has not been repaired, the E-12 code will return as soon as the control board reinitializes and re-checks the sensor. A reset alone is not a fix and should only be used as part of the diagnostic process.
How much does it cost to repair the E-12 error on an Electrolux microwave?
Repair costs vary depending on what component has failed. Gas sensor replacement parts generally range from around $20 to $60, while a control board can range from $80 to $200 or more depending on the model. Adding labor for a professional technician typically brings the total repair cost to somewhere between $100 and $300. If the microwave is older, it may be worth comparing repair costs against the price of a replacement unit.

Related Electrolux microwave codes

All Electrolux microwave codes
View all 18 Electrolux microwave codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass