mypros+
Error code reference

Electrolux Oven Error Code F2

Communication failure

Electrolux codesElectrolux oven codes

Communication failure — includes communication problem with the auxiliary board (F21) or communication problem with the TST board (F23).

First step from the service manual

Verify wiring between controller (P4 and P10), auxiliary board (P1) and glass panel (J1). If F21 appears, replace auxiliary board. If F23 appears, replace glass panel. If controller does not communicate with auxiliary board, change the controller.

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 F2.

  • 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 F2 means on a Electrolux oven

The F2 error code on an Electrolux oven indicates a communication failure between the main controller and one or more secondary boards in the control system. This error has two specific sub-codes: F21 points to a communication breakdown between the controller and the auxiliary board, while F23 identifies a communication problem between the controller and the TST board, also referred to as the glass panel or touch panel. The controller communicates through specific connectors, with P4 and P10 on the controller side connecting to P1 on the auxiliary board and J1 on the glass panel.

Communication failures of this type are most often caused by loose, corroded, or damaged wiring between the relevant connectors rather than an outright failure of a board component. Vibration over time, heat exposure inside the oven cavity, or an improper reassembly after a previous repair can all cause connectors to seat poorly or wiring to develop breaks. Before replacing any board, a thorough inspection of the wiring harness and all connector points along the communication path is the appropriate first step.

If the wiring checks out and the fault persists, the diagnostic path diverges based on the sub-code. An F21 fault after confirmed good wiring indicates a failed auxiliary board requiring replacement. An F23 fault under the same conditions points to the glass panel as the defective component. If the controller itself is unable to establish communication with the auxiliary board regardless of wiring condition or board replacement, the controller is considered the failed component and must be replaced.

Source: manufacturer service documentation.

Common causes of F2

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    Connectors at P4, P10, P1, or J1 may have worked loose due to vibration or heat exposure. Visually inspect and firmly reseat all connectors along the communication path between the controller, auxiliary board, and glass panel.

  2. 02

    Damaged or corroded wiring

    Part replacement

    Wiring between the controller and secondary boards can develop breaks, burns, or corrosion, especially in high-heat environments. Check the full length of the harness for visible damage, melting, or oxidation at connector pins.

  3. 03

    Failed auxiliary board (F21 sub-code)

    Part replacement

    When the F21 sub-code appears and wiring has been confirmed intact, the auxiliary board itself has likely failed. Replacement of the auxiliary board is required to restore communication.

  4. 04

    Failed glass panel or TST board (F23 sub-code)

    Part replacement

    An F23 sub-code with confirmed good wiring indicates the touch panel or TST board has failed internally. The glass panel assembly must be replaced to clear this fault.

  5. 05

    Failed main controller

    Part replacement

    If the controller cannot communicate with the auxiliary board even after wiring inspection and auxiliary board replacement, the main controller itself is defective and must be replaced.

See the test procedure for each cause

Frequently asked questions about F2

What does F2 mean on a Electrolux oven?
The F2 error code indicates a communication failure within the oven's electronic control system. Sub-code F21 means the main controller has lost communication with the auxiliary board, while F23 means it has lost communication with the glass touch panel. The fault can stem from a wiring problem or a failed board component.
Can I fix the F2 error on my Electrolux oven myself?
A knowledgeable DIYer can begin by inspecting and reseating the wiring connectors at the controller, auxiliary board, and glass panel. If the wiring is intact and the sub-code is F21, replacing the auxiliary board is the next step. F23 points to the glass panel as the replacement item. If neither resolves the issue, the main controller may need to be replaced, which is a more involved repair.
Is it safe to use my oven while the F2 error is displayed?
It is not recommended to continue using the oven when an F2 error is active. A communication failure between control boards means the oven cannot reliably receive or process control signals, which could result in unpredictable behavior. The oven should remain out of service until the fault is diagnosed and repaired.
Will resetting the oven clear the F2 error code?
A power reset by unplugging the oven or switching off the circuit breaker may temporarily clear the display, but the F2 error will return if the underlying communication fault is still present. A reset does not repair loose wiring or a failed board. A proper diagnosis and repair of the communication path is required for a lasting fix.
How much does it cost to repair an F2 error on an Electrolux oven?
Repair costs vary depending on which component has failed. Wiring repairs or connector reseating can be low cost if done yourself. Auxiliary board or glass panel replacements typically range from around $80 to $250 or more for parts alone, depending on the model. Main controller replacements tend to be at the higher end of that range. Adding professional labor can bring total costs to between $150 and $400 or more.

Related Electrolux oven codes

All Electrolux oven codes
View all 186 Electrolux oven codes

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

Get Started

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