C-F2 Moderate Moderate DIY

Samsung Oven C-F2 — Internal Communication Error

Samsung Oven · Error code C-F2

What C-F2 Means

Communication failure between internal circuit boards (commonly main PCB and a secondary sub-PCB on dual-cavity or higher-end models).

Symptoms

  • C-F2 displayed
  • One cavity works, the other doesn't (dual-cavity models)
  • Random feature failures
  • Code returns after a reset

Common Causes

1
Loose internal harness

Inter-board harness unseated.

2
Failed sub-board

Secondary control PCB has failed.

3
Damaged inter-board cable

Cable insulation/conductors damaged by heat.

4
Failed main control board

Main PCB comm port failed.

How to Fix It

  1. Power-cycle at the breaker for 5 minutes.
  2. Open the rear/control access and reseat all inter-board connectors.
  3. Inspect harnesses for heat damage; replace if conductors are exposed.
  4. If the secondary cavity or feature is single-affected, replace the sub-PCB first.
  5. If the issue persists, replace the main control board.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Samsung oven sub PCB View on Amazon→

More Samsung Oven Codes

---- ---- — Invalid Temperature Setting -dC- -dC- — Flex Duo Divider Installed in Single Mode -dE- -dE- — Flex Duo Divider Not Installed bAd LinE Range bAd LinE — Power Connection Error bAd LinE bAd LinE — Bad Power Connection C-10 Range C-10 — Temperature Sensor Reading Error

All Samsung codes → All oven codes →

Verified against manufacturer documentation: samsung.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.