Frigidaire Refrigerator Error Code E43
Frigidaire refrigerator error code E43: The control detected a relay or control fault in the door switch or door circuit.
Methodology: Reviewed against official Frigidaire refrigerator support guidance, then grouped by fault family before separating owner-safe checks from technician-level diagnosis.
Sources: Manufacturer fault-code sheets, service manuals, and recurring field-repair patterns.
- Frigidaire Owner Center - Refrigerator support — Official Frigidaire owner support entry point used to confirm refrigerator support and troubleshooting guidance.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What Does Error E43 Mean on Your Frigidaire Refrigerator?
Frigidaire refrigerator error code E43: The control detected a relay or control fault in the door switch or door circuit.
What typically fails: Door switch harness / relay output / main control board
What You're Probably Seeing
- → Door alarm behavior is erratic even when the doors are fully closed
- → Interior lights or dispenser functions do not respond correctly
- → The code returns immediately after a reset
Common Causes
- • Loose connector between display and main control board
- • Control board communication fault
- • Moisture or corrosion at a harness connection
What to Try First
- 1 Unplug the refrigerator and verify the door switches operate mechanically
- 2 Inspect accessible door-switch wiring and connectors for looseness or corrosion
- 3 Confirm the door is closing fully and the switch is not being obstructed
- 4 Arrange service if the relay or main control board needs testing
More Frigidaire Refrigerator Codes
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