Frigidaire FFCD2418US 24 in Front Control Built-In Dishwasher 48 dBA Er-09 Error Fix: Communication Failure Between UI and Control Board

Error code Er-09 on the Frigidaire FFCD2418US 24 in Front Control Built-In Dishwasher 48 dBA means: Communication Failure Between UI and Control Board. There is a communication failure between the user interface control board and the main electronic control board. The two boards cannot exchange data. Check the wire harness and ribbon cable connections between the boards. Look for damaged pins or corroded connectors. Try unplugging and reconnecting the cables. If the connections are intact, either the UI control board or the main control board may be defective.

The most successful fix is "Test and Replace Faulty Control Board" (hard difficulty, ~60 minutes). Estimated DIY cost: $20-$30. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Test and Replace Faulty Control Board") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Anti-static wrist strap.

DIY cost: $20-$30. Professional repair typically costs $180-$250. Many homeowners save money by trying the top-ranked community fix first.

The Frigidaire FFCD2418US 24 in Front Control Built-In Dishwasher 48 dBA has 8 other known error codes, including: Er-01 (Water Leak Detected), Er-02 (Thermistor/Turbidity Sensor Failure), Er-03 (Wash Motor Failure), Er-04 (Upper Fan/Vent Failure), Er-05 (Upper Vent Failure), and 3 more.

Error code Er-09 also appears on 2 other Frigidaire models: FFCD2413US 24 in Built-In Dishwasher 60 dBA, Frigidaire FGID2468UF 24 in Gallery Integrated Built-In Dishwasher with OrbitClean Wash System. The fix may vary by model, so check each model's specific page for tailored repair steps.