Frigidaire Dishwasher ER Error Code – Meaning, Causes & Fix

FrigidaireDishwasherUpdated 2026-06-02

Frigidaire dishwasher error code ER is a control board communication fault that appears when the main control board loses communication with one of the dishwasher's secondary boards or sensor modules — most commonly the user interface board or the motor control module. The ER code indicates that the internal data bus between electronic components has broken down, either because of a loose connector, a failed board, a software glitch, or a power surge. When ER is displayed, the dishwasher stops mid-cycle or refuses to start, as it cannot operate safely without reliable communication between its control systems. In most cases, a power cycle resolves a temporary ER error, but recurring codes indicate a hardware fault requiring component replacement.

Quick Answer

What it means

The main control board has lost communication with a secondary board or sensor. The dishwasher cannot operate without reliable internal communications.

Severity

High

Can you fix it yourself?

Partial — power cycling and connector checks are safe. Board replacement requires a technician.

Call a technician when

Contact Frigidaire Support if ER persists after a full power cycle and connector inspection.

What Does ER Mean?

Frigidaire dishwashers use a multi-board architecture. The main control board communicates with the user interface (control panel) board and motor/pump control modules via a data bus — a wired internal network that passes commands and feedback signals between components.

Error code ER appears when this communication breaks down. The most common failure points are:

1. Loose ribbon cable or wire harness connector: The flat cables that connect the main board to the UI board are vulnerable to working loose, especially after vibration from wash cycles. 2. User interface board failure: The touchpad/control panel board has failed and is no longer responding to the main board's queries. 3. Main control board failure: The main board itself has experienced a component failure and is no longer able to send or receive data. 4. Power surge damage: A voltage spike has damaged communication circuits on one or both boards. 5. Firmware glitch: A software error in the main board's firmware has caused the communication stack to crash — a power cycle often resolves this.

The ER error is distinct from cycle-specific errors (like drain or fill faults) in that it represents an infrastructure failure — the dishwasher's electronics cannot talk to each other, so no cycle function can proceed safely.

What Causes This Error?

Loose ribbon cable or wire harness connector between the main control board and UI board
Failed user interface (touchpad/control panel) board
Failed main control board
Power surge or voltage spike damaging communication circuits
Firmware crash on the main control board requiring a reset
Corroded or oxidized connector pins on internal board connectors
Water intrusion onto a control board from a leaking door gasket or spray arm
Damaged wiring in the door hinge area from repeated opening and closing

How to Fix ER

1
Perform a full power cycle. Press the Cancel/Drain button on the dishwasher to clear the current cycle. Turn off the dishwasher at its circuit breaker or unplug the power cord. Wait 5 full minutes for the control board capacitors to fully discharge. Restore power. Open and close the dishwasher door to reset the door switch, then attempt to start a new cycle. If the ER code does not return, the fault was a temporary firmware crash.
2
Inspect the control panel connector ribbon cable. Frigidaire dishwashers have a flat ribbon cable that runs from the door control panel down to the main board inside the door. To access it, open the door and remove the inner door panel screws (usually Torx T20). Carefully pull the inner panel away slightly to expose the ribbon cable. Check that the ribbon connector is fully seated in its socket at both the UI board end and the main board end. Press it firmly into place and reassemble.
3
Check all wire harness connectors on the main control board. With the power off and unplugged, remove the inner door panel fully and locate the main control board. Inspect every plastic connector plugged into the board. Disconnect each one, look for corrosion or bent pins, and firmly reconnect. Pay special attention to the connectors on the bottom edge of the board where vibration from wash cycles tends to work connections loose over time.
4
Inspect for water damage on the boards. With the inner door panel removed, visually inspect both the UI board and the main control board for signs of water intrusion — white mineral deposits, rust-colored staining, or corrosion on circuit traces. Water damage on a board requires board replacement; individual component repair is not practical. If damage is evident, note which board is affected for the parts order.
5
Test after reassembly. Reassemble the inner door panel, restore power, and attempt to start a short wash cycle. Listen for normal cycle sounds (water filling, pump running). If ER does not reappear and the cycle completes, the loose connector was likely the root cause. Monitor over the next several cycles to confirm the error does not return.
6
Document the error for support escalation. If ER returns consistently, photograph the error display and note how many seconds or minutes into the cycle it appears. This information helps Frigidaire support technicians identify which board is failing. Contact Frigidaire support with the dishwasher's model number (found on the door frame sticker) and purchase date.

When to Call a Professional

A persistent Frigidaire ER error after connector checks and power cycling requires replacement of the main control board or user interface board. Board replacement costs $100–$250 for parts depending on the model, plus $100–$200 for labor. Contact Frigidaire support at frigidaire.com or 1-800-374-4432. Frigidaire provides 1-year parts and labor warranty. Some Frigidaire models use the same main board as Electrolux — confirm the correct part number using your model number.

Can You Still Use the Device?

The dishwasher cannot run any cycles while error ER is displayed. Do not attempt to run cycles while the error is active, as the control systems cannot communicate reliably. Address the fault before resuming normal use.

Official Resources

Disclaimer: This article is for informational purposes only and does not constitute professional repair advice. CodeExplain is not affiliated with Frigidaire or any other brand mentioned. Always consult a qualified technician for complex repairs.