Warning: Disconnect power before servicing.
ErrBase

Frigidaire Dishwasher ER/UO Error Code: Door Lock Fault

Quick Answer

ER or UO on a Frigidaire dishwasher indicates a door lock fault. ER may be displayed during a lock command and UO during an unlock command, but both point to the door latch assembly 154740101. Before replacing the latch, check that nothing is physically obstructing the door from latching - a warped door, bent hinge, or object between the door and the tub rim can prevent the latch from engaging fully.

ER or UO on a Frigidaire dishwasher indicates a door lock fault. ER may be displayed during a lock command and UO during an unlock command, but both point to the door latch assembly 154740101. Before replacing the latch, check that nothing is physically obstructing the door from latching - a warped door, bent hinge, or object between the door and the tub rim can prevent the latch from engaging fully. If there is no physical obstruction and the latch is clean, the latch assembly has failed and needs replacement.

FrigidaireDishwasherSeverity: moderateDifficulty: intermediate85% DIY Success
Time to Fix
20–50 min
Difficulty
intermediate
Parts Cost
$15 – $28
Tools Needed
Flathead screwdriver, Phillips screwdriver

What Does the ER/UO Code Mean?

ER/UO is a door lock fault. Check for physical obstructions preventing full door closure first. If none, inspect the latch mechanism for damage. Replace door latch 154740101 if it fails to engage.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Door latch mechanism worn or broken40%
Physical obstruction preventing full door closure24%
Door misalignment from hinge wear or installation issue14%
Control board latch relay fault12%
Latch solenoid winding failure10%

Symptoms You May Notice

  • ER or UO displayed on control panel
  • Dishwasher will not start cycle - door not confirmed locked
  • Door latch audible click may be absent
  • Door may feel like it closes but does not fully engage

Can you reset a Frigidaire dishwasher to clear the ER/UO code?

After replacing the latch or clearing any obstruction, unplug for 60 seconds and restart. Close the door firmly and start a cycle to confirm ER/UO does not appear.

Tools Required for Diagnosis

Flathead screwdriverPhillips screwdriverTorx T20 screwdriver

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Open the dishwasher door fully and inspect the latch mechanism

Open the dishwasher door fully and inspect the latch mechanism on the door and the corresponding strike plate on the tub body. Look for broken plastic tabs, debris in the latch channel, or any visible physical damage.

2

Close the dishwasher door slowly and observe whether it closes

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Door Latch Assembly154740101 · $15–$28

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $22 (Parts) vs $600 (New Machine)

Frequently Asked Questions

What is the difference between Frigidaire ER and UO?
ER typically appears when the control board cannot confirm the door has locked at the start of a cycle. UO typically appears when the door did not unlock properly after a cycle. Both point to the same door latch assembly and are diagnosed and repaired identically.
Can I bypass the Frigidaire door lock to run a cycle?
No, and this should not be attempted. The door lock is a safety interlock that prevents operation with an open door. Bypassing it could result in hot water spray injury or a water spill. Replace the latch assembly to restore safe operation.

Related Frigidaire Dishwasher Error Codes

Code: I30Frigidaire Dishwasher I30 Error Code: Leak DetectedCode: PFFrigidaire Dishwasher PF Error Code: Power FailureCode: E30Frigidaire Dishwasher E30 Error Code: Dispenser Fault

Same Fix Works on These Brands

Frigidaire shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Electrolux washerElectrolux Washer Error Codes: Complete EFLS Front-Load GuideElectrolux washerElectrolux Washer E11 Error Code: Water Not Filling in TimeElectrolux washerElectrolux Washer E21 Error Code: Drain TimeoutElectrolux washerElectrolux Washer E13 Error Code: Water Leak DetectedElectrolux washerElectrolux Washer E35 Error Code: Water Level Sensor FaultElectrolux washerElectrolux Washer E41 Error Code: Door Lock Fault

Models Known to Experience ER/UO Errors

This repair applies to most Frigidaire dishwashers with this error code. Common model numbers include:

FFCD2413US, FFCD2418US, FGID2479SF, FGID2466QB, FFID2426TS

Last verified for technical accuracy on March 14, 2026