# How to Fix Frigidaire Error E46 (Door Lock Board)
The E46 error code on a Frigidaire washing machine is a critical failure that prevents the machine from starting or completing a cycle. This guide will help you understand the cause and walk you through the necessary steps to diagnose and resolve the issue.
—
## What Does Frigidaire Error E46 Mean?
The E46 error specifically indicates a problem with the **Door Lock Board or the communication circuit** responsible for controlling the door locking mechanism.
In essence, the Main Control Board (the brain of the washer) cannot properly communicate with, receive feedback from, or power the physical Door Lock Assembly.
While the door lock switch assembly itself can sometimes fail, this specific communication error (E46) often points to a failure in the **Main Control Board** or the CCU (Central Control Unit), which contains the circuitry necessary to manage the door lock system.
—
## Step-by-Step Fix: How to Diagnose Error E46
Before attempting any repairs, **always unplug the washer** from the electrical outlet.
### Step 1: Perform a Hard Reset
A communication glitch can sometimes trigger the E46 code. The simplest solution is to reset the machine’s memory.
1. **Unplug the washer** from the wall outlet.
2. Wait a minimum of **5 to 10 minutes** to allow any residual charge to dissipate from the control boards.
3. Plug the washer back in and attempt to start a cycle.
If the error immediately reappears, proceed to Step 2.
### Step 2: Inspect the Door Lock Assembly (Physical Check)
The door lock assembly is located inside the washer frame where the door closes.
1. **Check for Obstruction:** Ensure no clothing, socks, or foreign objects are blocking the latch or the physical locking mechanism.
2. **Check the Latch Strike:** Look at the plastic piece on the door itself (the strike). Make sure it is straight and not bent or damaged, which would prevent a proper connection.
3. **Listen for the Click:** If you can start a cycle (before the error triggers), listen carefully. You should hear a distinct click and whir as the door locks. If you hear nothing, the mechanism is dead.
### Step 3: Check Wiring and Harness
If you are comfortable removing the top panel of the washer (or the front panel, depending on your model), you can check the wiring harness connecting the door lock to the main control board.
1. **Locate the Harness:** Trace the wires running from the door lock switch back toward the main control board.
2. **Look for Damage:** Inspect the connections for loose plugs, frayed wires, or signs of burning or melting. Damage to this harness can easily cause a communication error. Reconnect any loose plugs securely.
### Step 4: Test and Replace the Door Lock Switch Assembly
If the wiring is intact, the next logical step is to replace the cheapest potential failed part: the door lock switch assembly.
* **Diagnosis:** If you have a multimeter, you can check for continuity and power supply to the lock (consulting your washer’s specific wiring diagram is recommended).
* **Solution:** Purchase and install a new door lock switch assembly. This part is relatively inexpensive and straightforward to replace.
**If the E46 error persists after replacing the Door Lock Switch Assembly, the diagnosis points squarely to the Main Control Board.**
### Step 5: Replace the Main Control Board (The Most Likely Culprit)
For communication errors like E46, the circuitry responsible for powering and monitoring the lock is often what has failed—and that circuitry resides on the Main Control Board (sometimes called the PCB or CCU).
Replacing the Main Control Board is generally considered the definitive fix for persistent E46 errors.
1. **Access the Board:** Depending on your model, the main board is usually located either behind the rear panel or, more commonly, under the top access panel.
2. **Take Pictures:** Before disconnecting anything, take several photos of the wiring harness connections to ensure the new board is connected correctly.
3. **Replace and Test:** Install the new board, reconnect the wiring, and reassemble the unit. The error code should now be cleared, and the washer should function normally.
***
**Check the price for a replacement Main Control Board here: https://www.amazon.com/s?k=Frigidaire+Main Control Board&tag=trivian-20**