Product review (5 stars): Repairs E41 Error on Frigidaire Affinity 100% as Advertised
The Caribbean Appliance Frigidaire Door Latch & Switch Assembly (for Front Loading washers) is 100% as good as advertised. It completely fixed our Frigidaire Affinity washing machine and saved us from a $90 service call + $75 part.

Pros:
This product is advertised at a substantially better price point (here) than most other retailers, appliance shops, or from the manufacturer.  We purchased the product to resolve "Error Code 41" or "E41" service code and it did exactly that.  The washing machine originally stopped functioning during its spin cycle -- initial troubleshooting revealed the E41 code on the display.

Steps I followed to replace the original unit:
Step 1 - Unplug the washing machine (also remove any access water that might splash)
Step 2 - Open the washer door and use needle-nose pliers to remove the thin, metal wire clamp & spring from the boot seal
Step 3 - Peel back the boot seal near the latch assembly area
Step 4 - Remove the two (2) screws holding the door latch in place
Step 5 - Insert hand behind the boot seal area, grab the door latch assembly, pull it out, and disconnect the wires (3 sets)
Step 6 - Insert your new latch assembly (might be a slightly different color than the original -- this is OK) and reattach the wires
Step 7 - Insert the original two (2) screws to hold the new latch in place, replace boot seal, replace wire clamp & spring
Step 8 - Plug washer back-in and test it out on Spin Cycle

Cons:
None -- keep in mind that this replacement product might be colored a little different than the original manufacturer's latch kit. This is completely OK and does not affect the functionality of the product.

Overall:
The E41 error is often caused by corrosive build-up on the internal soldering joints of the original Door Latch & Switch Assembly mechanism. You can absolutely remove the unit, open it up, and use small wire brushes or picks to scrape off the joints in an attempt to repair it without purchasing this product.  That being said, this price point is to good to pass up for a guaranteed long-lasting fix that comes with an optional extended warranty -- I highly recommend it. Do-it-yourself fix. No Service Call required. 5 Stars.