Frigidaire Atf6700fs2. Machine is giving me message E90. Can someone tell me plz what this means? Ty

The error code E90 is just a group error code. It is indicating a communication error between the two boards in your machine. It does not indicate where the problem may be. A power glitch may have caused the E90 error code or a loose connection.
https://www.appliancepartspros.com/answers-for-frigidaire-control-electrical-137006000-ap4358809-question-70945.html

I don't understand SHANE circuit board. IF you replaced the board, it has been upgraded and you need to order a new wiring harness for it. Please post the model number

Good Afternoon Friend,

I understand you want to know where the filter is located on your Frigidaire washer, model# ATF6700FS2. The filter is located in the front right hand side of your appliance. It is located between the tub and the drain pump. If you are trying to get to the filter, this is typically not a do it yourself job, as there are no step by step instruction manuals. I would suggest contacting your local authorized technician if you need assistance. They have been trained on your appliance and will be able to best assist. Hope this is helpful.

-Best Regards-
WP

E90. The E90 error code is not a common error but it may occur when the washing machine electronics get wet for some reason. This may happen if wet clothes are left in the washer for a prolonged period after the wash cycle ends or if the same load is washed repeatedly.

Basic Reset
One of the first steps whenever an error code appears on a Frigidaire washer is to perform a simple reset to the machine. To reset the washer, press and hold the "Cancel" button for 15 seconds. Then try to set a new wash cycle and press "Start." Note that any clothes that have finished washing should always be removed promptly after the cycle is done.

do you have the machine's manual ? if you do try and find out what the message mean

E 90 is an error code regarding the main pc board connection.

the solution is to secure all connection to and from the main board.
tighten the sockets and make sure they are not loose that could create a problem while vibrating and shaking.

tnx 4 using fixya,

drcool

call frigidaire for factory service or have the dealer replace it

When the washing machine is turned on... it beeps and displays error message E90 it wont operate.

what can i do ?

an E90 fault is a problem relating to the main control module found behind the front facia. it could just be a bad connection on the board connections though