I have an AMANA SXD2252L refrigerator and the ice cube maker is getting too much water. this just started
The water valve on the back where the water supply comes in may be slow to close and leaks extra water in before it closes. Replacing or cleaning the valve will be needed. If the valve continuously leaks and never shuts off it should be replaced.
Could also be a problem with the switch that controls the valve?
Appliance Repair Aid
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If the OP can get to the leads feeding the valve, the problem can be isolated; when the volts go to zero the water should immediately stop.
Thanks for the link, Jeff1. I will be referring to it when my cranky icemaker fails outright.