First rule: Nothing is easy.

This code (like many others) doesn't tell you what has failed, it provides pointers to allow a full diagnosis. You would need the troubleshooting guide for your transmission to be able to determine all the possible causes. Off the top of my head, they would include a failed solenoid (this one), a fault in the transmission wiring harness, and a different failed solenoid which impacts this circuit. I am sure there are more.

I suspect that this code could be a caused by a failure elsewhere within the transmision, and if that failure is mechanical then you would require a full overhaul (your worst-case scenario).

The problem could be with the solenoid itself, and it is mounted in the valve body, accessible when the transmission pan is dropped. That is the best-case scenario.

Sorry that doesn't directly answer your question, but hopefully it provides some guidance on potential causes.

I would take it to a transmission shop that is familiar with this model of transmission and have them diagnose it.

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