Your main contactor solenoid is shorting out and spoofing components down-stream. I'm posting a link for the OEM part below. It's possibly the other components may be damaged (pump driver driver, motor drive driver, etc) but replacing this part is a good place to start.
https://shop.toyotaforklift.com/en/categories/forklift-parts-accessories/other/contactor-kit/p/005905684271
The codes are as follows:
AC-1: Semi-conductor switch abnormality
AD-1 Driver Motor Driver Communication Abnormality
AD-5 Pump Motor Driver Communication Abnormality
CB-2 MB (main Contactor) short
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