Hi I don't think code 67 is correct you may have to check it again.
It may be 76 if so its been to some fault occurring during regen braking causing C1 to have to high a voltage. This results in the forward and reverse contacts pulling in and falling out and then will only close when the key switch is open and closed.

93 possibly due to hyd motor to hot, temp sensor has closed to battery negative.
I hope this info is helpfully. Regards Titus