Hope you get this resolved soon.
On the drive….once a fault or warning flags, doesn’t it remain on the operators screen until you access it? You mentioned they’re saved faults, but do they have time stamp? Just curious.
Does this unit fault at any point either direction, or is there a pattern like say always around mid hatch going up?
Have you routined all connections at the drive itself?
If 43 continues to show up, check wiring on the controller for DLK and the module for Door Locks. (GL1 I think it’s called). I know you went through the locks, but might the car sill be nicking pick up rollers?
Are the transducers for DPP1 & 2 in good condition? They travel pretty close to the tape even when guides are new, and can get damaged easily if contact with the tape occurs. Viewing these inputs DPP from the cartop on inspection can sometimes reveal a blip.
And finally, the 5v is good on the SPU Link?