2016 E2 Restoration Project Assistance

Hello Everyone,

I’m back in the GEM world and just picked up my first “new generation” 2016 GEM E2 at auction.

It was driven into a pole and had some relays/small parts removed. I bought a 2019 E2 donor cart for parts. From the donor, I swapped in the cluster, missing relays (fuse box + harness relay), and the ignition switch that brought the crashed cart back to life.

Now all accessories work and the cluster shows ~50% charge, but the cart won’t move, and I’m getting this fault code:

520608 31

Does anyone know what this code points to? Also, if it’s the controller, can I swap the controller and motor from the 2019 donor (6.5 kW motor | AGM Distance | 1kW charger) into my cart (5 kW motor | Max lithium | 5kW charger),? The donor ran, but very slowly for some reason.

I can take some photos of the cluster tomorrow when I am back in my office.

Any assistance would be greatly appreciated!