Acting like a manual trans - engine connected directly to wheels

We replaced the engine and trans last year and have put on 6524 miles since then.

First indication of a problem was jerky backing up. Then had to reboot to get the engine to run. Within a few miles even that would not work. No engine run.

All fuses checked good. Heavy duty fuse bar looks good.

Engine won't start. Battery will move it forward but not so good backwards. When moving forward, the engine turns like it has a manual trans in gear with the clutch engaged. When in neutral we push the car and the engine turns a bit.

There is a long story leading up to this , but the realization of the connection between the engine and wheels seems like the most important part right now.

The inverter coolant disappeared. I discovered this soon after the failure.

Codes through the process have been: P3190, P0031, C2310, C2318, B1826, C1259, C1310.

We have replaced the Inverter and the HV Battery. No joy.

Ready light has been working but the power button will not go green with the foot on the brake. But green if we don't press on the brake.

Full disclosure. I've been driving with the red triangle on all the time. I can reset the screen, but get the P lock notification every time I stop. Car was working and I needed it for work, (I deliver packages for USPS) so I didn't pursue those problems.

Normally I would just replace the car. I buy them cheap, remove everything but the driver's seat and run em until dead, but this one is blue and I just fancied it up with stars and stripes and I'd like to keep it going.

 

You got me thinking so we lifted the front end and it started right up and spun the wheels. Step on brake and kill the engine. So it is definitely locked up inside. No way that could be a control issue, right? Something mechanical locked up inside. Wondering what might cause this.

I guess it's time to pull the engine/trans and see what is going on.