Why does the engine shut off with a P3191 error?

What is your question?

I was recently rear ended at low speeds. The car ran fine after the collision but I used a hydraulic press to smooth out the passenger side of the trunk. This required some disassembly and reassembly of pretty much everything in the trunk except the hybrid battery, which I did not touch (though at one point I placed a large board against it to use to leverage the hydraulic press) . I put everything back together again, I think properly, but now the car starts, the engine runs for about 5 seconds, and then shuts down giving a P3191 error. Obviously, I messed something up in the trunk, though I haven't a clue how that could affect the engine other than possibly fudging the comms to the hybrid battery which I thought I was careful about avoiding. Any ideas?

How long has your 2001 Toyota Prius had this problem?

three days