Installed 2016 engine into 2012 Prius V

I installed an engine from a 2016 Toyota Prius into my 2012 Prius. I had some difficulties with EGR and such, but I was able to get everything to fit and it runs well. The reason for my post is that I have a persistent check engine light. I've had a buddy run diagnostics, but he was unable to determine the cause.

I believe that the 2016 Prius engine may have a different cam shaft profile or some other engine change causing the engine to behave different than what the 2012 ECU is expecting. I would like to know if I am thinking along the right lines here.

The reason for my thought is that the 2016 engine has a lower HP rating. Also, the older Prius' have overheating issues or oil burning issues, I think. The 2016 engine had improvements made to alleviate these issues. In the process, I expect that the ECU was programmed differently.

If I am right, then I should be looking into reprogramming the ECU, rather than investigating the vehicle for a defective/faulty part or damaged wiring. Please offer some guidance. Thank you so much for reading!

 

P2196
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