So my old engine had head gasket leak so i opted for new engine with 4000 miles from 2021 corolla hybrid. I installed the new engine but now i am having P0171, P0430 and P0a80 with P3021, P0AA6 ( unplugged the AC compressor ) and went away. I ordered 2 cells to replace the cell in block 11. I found that I crushed the throttle body gasket and that cracked might have caused the P0171 but I fixed that and still having the code. The engine does not switch to battery power once it warms up. It runs continuously but I can power on and off like normal prius. I checked all the hoses and just waiting for replacement cells to arrive. I am lost as what to check next. I also replaced the MAF sensor from my other working prius.
Like high voltage to the compressor is going somewhere unintended, say leaking to ground? Is the AC performance bad, not blowing cold?
So you put a corolla engine in a prius and are wondering about codes? I'm surprised you don't have more....
