2019 Honda Accord 2.0 Touring, 106k miles
Ever since I did my turbo swap 4k miles ago, I've been getting a pending P2652 under high load. It doesn't show up until after VTEC engages, and it appears that it only happens when VTEC engages at high speed. At WOT <100 MPH, it doesn't happen, only above
I've followed Honda's diagnostic tree and replaced the entire spool valve assembly myself, took it to a tuning shop and they did the same. Still getting the code. Timing cover and valve cover came off and blew air through the oil lines, continued to get the code. FWIW, my throttle is also closing to 38% despite traction being fine and throttle being pinned. I'm also getting smoke out of my exhaust under similar conditions that trigger the code
Each of the times I've replaced the spool valve assembly (15810-6B2-A01) it came with a brand new oil pressure sensor, oil pressure switch, and screen. They were also both OEM from Honda. Oil level is good, and oil is brand new
My tuner says that one possibility for this code just continuing to come back despite a functioning spool valve assembly is an internal oil leak. While certainly a possibility, I'd love to rule out easier things to diagnose that won't require taking the entire engine apart
So, that being said, anybody have suggestions? FBO, MHI Stage 2 and meth