Good day.. I have been working on Daughter's 04 Accord far too long and would appreciate your help.. Started with a Vtec oil leak so replaced the selenoid/pressure switch with oem and got 2647 obd code.. Have also replaced both plugs, both filter screens and changed the oil/filter and still have 2647.. Put it on computer and found that pressure switch is always on, the pressure switch is not being activated by oil pressure to open ground connection.. Tested switch and it's can be activated with 20-25 lbs of air pressure..Does anyone know the oil pressure path to the Vtec pressure switch?