P0026 Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)
P0028 Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
I have to be honest. This is the first time I’ve ever heard of an Intake Valve Control Solenoid which appears to be a gidgie that makes small adjustments in intake valve timing. What I’d do is Google “Intake Valve Control Solenoid” and see how they work (might be different in different cars) what sorts of malfunctions they are prone to. Since it seems to be affecting both banks, it’s probably not the solenoids themselves but something they depend on like electrical power or oil pressure. Good luck.