This is how I diagnosed a p0028/P0026 code on a 2008 Subaru Legacy. This should work the same on many other Subies with the same VVT, or AVCS type system (Forester Impreza Legacy Outback Tribeca) Etc. I can do the same test with Honda V-tec spool valves too, and probably others I have not encountered […]
DIY How to diagnose and repair your Subaru with engine codes P0026 and P0028. Variable Valve Timing – VVT