Sukhpreetpb65

I have a 2001 Subaru Forester L trim automatic, last owner put ej253 from 2005 outback. Both are SOHC but new engine is cam actuators (left unplugged as ej251 wiring doesn't have plug) Engine block is ej253 (with cam actuator) and everything else including timing gear is from 2001 forester (ej251) Now i am facing CEL light with P0341. I have checked and done diagnostic as per subaru repair manual. Link to photo and video gallery for reference

I would check fuel pressure regulator if it has fuel in top vacume hose or that hose is loose or cracks. I prefer to use subaru named brands only because subaru cars don't like aftermarket or other brand parts in my experience. After fuel pressure regulator would be fuel rail and injectors. Then maybe bypass fuel filter if its fuel issue. But there must be other signs like at idle, normal speed, top speed response.

2001 subaru forester with engine swap from 2005 outback and now having P0341. Its well taken care of by its age