Please sir i need your help. I saw your post back then in 2013 about obd code p1349, am having similar problem now and my car 8s seriously losing power. Fuel pump has been changed several time, OCV has been changed too. But before then the VVT actuator was making knocking sound so it was repaired i don't know if that's the problem because the timing has been set severally by different mechanic. But the code still returns after clearing it and the car is losing power with poor acceleration. Please sir help out on what to do to solve this problem.

Please am experiencing similar problem now with my matrix 2003 XRS, its losing power, fuel ⛽ pump has been changed, OCV has been changed, but the camshaft actuator has not been changed so i don't know if that's what i should do next to solve this problem.