I have a 2009 Volvo c70
getting codes po,340&po365

 

these codes are saying the cam shaft position sensors are reporting the cams are not where the ECU expects them to be or the signal is not getting to the ECU. Could be a timing belt issue, so that's where I'd start by checking the timing marks and inspecting the belt. Could be related to the VVT gear(s) which is driven by oil pressure, could be related to wiring or the cam position sensors... Have you had any recent service work or any other odd behavior?