P1371 & p1364
 

I have been having an intermittent misfire in cyl 5, occasionally throwing a CEL, but would see it on a code reader P305.

A couple of bottles of fuel system cleaner seemed to fix the P305 for a bit and it only happened at idle

I scanned with my durametric and now see P1371 Valve lift control check sum and P1364 valve lift control Cyl 5

any ideas on fixing?

If I drive it am I in danger of an engine failure?

Most likely a restricted oil passage in the valve control system, or a Vario Cam+ actuator unit.