2004 Volvo V40 Timing issues

[reliantkcar]

Last night had a freak accident on family members Volvo v40 wagon .

Changed master cylinder and before closing hood she removed the light we were using and the ball-chain thing to activate the light got sucked into the engine.

It went behind the crank pulley and the motor started knocking/tapping.

Spent hours getting the crank pulley off (why is one bolt smaller than the other 3?) and found timing belt was loose the exhaust cam was WAY off the intake was a little off.

It was so far off couldn't bring it to TDC turning the crank with a breaker bar it locked up. That must have been the loud knocking-tapping sound. Piston Valve contact....

Removed belt fought cam gears jumping got it back on time and test ran it.

Somehow valves must have survived ran fine noise gone. But had code P0337. Advanced the VVT exhaust cam gear one tooth. Also ran fine but immediate P0017 now but no P0337.

Already have a new timing belt, tensioner, Harmonic balancer, cam locking tool. Since it already had issues long crank stuttering and timing correlation codes before.

First question is it fine or is the engine eventually gonna blow up? Took it for a drive and it runs fine no noises.

Second question is why does it do P0337 and then P0017 with exhaust cam adjusted either side of the "mark"? The mark is some orange paint. I've seen videos where that camgear sprocket is supposed to move independent of the center but this one is totally solid.