2002 Daewoo Leganza only 2 sparks in 2 cylinders

Engine Mechanical problem
2002 Daewoo Leganza 4 cyl Two Wheel Drive Automatic

hi, my car is running on 2 spark plugs, i have changed the igntion coil 3 times, i have changed spark plugs and leads, still same problem,. i have tested with fault code reader to show as p0352, i dont understand plz help, local garage told me might be cam sensor but its not showing that on fault code reader

thanks