replaced the sensor already but still have the code, what else could it be?

Question

replaced camshaft sensor, still has the same code and stalls.

Answer 1

P0341 Camshaft position sensor performance

If the camshaft sensor fails , you would still be able to start the engine , but it would be at a extended cranking, The best way to start to resolve the issue is to check to see if the ECM was replaced due to internal contamination, at one time this was a Recall. Use TSB # 14515B titled ECM internal contamination.  you may have a failed ECM