I'm getting trouble code P115D plus random misfires. My DashCommand software at the same time won't show fuel trim, lambda, fuel pressure, etc. It was all working before I changed the timing chain. Timing chain timing showed correct when I turned it before closing the engine up. Also replace air and oil filters. The big boot from the air filter to the turbocharger had a tear at the turbocharged end, but I replaced that. Still getting the codes.