Fault Code P0015 Exhaust Camshaft Position - Reset Issue

[StartX5]

Hi all-
My 2008 3.0si is giving an issue. Oil sludge engine and engine check light on with code P0015 (exhaust camshaft Position Timing - Over-retarded Bank 1).
I am running with this error code for 4 days until today (weekend).
Start engine, after 5-10 seconds, the RPM higher than 1 stalling idle and back to normal.

Today I have done:

1. Oil change
2. Replaced both VVT (Exhaust and Intake) Selenoid sensors
3. Replaced Camshaft Position Sensor (CMP)

Starting the engine, the check engine light is still there with the same code.
Reset check engine light and light does not go off.

Open the hood, verifying all sensors position, wire connections and they are all good.

Any ideas why it doesn't resolve the problem?

Thanks so much!
StartX5