In reply to Jearson.

I have the same problem when I swapped my 2010 terrain with a 2012 Engine. P228D and P0089 with reduce engine power. I was told the Camshaft and phaser was different shaped them now it runs worse.

In reply to Jimlaw4him.

I would start with doing a Crank Sensor Relearn…

2013 Captiva 2.4 (Same engine and system as Regal)
I did an inframe rebuild (excessive oil consumption and timing chain guide broke).
12,000 out of warranty.
Now I have a random misfire when thoroughly warm, at idle, in gear (P0300)
I got a P228D one time then it went away… The fuel pressure fluctuates wildly, the TPS reading fluctuates, timing goes retard by 30 degrees…
I also had a broken phaser on the exhaust cam (P0014)
But it won’t set a code…

In reply to Jearson.

you may have a wiring issue, you need to have it properly diagnosed.

I have a Buick Regal 2011 with Engine equinox 2015, I don’t know what is the problem the screen show me a message (Reduced Engine & stailbreak system) The code in the scan are P228D ( Sensor Fuel Pressure Regulator is Exceeded Control limits – Pressure too high) & P0089 (Fuel Pressure Regulator 1 Performance) I have Changed the Pump for Gas, Fuel injection fuel rail pressure sensor (GM-12635273), Fuel injection throttle body with throttle actuator (AC-delco 217-3428), High Pressure Fuel pump with seal,retainer,gasket,and bolt (ACdelco EP1028), Mass Air FLow sensor (15865791 OEM 167A), Mainfold Absulute Pressure Sensor (ISUMO 12591290) & 2 PCS OK 1516V Variable timing Solenoid Intake & exhaust camshaft Position actuator oil control Valve 4 Cyliner Engine 2.0 L 2.4L VVT OCV.
Always the problem is here.