Screen and dash flashing reduced engine power code P00CA

[Kyler Vitek]

I have a 2014 gmc seirra and periodically when I'm driving my screen and dash will start flashing, radio cut in and out and if I try to accelerate I will get a reduced engine power warning.  The code is P00CA for the Fuel Pressure Regulator High Control Circuit High Voltage.  If I turn the vehicle off for 10 min the code clears and the vehicle operates fine.  I have already  taken it to 1 mechanic and they checked out the fuel pressure regulator and it was fine.  They could not get the vehicle to get the screen or dash to flash so I assumed the issue was fixed but it started doing it again 3 weeks later.  I have read many issues about bad grounds but those seem to be linked to power steering not the fuel pressure regulator.  Has anyone else experienced this issue?

Edited January 30, 2023 by Kyler Vitek