Welcome to the forum.
According to the OBD Codes website, P2008 is an open circuit at the intake manual:
Symptoms of a P2008 DTC may include:
The engine may have a rougher than normal idle
At times the engine may exhibit a tendency to surge
There may be a slight reduction in low-end torque
The causes for this DTC may include:
The intake runner control solenoid is largely the problem. They are almost always situated where they are subjected to heat and dirt that fouls the filter causing them to fail. Secondly, the swirl flaps themselves become covered with soot from the EGR valve, and they lock in their current position. The MAF sensor or the EGR have the ability to set this code if they fail, however, they will set a code of their own to coincide with the P2008 code. In this case they would be diagnosed and repaired first and the codes erased
The intake manifold runner control solenoid
The swirl flaps are contaminated
Broken vacuum lines
Poor electrical connection
Open or short in the wiring harness
Read more at:
https://www.obd-codes.com/p2008