The DTC P2020 OBDII code is related to the value provided by the IMRC (Intake Manifold Runner Control) Sensor. This sensor is usually located at one end of the intake manifold and is intended to assist the vehicle computer in controlling the amount of air entering the engine at higher RPMs. If the IMRC Sensor does not work as expected, this code is set.
This code is configured for bank 2. That is, the side of the engine where cylinder number 1 is not located. The reasons for setting this code may be due to mechanical or electrical failures, depending on the vehicle manufacturer.