What is the problem of Beijing Hyundai Elantra fault code PD0068?

The fault is explained by the wrong relationship between the air flow sensor or the intake manifold absolute pressure sensor. The computer determines the working conditions of idle speed (throttle closed), partial load, acceleration/deceleration and full throttle opening according to the signal of throttle position sensor, and adjusts the fuel injection duration and ignition timing according to the signal of air flow sensor or intake manifold absolute pressure sensor and the signal of throttle position sensor. If the input value of the throttle position sensor signal is lower than or higher than the input value limit of the intake manifold absolute pressure sensor for more than 300 seconds, the computer will record the fault code 0068. (Basically, the intake pressure sensor is broken) —— Sheng Xing Hyundai Quick Repair Shop, Heishan County, Jinzhou City