Which of the following components can cause excessively high pressure in a returnless fuel delivery system?

Question

Quizplus · Accepted Answer

In a returnless fuel delivery system, the fuel pressure is controlled by the fuel pressure regulator, the fuel pressure sensor, and the PCM (Powertrain Control Module). A fault in any of these components can cause the system to malfunction, leading to excessively high pressure. The fuel pressure regulator may fail to regulate pressure properly, the fuel pressure sensor might send incorrect readings to the PCM, and a faulty PCM may incorrectly interpret sensor data or control the fuel pump improperly. Therefore, all the listed components can cause excessively high pressure in the system.

Which of the Following Components Can Cause Excessively High Pressure