Hyundai Genesis (DH): Fuel Delivery System / Fuel Pressure Sensor (FPS) Repair procedures

Fail-Safe Mode ItemFail-SafeDuty (%)85     If the fuel pressure sensor malfunctions, it enters fail safe mode. This means that the fuel pressure rises to match the increasing value of the current level and the pressure in the low pressure fuel line remains static despite the rising fuel pressure.

Removal 1. Turn the ignition switch OFF and disconnect the negative (-) battery terminal. 2. Release the residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line") 3.