METHOD FOR DIAGNOSING FAILURE OF FUEL PRESSURE SENSOR FOR HIGH-PRESSURE PUMP OF GDI ENGINE

摘要

A method for diagnosing a failure of a fuel pressure sensor for a high-pressure pump of a GDI engine includes a data collection step of collecting information on a state of a vehicle. A sensor condition determination step determines whether data collected in the data collection step meets conditions for determining the failure of the fuel pressure sensor. A failure determination step determines whether the fuel pressure value of the pressure sensor for the high-pressure pump is greater than or equal to a first reference value, and simultaneously, whether a fuel amount learning value is greater than or equal to a second reference value.