DTC P053F-00: Cold Start Fuel Pressure Performance Bank 1: General Description

GDI ECM operates fuel pressure control valve (FPCV) with the signal from rail pressure sensor (RPS) to control optimized RPM and rail pressure. But ECM shows this DTC and enters limp home mode limiting fuel mass and maximum RPM in order to prevent abnormal control of ECM under the bad condition out of target rail pressure range.

Rail pressure monitoring error DTC shows indirectly the status of low pressure fuel and mechanical operating status of high pressure pump and fuel pressure control valve with the signal of rail pressure sensor and fuel pressure control valve.