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Home >> Subaru >> 2016 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (WRX) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0191 Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1 >> Diagnostic Method

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Minimum HPFR pressure sensor output voltage (Fuel pressure)< 3.863 MPa > 1.015 V
Minimum HPFR pressure sensor output voltage (Fuel pressure)< -2.011 MPa > 0.232 V

Time Needed for Diagnosis:  Less than 1 second

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.