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Home >> Subaru >> 2019 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (Except For STI) (3 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P1191: Fuel Rail Pressure Sensor "A" Circuit No Activity Detected >> Outline Of Diagnosis

Outline Of Diagnosis

Detect the signal stuck of the fuel pressure sensor.

Judge as NG when the voltage change amount per unit time of the fuel pressure sensor does not exceed the threshold value.