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Home >> Subaru >> 2019 >> WRX STI Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (Diagnostics) (Except For STI) (2 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0191: Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1 >> Outline Of Diagnosis

Outline Of Diagnosis

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Detect the offset malfunction of the fuel pressure sensor.

Judge as NG when the difference of the relative pressure between the fuel pressure and the barometric pressure is equal to or more than the judgment value when the predetermined conditions are met.