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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Control System (Diagnostics) (HEV) (3 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P1235: High Pressure Fuel Pump Circuit >> General Description >> Outline Of Diagnosis

Outline Of Diagnosis

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Detect the malfunction of high pressure fuel pump circuit function.

Judge as NG when ECM detects any malfunction in the diagnostic items listed below.

Judgment 1: Diagnosis for Open Circuit

Judgment 2: Diagnosis for Overcurrent

Judgment 3: Diagnosis for Ground Short

Judgment 4: Diagnosis for Power Supply Short

Judgment 5: Diagnosis for Ground Short (Between ECM and High-Pressure Fuel Pump Driver) Judgment 6: Diagnosis for Power Supply Short (Between ECM and High-Pressure Fuel Pump Driver)