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Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Control System (2.0L (Except For HEV)) (Diagnostics) (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)