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Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Control System (2.5L) (Diagnostics) (2 Of 4)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0328: Knock/Combustion Vibration Sensor 1 Circuit High Bank 1 Or Single Sensor >> Notes

DTC P0328: Knock/Combustion Vibration Sensor 1 Circuit High Bank 1 Or Single Sensor: Notes

WARNING: This page is about a different variant/trim than selected.

1. - 

DTC detecting condition: 

Immediately at fault recognition

Trouble symptom: 

Wiring diagram: 

Engine Electrical System Ref. to WIRING SYSTEM (CROSSTREK MODEL (EXCEPT FOR HEV))>ENGINE ELECTRICAL SYSTEM .

G13227820Courtesy of SUBARU OF AMERICA, INC.
CAUTION: Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DO 2.5)>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD .
NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DO 2.5)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .
  1. CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR CONNECTOR  .
    1. Turn the ignition switch to OFF.
    2. Disconnect the connector from ECM.
    3. Measure the resistance between ECM connectors.

    Connector and terminal 

    (E158) No. 18 - (E158) No. 5:

    Is the resistance 600 kΩ or more?

    Yes:  Go to  2.

    No:  Repair the poor contact of ECM connector.

  2. CHECK KNOCK SENSOR  .
    1. Disconnect the connector from the knock sensor.
    2. Measure the resistance between knock sensor terminals.

    Terminals 

    No. 1 - No. 2:

    Is the resistance 600 kΩ or more?

    Yes:  Replace the knock sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>KNOCK SENSOR .

    No:  Repair the open circuit in harness between ECM connector and knock sensor connector.