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.

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Poor driving performance
Knocking occurs

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.

Wiring diagram:

Engine Electrical System <Ref. to WIRING DIAGRAM , Engine Electrical System.>

Fig 1: Knock/Combustion Vibration Sensor 1 Circuit Low Bank 1 Or Single Sensor - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM. Measure the resistance between ECM connectors. Connector & terminal (E158) No. 30 - (E158) No. 34:	Is the resistance 600 kΩ or more?	Go to step 2.	Repair the poor contact of ECM connector.
2 CHECK KNOCK SENSOR. Disconnect the connector from the knock sensor. Measure the resistance between knock sensor terminals. Terminals No. 1 - No. 2:	Is the resistance 600 kΩ or more?	Replace the knock sensor. <Ref. to KNOCK SENSOR .>	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM connector and knock sensor connector Poor contact of knock sensor connector Poor contact of coupling connector