Honda Civic manuals

Subaru Legacy Service Manual: Dtc p0151 a/f / o2 sensor circuit low voltage bank 2 sensor 1

DTC DETECTING CONDITION:

Immediately at fault recognition

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.

WIRING DIAGRAM:

Engine Electrical System ENGINE TYPE EZ (WITHOUT PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

Engine Electrical System ENGINE TYPE EZ (WITH PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK FRONT OXYGEN (A/F) SENSOR CONNECTOR AND COUPLING CONNECTOR.

Has water entered the connector-

Completely remove any water inside.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0151 A/F / O2 SENSOR CIRCUIT LOW VOLTAGE BANK 2 SENSOR 1

2.CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM and front oxygen (A/F) sensor.

3) Measure the resistance between ECM connector and chassis ground.

Connector & terminal

(E158) No. 45 — Chassis ground:

(E158) No. 44 — Chassis ground:

Is the resistance 1 M- or more-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0151 A/F / O2 SENSOR CIRCUIT LOW VOLTAGE BANK 2 SENSOR 1

Repair the short circuit to ground in harness between ECM connector and front oxygen (A/F) sensor connector.

3.CHECK FOR POOR CONTACT.

Check for poor contact of the front oxygen (A/F) sensor connector.

Is there poor contact of front oxygen (A/F) sensor connector-

Repair the poor contact of front oxygen (A/F) sensor connector.

Replace the front oxygen (A/F) sensor. Front Oxygen (A/F) Sensor

1. OUTLINE OF DIAGNOSIS

NOTE:

For the detection standard, refer to DTC P0131. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0131 A/F / O2 SENSOR CIRCUIT LOW VOLTAGE BANK 1 SENSOR 1

Dtc p0152 a/f / o2 sensor circuit high voltage bank 2 sensor 1
DTC DETECTING CONDITION:Immediately at fault recognitionCAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mod ...

Dtc p014f a/f / o2 sensor slow response - lean to rich bank 2 sensor 1
NOTE:For the diagnostic procedure, refer to DTC P014E. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P014E A/F / O2 SENSOR SLOW RESPONSE - RICH TO LEAN BANK 2 SENSOR 11. OUTLINE OF DI ...

Other materials:

Removal
1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. NOTE2. Remove the rod - power rear gate. Power Rear Gate Rod > REMOVAL3. Remove the trim panel - rear apron LH and trim panel - rear quarter trim UPR rear LH. Rear Quarter Trim > REMO ...

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