SAAB WIS ONLINE

DTC P1152 O2 SENSOR CIRCUIT RANGE/PERFORMANCE (LOW) (BANK1 SENSOR1)

DTC P1152 O 2 SENSOR CIRCUIT RANGE/PERFORMANCE (LOW) (BANK1 SENSOR1)

DTC DETECTING CONDITION:


• Two consecutive driving cycles with fault

• GENERAL DESCRIPTION


Important

After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode .


WIRING DIAGRAM:


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

Turn the ignition switch to OFF.

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

Measure the resistance of harness between ECM and front oxygen (A/F) sensor connector.

Connector & terminal

(B84) No. 29 — (B18) No. 3:

(B84) No. 19 — (B18) No. 4:

Is the resistance less than 1 Ω?

Yes


No

• Repair the harness and connector.

•
Note

In this case, repair the following:

• Open circuit in harness between ECM and front oxygen (A/F) sensor connector

• Poor contact in front oxygen (A/F) sensor connector

• Poor contact in ECM connector



CHECK POOR CONTACT.

Check poor contact in front oxygen (A/F) sensor connector.

Is there poor contact in front oxygen (A/F) sensor connector?

Yes

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


No

Replace the front oxygen (A/F) sensor.