SAAB WIS ONLINE

T8 / P1131 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)

  P1131 00


O2S. Switch point - lean. Sensor 1

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine speed between 1500 and 2800 rpm.
Engine load between 200 - 400 mg/c.
No changes in load.
Closed loop blocked in rich or lean mode during several combustions in order to maintain voltage from heated oxygen sensor 2 at 0.6 V. The total number of required combustions are adapted.

Fault criteria:

Closed loop blocked in rich or lean mode during several combustions in order to maintain voltage from heated oxygen sensor 2 at 0.6 V. The total number of required combustions are adapted.

Dependent:

None

System reaction to a fault:

None

OK report:

Diagnosis completed without fault report.

Fault handling:

Type III
(See section Fault handling III, "Other emission-related components and functions" for more information.)

Diagnostic help

Diagnosis regards:

Defective oxygen sensor.

Functions in the diagnostic tool related to the fault:

Test value:
O2S 1
Closed Loop

(See also description of readings/activations in diagnostic tool)