P1131

P1131 00

O2S. Switch Point - Lean. Sensor 1







Fault symptom
Check Engine (OBD II, EOBD).

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 is blocked (rich or lean) for a number of combustions in order to maintain 0.7 V from oxygen sensor 2. The prescribed number of combustions is adapted.

Fault criteria:
Closed loop blocked in rich mode for more than 40 combustions.

Dependent
None

System reaction to a fault:
None

OK report:
Diagnosis completed without fault report.

Fault handling:
Type III
(See Description of On-Board Diagnostics/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