P1131
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
O2S. Switch point - lean. Sensor 1
Fault symptoms
On-Board Diagnostics
Type of diagnosis:
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Continuous. Terminated when fault criteria fulfilled. Restarts next driving cycle.
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Enable criteria:
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General conditions for this trouble code: Atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperature must be above -70°C.
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Engine running. Closed loop blocked in rich or lean mode for a number of combustions in order to maintain a voltage of 0.6V from oxygen sensor 2. The number of combustions that is required is adapted.
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Fault criteria:
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Closed loop blocked in rich mode for more than 35 combustions.
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Dependents:
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P0115, P0116, P0117, P0118, P0119, P0131, P0132 and P0134.
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System reaction to a fault:
OK report:
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Number of adapted combustions has dropped at some time during the driving cycle.
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Fault handling:
(See section
Fault handling III, other emission-related components and functions
for more information.)
Diagnostic help
Fault diagnosis concerns an internal fault in the sensor.
Functions in the diagnostic tool related to the fault:
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•
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Diagnostic status for the diagnosis.
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Note
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Oxygen sensor receives reference oxygen from the surrounding air via the connecting cables. For this reason, electrical contact spray or grease
must not
be used on the oxygen sensor connector.
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