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Home >> Saab >> 2002 >> 9-5 Arc, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Fault Code Diagnosis >> P0140: O2S Circuit - No Activity Detected, Sensor 2 >> Diagnostic Help

Diagnostic Help

Fault diagnosis concerns an electrical fault in connecting leads or in the sensor. Functions in the diagnostic tool related to the fault are:

NOTE: 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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