Condition for fault identification

Test condition:

The fault is recognized when the voltage of the oxygen sensor 2 behind the catalytic converter is above 0.669 V (too rich).

Potential problem source(s):

Oxygen sensor 2 behind catalytic converter defective

• Leak in exhaust system upstream of oxygen sensor 2 behind catalytic converter
• Defect in wiring harness to oxygen sensor 2 behind catalytic converter

Terminal condition: none

Voltage condition:

• None

Temperature condition:

• Engine temperature > 85 °C

Time condition:

• None

Other conditions:

• Engine on