Fault description

Diagnosis monitors the upper and lower voltage limits of the signals from the oxygen sensor 2 after catalytic converter and the upper limit of the internal resistance.

The fault is detected when the probe voltage is less than 0.498 V and greater than 0.352 V and the resistance is greater than 65534 Ohm.

Possible fault cause:

• Wiring harness of oxygen sensor 2 after catalytic converter defective
• Oxygen sensor 2 after catalytic converter defective