Fault description

The fault code memory must be empty. Diagnosis monitors the lower and upper limit for the voltage of the oxygen sensor after catalytic converter

The fault is detected when the signal of the oxygen sensor after catalytic converter is less than 0.151 V for a longer period of time while driving at steady speed

Possible fault cause:

• Leak in exhaust system
• Wiring defective
• Oxygen sensor before catalytic converter or after catalytic converter defective