DTC Description

As follows, each failure code is expressed when the signal characteristics of the front oxygen sensor are excessively varied or when the signal between the front oxygen sensor and the rear oxygen sensor is abnormal.

1) Front oxygen sensor signal lean + rear oxygen sensor signal thick + air-fuel ratio control value limit reached: P219500 display fault code

2) Front oxygen sensor signal thick + rear oxygen sensor signal lean + air-fuel ratio control value limit reached: P219600 display fault code