Monitor Description
Air Fuel Ratio Sensor (Sensor 1) Low/High Current:
Under air fuel ratio feedback control, If the air fuel ratio sensor (sensor 1) output current is less than -0.1883 mA (very rich condition) for 5 seconds despite the air fuel ratio sensor (sensor 2) output current being -0.0851 mA or more, the ECM stores DTC P2196-23. Alternatively, if the air fuel ratio sensor (sensor 1) output current is more than 0.1883 mA (very lean condition) for 5 seconds despite the air fuel ratio sensor (sensor 2) output current being less than 0.0551 mA, DTC P2195-24 is stored.
Air Fuel Ratio Sensor (Sensor 1) Limit Current:
The ECM monitors the air fuel ratio sensor (sensor 1) current during fuel-cut and detects any abnormal current values.
If the air fuel ratio sensor (sensor 1) output is 2.2 mA or more for more than 3 seconds of cumulative time, the ECM interprets this as a malfunction in the air fuel ratio sensor (sensor 1) and stores DTC P2195-19 (stuck on high side). If the air fuel ratio sensor (sensor 1) output is less than 0.47 mA for more than 3 seconds of cumulative time, the ECM stores DTC P2196-18 (stuck on low side).
