P2196

DTC P2195 / P2196: O2 Sensor Signal Stuck Lean / Stuck Rich (Sensor-1, Bank-1)

System And Wiring Diagram:

System and Wiring Diagram

A/F Sensor Description
Refer to A/F Sensor Description

DTC Detecting Condition And Trouble Area:

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

NOTE:
Check to make sure that the following conditions are satisfied when using this "DTC Confirmation Procedure".
- Intake air temperature: -10 °C (14 °F) to 80 °C (176 °F)
- Engine coolant temperature: 20 °C (68 °F) or more
- Atmospheric pressure: higher than 75 kPa (560 mmHg) (Altitude: lower than 2790 m (9150 ft))
- The following DTCs are not detected: ECT sensor, CMP sensor, IAT sensor, TP sensor, barometric pressure sensor, A/F sensor heater, HO2S sensor, HO2S sensor heater and A/F sensor (other than DTC P2195 and DTC P2196)

1. With ignition switch OFF, connect scan tool.
2. Turn ON ignition switch and clear DTC by using scan tool.
3. Start engine and warm up to normal operating temperature.
4. Drive vehicle at 40 mph (60 km/h) or higher. (engine speed: 2500 - 3000 r/min.)
5. Keep above vehicle speed for 4 min. or more. (Throttle valve opening is kept constant in this step.)
6. Check if DTC and pending DTC exist by using scan tool. If not, check if oxygen sensor monitoring test has been completed by using scan tool. If not in both of above checks (i.e., no DTC and pending DTC and oxygen sensor monitoring test not completed), check vehicle condition (environmental) and repeat Step 3) through 6).

Step 1-4:

DTC Troubleshooting

NOTE: Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to Precautions for DTC Troubleshooting.