P0138
DTC P0138 : O2 Sensor (Bank 1 Sensor-2) Circuit Low Voltage / High VoltageWiring Diagram:
Wiring Diagram
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 be 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 temp.: -8 degrees C (18 degrees F) or higher
- Engine coolant temp.: 74 - 110 degrees C (165 - 230 degrees F)
- Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg (75 kPa) or more)
1. Connect scan tool with ignition switch turned OFF.
2. Turn ON ignition switch and clear DTC, pending DTC and freeze frame data in ECM memory by using scan tool and start engine.
3. Warm up engine completely.
4. Keep driving 50 - 60 km/h (30 - 40 mph) for 3 min. or more.
5. Stop vehicle and check if pending DTC exists by using scan tool. If not, check if oxygen sensor monitoring test has completed by using scan tool. If not in both of above checks (i.e., no pending DTC and oxygen sensor monitoring test not completed), check vehicle conditions (environmental) and repeat Steps 3) through 5).
Step 1 - 3:
DTC Troubleshooting