P0138
DTC P0137 / P0138: O2 Sensor Circuit Low Voltage / High Voltage (Sensor-2, Bank-1)System and Wiring Diagram
System And Wiring Diagram:
NOTE: When DTC P0138 and P0158 are indicated together, it is possible that HO2S ground circuit ("GRN") wire is open. When DTC P0138, P0158, P0107, P0113, P0118 and P0553 are indicated together, it is possible that sensor ground circuit ("GRY/GRN") wire is open.
DTC Detecting Condition and Trouble Area
DTC Detecting Condition And Trouble Area:
DTC Confirmation Procedure
NOTE: Check to make sure that following conditions are satisfied when using this "DTC Confirmation Procedure".
Other than MEXICO model:
- The following DTCs are not detected (when troubleshooting for DTC P0137): MAF sensor, Fuel system, PCV, A/F sensor (stuck rich) and HO2S heater.
MEXICO model:
- The following DTC is not detected (when troubleshooting for DTC P0137): HO2S heater.
1. With ignition switch OFF, connect scan tool to DLC.
2. Turn ON ignition switch and clear DTC.
3. Start engine and warm up to normal operating temperature.
4. Run engine at idle speed for 1 min. or more.
5. Check DTC and pending DTC.
DTC Troubleshooting
NOTE: Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to Precautions for DTC Troubleshooting.
