P0137

DTC P0137 / P0138

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

NOTE:

- Be sure to troubleshoot first unexpected DTCs previously detected in "DTC Confirmation Procedure".
- Confirm that the following conditions are met in this "DTC Confirmation Procedure".

- DTC P0037 or P0038 is not detected.

1) Warm up engine to normal operating temperature.
2) Run engine at idle speed for 5 min.

DTC Troubleshooting

1.
Was "Engine and Emission Control System Check" performed?
YES -
Go to Step 2.
NO -
Go to Engine and Emission Control System Check Engine and Emission Control System Check.

2. DTC check

Is there any DTC(s) other than P0137 and P0138?
YES -
Go to troubleshooting for applicable DTC.
NO -
Go to Step 3.

3. HO2S signal circuit and ground circuit check

Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "C01", "E01" and HO2S connectors.
Check for proper terminal connection to "C01", "E01" and HO2S connectors.
If connections are OK, check the following points.
- Resistance of "A3" and "A4" circuits: less than 1 ohms
- Resistance of "A3" and "A4" circuits between HO2S connector and ground: infinity
- Resistance between "A3" circuit terminal and each terminal at HO2S connector: infinity
- Resistance between "A4" circuit terminal and each terminal at HO2S connector: infinity
- Voltage of "A3" and "A4" circuits: 0 - 1 V (with ignition mode of keyless push start system in "ON")

Are they in good condition?
YES -
Go to Step 4.
NO -
Repair or replace defective wire harness.

4. Exhaust system and air intake system check

Check exhaust system and air intake system for clogging or leak.

Are they in good condition?
YES -
Go to Step 5.
NO -
Repair or replace defective part.

5. HO2S heater circuit check

Check "A1" and "A2" circuits according to Step 2 through Step 3 under P0037 DTC P0037 / P0038 / P0054.

Are they in good condition?
YES -
Go to Step 6.
NO -
Repair or replace defective part.

6. DTC recheck

Replace HO2S. Service and Repair
Perform DTC confirmation procedure and check DTC.

Is DTC P0137 or P0138 still detected?
YES -
Replace ECM and recheck DTC. Service and Repair
NO -
End.