DTC P0139: Notes
DTC P0139 : Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Slow Response
How To Use This Service Information .
NOTE:
- Before you troubleshoot, review the How to Troubleshoot .
- If there are leaks from the exhaust system, this DTC will be set. Check for damage in the exhaust pipe and repair it if needed.