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 - Refer to: How to Troubleshoot the CVT System or How to Troubleshoot the Fuel and Emissions Systems .
NOTE: 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.