DTC P0139
WARNING: This page is about a different variant/trim than selected.
DTC P0139 : Secondary HO2S (Sensor 2) Slow Response
NOTE:
- Before you troubleshoot, review the general troubleshooting information .
- 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.
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P0139 Secondary HO2S (Sensor 2) Slow Response |
DTC (PGM-FI)
- DTC check
-1. Turn the vehicle to the ON mode.
-2. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P0139 Secondary HO2S (Sensor 2) Slow Response Is Confirmed DTC P0139 indicated?
YES (Confirmed DTC is indicated)
Replace the secondary HO2S (Sensor 2) .
NO (Pending DTC is indicated)
Check for poor connections or loose terminals at the secondary HO2S (Sensor 2) and the PCM, and the installation of the secondary HO2S (Sensor 2), then recheck.