17585/P1177
From Ross-Tech Wiki
17585/P1177 - Bank2: O2 (Lambda) Correction Behind Catalyst: Control Limit Reached
Possible Causes
- Intake Air System leaking
- Oxygen Sensor(s) and/or Oxygen Sensor Control faulty
Possible Solutions
- Check Intake Air System for Leaks (False Air)
- Check Oxygen Sensor(s) and/or Oxygen Sensor Control (all of them!)