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!)
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