P1177 OBD Code Definition:
P1177 O2 Sensor Slow Response Bank 2
P1177 OBD Code Description:

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!)