P2278 Buick Oxygen (O2) Sensor Signals Swapped (Bank 1 – Sensor 3) / (Bank 2 – Sensor 3)

P2279 Buick Intake Air System Leak OBD Code: System: Subsystem:  P2279 Buick – (ASE)  Powertrain  Fuel and Air Metering Trouble Code Description: Intake Air System Leak Location: Analysis: Possible Causes:       Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick…