P0040

SAE VAG Description
P0040 16424 O2S Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2 Sensor 1

G108 - Heated Oxygen Sensor (HO2S) 2

- Oxygen Sensor (O2S) aging, bank 2, sensor 1, checking. Oxygen Sensor Aging Check

- Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC) checking. Oxygen Sensor and O2S Control Before Catalyst, Checking

Z28 - Oxygen Sensor (O2S) Heater 2

- Oxygen Sensor (O2S) heater before TWC checking. Oxygen Sensor Heater Before Catalyst

Note: Check to see if B1S1 and B2S1 oxygen sensors have been swapped. Check wire colors against wiring diagram to confirm correct location of oxygen sensor.