Oxygen Sensor: Locations

Powertrain Component Views

HO2S Sensor 2 (Post HO2)




1 - Heated Oxygen Sensor (HO2S) 2

Rear of the Engine (L26/3.8L)




1 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2 - Throttle Actuator Control (TAC) Module
3 - Exhaust Gas Recirculation (EGR) Valve
4 - Fuel Injector 6
5 - Fuel Injector 4
6 - Fuel Injector 2
7 - Manifold Absolute Pressure (MAP) Sensor
8 - Camshaft Position (CMP) Sensor
9 - Engine Oil Pressure (EOP) Sensor
10 - Knock Sensor (KS) 2
11 - Heated Oxygen Sensor (HO2S) 1

Above the Transmission (L26/3.8L)




1 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2 - Intake Manifold
3 - Vehicle Speed Sensor (VSS)
4 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
5 - G114
6 - Transmission

Right Side of Engine-Engine Front (L26/3.8L)




1 - Exhaust Gas Recirculation (EGR) Valve
2 - Manifold Absolute Pressure (MAP) Sensor
3 - Throttle Actuator Control (TAC) Module
4 - Ignition Coil / Module
5 - Crankshaft Position (CKP) Sensor
6 - Engine Oil Pressure (EOP) Sensor
7 - Camshaft Position (CMP) Sensor
8 - Heated Oxygen Sensor (HO2S) 1