Oxygen Sensor: Locations

Powertrain Component Views

Rear of Engine Compartment Components (LZ9/LZ4)




1 - Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 2
2 - Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 2

Front of Engine Components (LZ4)




1 - Transmission Control Module (TCM)
2 - X100
3 - Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 1
4 - X130

Front of Engine Components (LZ4)




1 - Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
2 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
3 - Throttle Body
4 - Fuse Block - Underhood
5 - Engine Control Module (ECM)
6 - Transmission Control Module (TCM)
7 - X100
8 - Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 1
9 - Starter Motor
10 - Engine Oil Pressure (EOP) Sensor
11 - Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 2
12 - Knock Sensor (KS) 2

Rear of Engine Components (LZ4)




1 - Manifold Absolute Pressure (MAP) Sensor
2 - Ignition Control Module (ICM)
3 - Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1
4 - Knock Sensor (KS)1
5 - Engine Coolant Temperature (ECT) Sensor
6 - Crankshaft Position (CKP) Sensor
7 - Vehicle Speed Sensor (VSS) (MN5/M15)
8 - Engine Oil Level Sensor
9 - Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 2
10 - Park / Neutral Position (PNP) Switch (MN5)