Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Oxygen Sensor: Locations



Engine Controls Component Views

Engine Harness Components (4.4L)




1 - Engine Oil Pressure (EOP) Sensor
2 - G107
3 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
4 - Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
5 - Generator
6 - G105
7 - Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor

Engine Harness Components 4 of 5 (4.4L)




1 - C182 Engine Harness to I/P Harness
2 - C180 Engine Harness to I/P Harness
3 - C186 Engine Harness to Forward Lamp Harness
4 - Battery
5 - Fuse Block - Underhood
6 - Engine Oil Pressure (EOP) Switch
7 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
8 - Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
9 - Engine Control Module (ECM) Connectors
10 - C184 Engine Harness to Transmission Harness