Oxygen Sensor: Locations

Engine Compartment View:

Components on ECM Harness
11 Engine Control Module (ECM)
12 Data Link Connector (DLC)
13 Malfunction Indicator Lamp (MIL)
14 ECM/ABS Harness Ground
15 Fuse Panel (2)

ECM Controlled Devices
20 Exhaust Gas Recirculation (EGR) Valve
21 Fuel Injector (4)
22 Idle Air Control (IAC) Valve
23 Fuel Pump Relay
24 Engine Fan Relays
25 Series/Parallel Cooling Fan Relay
26 Electronic Ignition (El) System Ignition Coil
27 Evaporative Emission Canister Purge Solenoid
28 Ignition 1 Relay
29 A/C Compressor Relay

Information Sensors
30 Manifold Absolute Pressure (MAP) Sensor
31 Pre-Converter (O2S 1) Oxygen Sensor
32 Throttle Position (TP) Sensor
33 Engine Coolant Temperature (ECT) Sensor
34 Intake Air Temperature (IAT) Sensor
35 Vehicle Speed Sensor (VSS)
36 P/N Position Switch (Automatic Transaxle only)
37 Crankshaft Position (CKP) Sensor
38 Knock Sensor
40 Post-Converter Oxygen (HO2S 2) Sensor
41 Camshaft Position (CMP) Sensor

Not ECM Connected
42 Evaporative Emission Canister (under vehicle behind right rear wheel)
43 Oil Pressure Switch
44 Air Cleaner
45 Fuel Cutoff Switch
46 G Sensor