Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (LZ4)

WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (LZ4) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
A	0.8 TN/WH	3121	HO2S Low Signal (Bank 1 Sensor 2)
B	0.8 PU	3120	HO2S High Signal (Bank 1 Sensor 2)
C	0.35 GY/WH	3122	HO2S Heater Low Control (Bank 1 Sensor 2)
D	0.35 PK/BK	5294	Ignition 1 Voltage

Connector Part Information

OEM: 15326423
Service: 15306319
Description: 4-Way M Metri-Pack 150 Series Sealed (GY)

Terminal Part Information

Pins: A-D
Terminal/Tray: 12045773/2
Core/Insulation Crimp: Pins A, B: E/1
Core/Insulation Crimp: Pins C, D: See Terminal Repair Kit
Release Tool/Test Probe: 12094429/J-35616-3 (GY)