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Heated Oxygen Sensor (HO2S) 1 (LY7)

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Heated Oxygen Sensor (HO2S) 1 (LY7) Connector End View
GM1523693Courtesy of GENERAL MOTORS CORP.
Heated Oxygen Sensor (HO2S) 1 (LY7)

Pin Wire Circuit Function
1 0.5 PU/WH 1665 HO2S High Signal
2 0.5 WH 5279 HO2S Pump Current
3 0.8 PK/BK 5293 Ignition 1 Voltage
4 0.75 GY/WH 3113 HO2S Heater Low Control Sensor 1
5 0.5 TN 1664 HO2S Low Signal
6 0.5 L-GN 5278 HO2S Input Pump Current Sensor 1
Connector Part Information 
  • OEM: 42122200
  • Service: 88988764
  • Description: 6-Way F Flat Contact Housing Sealed (BK)
Terminal Part Information 
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
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