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Heated Oxygen Sensor (HO2S)- Bank 1 Sensor 2

Fig 1: Connector End View Heated Oxygen Sensor (HO2S)- Bank 1 Sensor 2
GM280761Courtesy of GENERAL MOTORS COMPANY
Heated Oxygen Sensor (HO2S)- Bank 1 Sensor 2

Pin Wire Circuit Function
A 0.5 TN/WH 3121 HO2S Low Signal
B 0.5 PU 3120 HO2S High Signal
C 0.75 GY/WH 3122 HO2S Heater Low Control (LLT)
0.5 GY/WH 3122 HO2S Heater Low Control (LH2)
D 0.8 PK/BK 5294 Ignition Voltage
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 12160825
  • Service Connector: 15305801
  • Description: 4-Way M Metri-Pack 150 Series (BK)
Terminal Part Information
  • Terminated Lead: Pending
  • Release Tool: J-38125-12A
  • Diagnostic Test Probe: J-35616-3 (GY)
  • Terminal/Tray: 12045773/2
  • Core/Insulation Crimp: E/1