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Heated Oxygen Sensor 2 (HO2S2) (LDA)

Fig 1: Heated Oxygen Sensor 2 (HO2S2) Connector End View
GM1466979Courtesy of GENERAL MOTORS CORP.
Heated Oxygen Sensor 2 (HO2S2) Connector Terminal Identification (LDA)

Pin Wire Circuit Function
1 0.5 PU 1670 Heated Oxygen Sensor (HO2S) 2 Signal
2 0.5 PK/BK 1846 Ignition 1 Voltage
3 0.5 L-GN 413 Heated Oxygen Sensor (HO2S) 2 Low Reference
4 0.5 BN/BK 1671 Heated Oxygen Sensor (HO2S) 2 Heater Control
Connector Part Information 
  • OEM: AMP 174257-2
  • Description: 4-Way F 070 Series Econoseal-J MK-2 Cap Hsg 4P (BK)
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