P0161 OBD II Trouble Code Oxygen O2 Sensor Circuit Low Voltage (Bank2, Sensor2)

Symptoms of P0161 OBD II Trouble Code

  • HO2S heater power circuit open
  • HO2S heater ground circuit open
  • HO2S signal tracking (due to oil or moisture in the connector)
  • HO2S is damaged or has failed PCM has failed

Common Causes of P0161 OBD II Trouble Code

  • Replace HO2 Sensor
  • Repair open or short in power circuit
  • Repair open or short in ground circuit
  • Repair damaged connector due to tracking