Secondary Heated Oxygen Sensor

(_PO137_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P0137: A low voltage problem in the Rear Secondary P0137 Heated Oxygen Sensor (PO2S) (Bank 1, Sensor 2) circuit.
(_PO157_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P0157: A low voltage problem in the Front Primary P0157 Heated Oxygen Sensor (HO2S) (Bank 2, Sensor 2) circuit.




(_P0138_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P0138: A high voltage problem in the Rear Secondary P0138 Heated Oxygen Sensor (HO2S) (Bank 1, Sensor 2) circuit.
(_P0158_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P0158: A high voltage problem in the Front Secondary P0158 Heated Oxygen Sensor (HO2S) (Bank 2, Sensor 2) circuit.




(_P0139_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P0139: A slow response problem in the Rear Secondary Heated Oxygen Sensor (HO2S) (Bank 1, Sensor 2) circuit.
(_P0159_)
- The scan tool indicates Diagnostic Trouble Code (DTC) P0159: A slow response problem in the Front Secondary P0159 Heated Oxygen Sensor (HO2S) (Bank 2, Sensor 2) circuit.