DTC P0136 Or P0156: Heated Oxygen Sensor: Notes

DTC P0136 = Heated Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
DTC P0156 = Heated Oxygen Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)

NOTE: Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block.