DTC P0031, P0051: Notes

DTC P0031  : Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater Circuit Low Voltage DTC P0051  : Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Low Voltage

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NOTICE:  

Before you troubleshoot, review the How to Troubleshoot .