DTC P2270, P2272: Notes

DTC P2270  : Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Signal Stuck LeanDTC P2272  : Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Signal Stuck Lean

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Before you troubleshoot, review the How to Troubleshoot .