DTC Troubleshooting: P0037 (3.0L Engine): Notes

DTC P0037  : Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Heater Circuit Low Voltage

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NOTICE: 

Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Fuel and Emissions Systems (3.5L Engine) or How to Troubleshoot the Fuel and Emissions Systems (3.0L Engine) .