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  1. ('09-'13) 2011 - P0137 - Rear O2 Sensor Circuit Low Voltage?

    EJ25 - 2.5L Turbocharged (2004-2013)
    This is on an '11 FXT, 102k. I replaced the oxygen sensor and used my Accessport to clear the code. I drove the car four or five separate times and it was fine, then the following day the code threw again. What's the next approach to this one?
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