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P0031 Diagnostic Trouble Code Discussion for May 2014

Air Fuel Sensor (Bank 1 Sensor 1) Heater Control Circuit Low Voltage


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Trouble Ticket Help Requests for DTC P0031
Help Request Posted
2002 Jeep Liberty Limited 3.7L backfire destroys in VIN: 1J4GL58K22
P0031: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low Voltage. we are getting ready to install a new intake.will not be able to test much until intake is installed.all work has been done at another shop.hope someone has run into this problem before.any imput may be helpful.we dont understand why it backfires before engine...
May 20, 2014