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P0031 Diagnostic Trouble Code Discussion for May 2012

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
2008 Subaru Outback 2.5i 2.5L MIL Lamp on VIN: 4S4BP61C98
P0031: b1 s2 heater circuit low. ... light on.retrieved codes for both 02 heater circuits.removed front 02 and found no power on pin 6.no poer to rear 02 heater either.found blown fuse for heater relay and throttle module relay.(sbf-7)replaced fuse and rechecked.fuse blown.unplugged both 02 s...
May 08, 2012