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P0051 Diagnostic Trouble Code Discussion for March 2007

Air Fuel Sensor (Bank 2 Sensor 1) Heater Control Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0051
Help Request Posted
2002 Nissan Xterra SE 3.3L MIL Lamp on VIN: 5N1ED28T82
P0051: Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Control Circuit Low. this xterra will blow fuse #14 periodically. have checked o2 sensor heater and continuity and resistance seem to be ok. have read some about ecm being bad but not in xterras. do the xterras have ecm problems also or am i missing something.
March 19, 2007