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P1273 Diagnostic Trouble Code Discussion for February 2011

Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring

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Trouble Ticket Help Requests for DTC P1273
Help Request Posted
2005 Nissan Maxima SE 3.5L Hesitation, Misfire, MIL Lamp on
P1273: Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring. This one is running rough I ran injector disable test all seem to be contributing the same. While running I can hear a popping out exhaust if I disconnect the a/f ratio sensor in front bank engine runs fine no popping idles smooth. If I try the same on the rea...
February 06, 2011