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P1273 Diagnostic Trouble Code Discussion for January 2009

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 Altima S 2.5L MIL Lamp on VIN: 1N4AL11D35
P1273: Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring. ... code P1273 (A/F Sensor lean). Tested, and learned, a lot of the system. Air flow and air/fuel sensors test good, according to Mitchell. Oxygen sensor (rear) is showing rich. Cleaned air flow, cleared codes, and light was gone for a while. Now its back!!! T...
January 08, 2009
2005 Nissan Altima S 2.5L MIL Lamp on VIN: 1N4AL11D35
P1273: Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring. ... code P1273 (A/F Sensor lean). Tested, and learned, a lot of the system. Air flow and air/fuel sensors test good, according to Mitchell. Oxygen sensor (rear) is showing rich. Cleaned air flow, cleared codes, and light was gone for a while. Now its back!!! T...
January 08, 2009