P1273 Diagnostic Trouble Code Discussion for January 2009
Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring
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| 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 |
