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  1. QG18DE P1273 A/F Sensor 1 (Bank 1) Lean Condition: SOLUTION!

    General Maintenance
    Hey everyone, Just wanted to share my 'Lean Condition' P1273 drama. So, I have 2004 Sentra 1.8S, CA edition (107K). No mods, all stock. I just installed the 'Fuel Pump Repair kit' from courtesynissan to fix the 'Hard Start' issue. This problem has been solved since install of the repair...