Why Your P1091 Infiniti Light Is On and What to Do
If you just plugged a scanner into your car and saw the p1091 infiniti code pop up, you're probably feeling a mix of annoyance and confusion. It's one of those manufacturer-specific codes that doesn't always give you a straight answer right away. Essentially, your Infiniti is telling you that the Air Fuel (A/F) Ratio Sensor 1 on Bank 1 has noticed a "lean shift." In plain English? The engine thinks it's getting too much air and not enough fuel, and it's struggling to keep the balance right. ...