P22AA OBD Code Definition:
NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 2)

P22AA OBD Code Description:

2 thoughts on “P22AA

  1. Pedro Vinas

    Good morning,

    I have a 2011 BMW 328i that has 72,000 miles and it’s been running rough at low speeds, with a bump as it accelerate but runs fine at higher speeds.
    This is an intermittent problem. I have the following codes P22aa, P24aa and P2600.
    Can you provide any suggestions and a self-help guide to replacing the defective component that will most likely fix the existing problem?


    Pedro Vinas


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