Just probed O2 sensor...Reads 0.8v. Definitely running rich according to O2 sensor.

Since the duty cycle reads 50-55%....what could be causing this rich condition? Injectors leaking?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k