One problem related to emission control has been reported for the 2004 Acura TL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Acura TL based on all problems reported for the 2004 TL.
The contact owns a 2004 Acura Tl. The contact stated that the check engine indicator light illuminated which indicated that the knock sensor failed. The vehicle hesitated while accelerating and the exhaust fumes had a strong aroma. The contact stated that the vehicle has a decreased in gas mileage. The contact will bring the vehicle to a dealer for a diagnosis. The current mileage was 56,829, and failure mileage was 56,200.