engine light on/ had a diagnostic test done results were. air flow/restriction on 2007 Chrysler Aspen

detected-slow accumulation, the calculated map value is greater than the expected map value. what could cause this problem

by in Hollywood, MD on March 17, 2013
1 answer
ANSWER by , March 18, 2013
either congested cats. or you need to change air filter or upgrade to high air flow filter. there are fuel additives that will help clean the cats.