dtc code p0102 with check engine light comes on on 2002 Chevrolet Impala

the check engine light is on and the code for not passing emissons p0102 i have already replaced the air flow sensor whats wrong

by in Elkhart Lake, WI on April 03, 2009
2 answers
ANSWER by on April 05, 2009
Did you clear the code Yet?
ANSWER by on May 26, 2011
YES AND CAME BACK ON AND RUN BAD