Emmission test revealed problem code p0121. What is it and how much to fix on 2007 Chevrolet Cobalt

Check engine light comes and goes.

by in Chicago, IL on April 12, 2013
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , April 12, 2013
tbs code Throttle position sensor you can buy one and change it yourself