My car has been throwing codeP0402. I've done some research and haven't found anything specifically stating a solution for Cobalts. From what I understand it is one of the oxygen sensors that's causing the code. If any one here can help me out, I'll be so happy.
P0402 Exhaust Gas Recirculation Excessive Flow Detected
P0402 Exhaust Gas Recirculation Excessive Flow Detected