I would like to know what action I should take on these codes. These codes come and go without clearing them. They return every 3 days or so. The car runs 100% no noises etc. I changed to a higher octane fuel with the same result also change air filter as well. It is a 2006 Cobalt 2.2.
P0326 PowerTrain Stored Knock Sensor 1 Circuit Range/Performance
P2431 PowerTrain Stored Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance
Sunday, November 21st, 2010 AT 3:58 PM