Need Help with Trouble Codes P0326 and P2431

MULTIBURON

MEMBER
2006 CHEVROLET COBALT
46,000 MILES

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

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

TSB Number: 050604073 NHTSA Number: 10019583 TSB Date: December 1, 2005 Date Added to File: March 30, 2006
Failing Component:
Engine And Engine Cooling:Engine
Summary:
Check engine light malfunction indicator lamp illuminated, usually without driveability symptoms, diagnostic trouble codes P0128, P0326, po420, P0717, P2431 set on l61 engine (follow si, and if necessary, reprogram engine control module (ec