P0412 CODE??? help
03-17-2006, 03:26 PM
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P0412 CODE??? help Ive had my 99 camaro z28 m6 for about 3 months now and all of a sudden my service engine soon light comes on... i hooked my scan-tool up to it and it say P0412 which is the Secondary Air Injection System Switching Valve A Circuit Malfunction. i erased the code and it didnt come back on (the vehicle was warmed up). then i turned it off and started up the next morning and it came back on (the vehicle was cold). so what im asking is what is causing the code to appear. I know what and where the AIR system is but what is the "switching valve A"? any help would be greatly appreciated in how to fix this problem. thanks, chase.
