I have a 2001 Bullitt Mustang GT that is supercharged.
My check engine light came on so I took it down to Autozone to have them run the codes. It came back with code P0412. When I referenced it on http://www.bullittarchive.com it said:
P0412 - Secondary Air Injection (AIR) system upstream flow----See DTC P1411
So I look up P1411 and it says:
P1411 - Secondary Air Injection (AIR)system downstream flow
The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system
*Electric AIR Pump
*Hose from AIR pump leak
*AIR bypass solenoid leak/blocked
*Hose from AIR pump blocked
*AIR bypass solenoid stuck open/closed
In order to test the AIR pump, it must be capable of driving the HO2S lean.
I can't find any vacuum leaks, so what should I check now?
My check engine light came on so I took it down to Autozone to have them run the codes. It came back with code P0412. When I referenced it on http://www.bullittarchive.com it said:
P0412 - Secondary Air Injection (AIR) system upstream flow----See DTC P1411
So I look up P1411 and it says:
P1411 - Secondary Air Injection (AIR)system downstream flow
The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system
*Electric AIR Pump
*Hose from AIR pump leak
*AIR bypass solenoid leak/blocked
*Hose from AIR pump blocked
*AIR bypass solenoid stuck open/closed
In order to test the AIR pump, it must be capable of driving the HO2S lean.
I can't find any vacuum leaks, so what should I check now?