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P2448 - Secondary Air Injection System High Airflow (Bank 1)

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P2448 - SECONDARY AIR INJECTION SYSTEM HIGH AIRFLOW (BANK 1)

Description:  The secondary AIR system detects excessive mass air flow change with the pump ON and a rich exhaust system air fuel ratio.
Possible Causes: 
  • Secondary AIR outlet hose leak.
  • Secondary AIR outlet hose is disconnected.
Diagnostic Aids:  Measured air flow is less than expected. Visually inspect the secondary AIR inlet hose.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All refer to PINPOINT TEST HM .
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