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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 834 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0127 - Intake Air Temperature (IAT) Too High

P0127 - Intake Air Temperature (IAT) Too High

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.
P0127 - INTAKE AIR TEMPERATURE (IAT) TOO HIGH

Description:  Indicates that the IAT2 sensor has detected a concern in the charge air cooler CAC system.
Possible Causes: 
  • Blockage of heat exchangers
  • Low fluid level
  • Fluid leakage
  • CAC pump or relay failure
  • Crossed CAC coolant lines
Diagnostic Aids:  Monitor the IAT2 PID. A typical IAT2 temperature should be greater than the IAT1 temperature.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All refer to PINPOINT TEST DU .
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