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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1140 (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 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. 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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