P0127: Intake Air Temperature Too High
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0127 - INTAKE AIR TEMPERATURE TOO HIGH
| Description: | Indicates that the IAT2 sensor has detected a potential abnormality in the intercooler system. This condition will cause the boost from the supercharger to be bypassed to avoid potential engine damage. | ||
| Possible Causes: |
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| Diagnostic Aids: | Monitor IAT2 PID. Typical IAT2 temperature should be greater than IAT1. REFER to REFERENCE VALUES - CNG, FLEX-FUEL & GASOLINE . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DU: INTAKE AIR TEMPERATURE 2 SENSOR Step 7. | ||