P0127 – Intake Air Temperature Too High
Indicates that 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.
●● Blockage of heat
● Low fluid level
● Fluid leakage
● Intercooler pump or relay failure
● Crossed intercooler coolant lines
Monitor IAT2 PID. Typical
IAT2 temperature should be greater than IAT1. Refer to Section 6 , Reference Values for ranges.