P0127

DTC P0127, sometimes indicated as P012700 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing intake air temperature too high.

One potential cause of this code is a leak in the intake system. This can allow air to enter the system that is warmer than the air that is normally drawn in. This can cause the engine to run too hot and trigger the code.
A blocked air filter can also cause the code to be triggered. This can happen if the filter becomes clogged with dirt or other debris.
Another possible cause is a defective coolant temperature sensor. If this sensor is not working correctly, it can cause the code to be triggered.

• P0127: Intake Air Temperature Too High
• P0127: IAT Sensor Too High
• P0127: Intake air temperature too high
• P0127 00: Intake air temperature too high