P0127 - Intake Air Temperature Too High
Intake Air Temperature is monitored to allow the ECM to accurately adjust fueling and emission control systems as the temperature directly affects the air density
Fault Code Explained
The ECM has detected a reading from the sensor that indicates a temperature that is higher than expected when compared to other sensor values. The sensor output is likely to be within it’s normal operating parameters.
If possible use a diagnostic computer to view live data from the sensor and compare this to actual air temperature.
- Check sensor supply Voltage
- Test sensor resistance and compare to manufacturers specification