P0127
Powertrain Codes
P0127 - INFINITI - Intake Air Temperature Too High
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Intake air temperature sensor harness is open or shorted
- Intake air temperature sensor electrical circuit poor connection
- Faulty Intake air temperature sensor
Description
The intake air temperature sensor is built into mass air flow sensor. The sensor detects intake air temperature and transmits a signal to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise.