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DTC - Diagnostic Trouble Codes information

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.