Since the Intake Air Temperature (IAT) Sensor is par of the Mass Air Flow (MAF) Sensor, start by cleaning the MAF. If the problem persists the MAF may need to be replaced.
Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P0127 2002 Nissan Altima Sedan code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
Need more information on how to fix the P0127 2002 Nissan Altima Sedan code? Get Access to Factory Service Manuals
Get the P0127 2002 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area