AutoCodes - Nissan - P0127 2009 NISSAN SENTRA

P0127 2009 NISSAN SENTRA Code - Intake Air Temperature Too High

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3
Table of contents

|P0127 2009 NISSAN SENTRA code possible causes

  • Faulty Intake Air Temperature (IAT) sensor
  • Intake Air Temperature (IAT) sensor harness is open or shorted
  • Intake Air Temperature (IAT) sensor electrical circuit poor connection

|How do I fix the P0127 2009 NISSAN SENTRA code?

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's pins.

|P0127 2009 NISSAN SENTRA code tech notes

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compressed air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replace the mass air flow sensor.

|Cost of diagnosing the P0127 2009 NISSAN SENTRA code

Labor: 1.0

The cost of diagnosing the P0127 2009 NISSAN SENTRA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0127 2009 NISSAN SENTRA code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|P0127 2009 NISSAN SENTRA code description

The Intake Air Temperature (IAT) sensor is variable temperature sensitive resistor that measures the temperature of the air in the intake system. Sensor resistance will change based on air temperature. The higher the temperature is, the lower the resistance. The Engine Control Module (ECM) provides a reference voltage and monitors the voltage drop between a fixed value internal resistance and the sensor resistance. This is called a voltage divider circuit.
IAT sensor values are used by the ECM processor to assist with the calculation of idle speed, fuel mixture and spark advance.
Inaccurate voltages from the IAT sensor may affect pulse-width, idle quality, and tail pipe emissions. Intermittent signals may cause hesitation, stumble and surging. If an IAT sensor failure accompanies an Engine Coolant Temperature (ECT) sensor failure, cooling fan operation may also be affected.
Some manufacturers incorporate the Intake Air Temperature (IAT) sensor as part of the Mass Air Flow (MAF) sensor (Air Flow Meter).
OBDII Code P0127 2009 Nissan Sentra - Intake Air Temperature Too High -

|Need more information with the P0127 2009 NISSAN SENTRA code?

Need more information on how to fix the P0127 2009 NISSAN SENTRA code? Get Access to Factory Service Manuals

|Need help with a P0127 2009 NISSAN SENTRA code?

Get the P0127 2009 Nissan Sentra code diagnosed by a professional: Find a repair shop in your area

|P0127 2009 NISSAN SENTRA code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0127 2009 Nissan Sentra code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧
Repair Importance Level: 3
1=Low 2=Medium 3=High What is this?
Repair Difficulty Level: 2
1=Easy 2=Moderate 3=Hard What is this?