Engine-Codes - Nissan - P0101 2005 NISSAN ALTIMA SEDAN

P0101 2005 NISSAN ALTIMA SEDAN - Mass Air Flow Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P0101 2005 NISSAN ALTIMA SEDAN Possible Causes

  • Dirty Mass Air Flow (MAF) sensor
  • Dirty air filter
  • Faulty Mass Air Flow (MAF) sensor
  • MAF sensor harness is open or shorted
  • MAF sensor circuit poor electrical connection
  • Intake air leaks

How is the P0101 2005 NISSAN ALTIMA SEDAN code repair?

Start by checking 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.

Tech Notes

Before replacing the Mass Air Flow (MAF) sensor, try replacing the air filter and cleaning the MAF sensor with low compress air or MAF sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replace the MAF sensor.

What is the cost to diagnose the P0101 2005 NISSAN ALTIMA SEDAN code

Labor: 1.0

The cost to diagnose the P0101 2005 NISSAN ALTIMA SEDAN code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

- A high voltage from the sensor is sent to Engine Control Module (ECM) under light load driving condition.
- A low voltage from the sensor is sent to ECM

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine stall
  • Engine running rough
  • Excessive fuel consumption
  • Excessive smoke

P0101 2005 NISSAN ALTIMA SEDAN Meaning

The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).
The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.

*Sensor design may vary for your model and year

More Information

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