AutoCodes – Nissan – P0102 2012 Nissan Pathfinder

P0102 2012 Nissan Pathfinder Code - Mass or Volume Air Flow Circuit Low Input

Quick Answer

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0102 2012 Nissan Pathfinder indicates Mass or Volume Air Flow Circuit Low Input.
Common causes: Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 6,277

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 18, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0102 2012 Nissan Pathfinder Description

The Mass Air Flow (MAF) sensor is placed in the stream of the 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 ECM controls the temperature of the hot film by 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. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the MAF Sensor Signal is less than the factory specifications.

OBDII Code P0102 2012 Nissan Pathfinder - Mass or Volume Air Flow Circuit Low Input - AutoCodes.com — P0102 2012 Nissan Pathfinder Code - Mass or Volume Air Flow Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0102 2012 Nissan Pathfinder?

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

How to Fix the DTC P0102 2012 Nissan Pathfinder?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0102 2012 Nissan Pathfinder code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0102 2012 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0102 in a 2012 Nissan Pathfinder?

The common symptoms of P0102 include poor acceleration, rough idling, stalling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0102 "Mass or Volume Air Flow Circuit Low Input" mean in a 2012 Nissan Pathfinder?

Code P0102 indicates that the mass air flow (MAF) sensor is detecting a lower-than-expected voltage signal, which could be caused by a problem in the MAF sensor or its circuit.

3. What are the possible causes of OBDII code P0102 in a 2012 Nissan Pathfinder?

Possible causes of P0102 include a faulty MAF sensor, a dirty or contaminated MAF sensor, a vacuum leak, a clogged air filter, a damaged or disconnected MAF sensor wiring, or a problem with the MAF sensor connector.

4. How can I diagnose the OBDII code P0102 in my 2012 Nissan Pathfinder?

To diagnose P0102, you can start by inspecting the MAF sensor and its wiring for any visible damage or contamination. You may also use a multimeter to test the MAF sensor's voltage output and check for any vacuum leaks in the intake system.

5. Can I drive my 2012 Nissan Pathfinder with OBDII code P0102?

It is not recommended to drive your vehicle with an active P0102 code, as it can lead to poor engine performance and potential damage. It's best to address the issue promptly to prevent further problems.

6. How do I repair OBDII code P0102 in a 2012 Nissan Pathfinder?

Repairing P0102 usually involves cleaning or replacing the MAF sensor, checking and repairing any damaged wiring, fixing vacuum leaks, and ensuring the air filter is clean and properly installed.

7. Will resetting the OBDII code P0102 in my 2012 Nissan Pathfinder make it go away permanently?

Simply resetting the code may temporarily turn off the check engine light, but if the underlying issue causing P0102 is not addressed, the code is likely to reappear. It's crucial to diagnose and fix the root cause of the problem.

8. Can a clogged air filter trigger OBDII code P0102 in a 2012 Nissan Pathfinder?

Yes, a clogged air filter can disrupt the airflow entering the engine, affecting the MAF sensor's readings and potentially causing a low input signal error like P0102. Regularly changing the air filter can help prevent this issue.

9. Is it possible for a loose MAF sensor connector to cause OBDII code P0102 in a 2012 Nissan Pathfinder?

Yes, a loose or disconnected MAF sensor connector can disrupt the signal between the sensor and the ECU, leading to a low input error like P0102. Checking and securely reconnecting the sensor's connector can help resolve the issue.

10. How can I prevent OBDII code P0102 from occurring in my 2012 Nissan Pathfinder?

To prevent P0102, maintain regular vehicle maintenance, including cleaning or replacing the air filter as recommended, inspecting the MAF sensor for any contamination, and addressing any issues like vacuum leaks promptly.