AutoCodes – Nissan – P0102 2011 Nissan Altima Sedan

P0102 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan 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 6,867

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 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan - Mass or Volume Air Flow Circuit Low Input - AutoCodes.com — P0102 2011 Nissan Altima Sedan Code - Mass or Volume Air Flow Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0102 2011 Nissan Altima Sedan?

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

How to Fix the DTC P0102 2011 Nissan Altima Sedan?

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 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0102 on a 2011 Nissan Altima Sedan?

- Common symptoms include poor acceleration, rough idling, stalling, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0102 on a 2011 Nissan Altima Sedan?

- The code P0102 typically indicates an issue with the Mass Air Flow (MAF) sensor, including a dirty or faulty sensor, a vacuum leak, or a problem with the wiring or connector.

3. How can I diagnose the cause of OBDII code P0102 on my 2011 Nissan Altima Sedan?

- You can start by inspecting the MAF sensor for dirt or damage, checking for any vacuum leaks, and ensuring the wiring and connector are in good condition. You may also use a scan tool to monitor MAF sensor data.

4. Can a dirty air filter trigger OBDII code P0102 on a 2011 Nissan Altima Sedan?

- Yes, a dirty air filter can restrict airflow to the MAF sensor, leading to incorrect readings and potentially triggering the P0102 code.

5. Is it safe to continue driving with OBDII code P0102 on a 2011 Nissan Altima Sedan?

- It is not recommended to drive with the P0102 code as it can cause poor engine performance and potentially lead to further damage if left unresolved.

6. How can I repair OBDII code P0102 on my 2011 Nissan Altima Sedan?

- Common repairs for P0102 include cleaning or replacing the MAF sensor, fixing any vacuum leaks, replacing the air filter, and checking the wiring and connectors for any issues.

7. Can I reset the OBDII code P0102 on my 2011 Nissan Altima Sedan by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is essential to diagnose and address the underlying issue causing the P0102 code to prevent it from reoccurring.

8. Will a faulty oxygen sensor trigger OBDII code P0102 on a 2011 Nissan Altima Sedan?

- A faulty oxygen sensor is not a common cause of the P0102 code. The issue is typically related to the MAF sensor or its circuit.

9. How much does it cost to repair OBDII code P0102 on a 2011 Nissan Altima Sedan?

- The cost of repairing P0102 can vary depending on the exact cause of the issue. It may range from a simple DIY fix, such as cleaning the MAF sensor, to replacing the sensor or addressing more complex wiring issues.

10. Can a mechanic help me diagnose and repair OBDII code P0102 on my 2011 Nissan Altima Sedan?

- Yes, a qualified mechanic or automotive technician can help diagnose the specific cause of the P0102 code using specialized tools and expertise, and provide the necessary repairs to resolve the issue.