AutoCodes – Nissan – P0102 2008 Nissan Altima Sedan

P0102 2008 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 2008 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 5,633

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 2008 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 2008 Nissan Altima Sedan - Mass or Volume Air Flow Circuit Low Input - AutoCodes.com — P0102 2008 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 2008 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 2008 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 2008 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 2008 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0102 on a 2008 Nissan Altima Sedan?

- Common symptoms include poor engine performance, reduced fuel efficiency, hesitation or stalling when accelerating, and illuminated Check Engine Light.

2. What are the potential causes of OBDII code P0102 on a 2008 Nissan Altima Sedan?

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

3. How can I diagnose the Mass Air Flow (MAF) sensor for a P0102 code on a 2008 Nissan Altima Sedan?

- You can visually inspect the MAF sensor for dirt or debris, test the sensor using a multimeter, check for any vacuum leaks, and inspect the wiring and connectors for any damage.

4. Can a dirty air filter cause OBDII code P0102 on a 2008 Nissan Altima Sedan?

- Yes, a dirty air filter can restrict airflow to the MAF sensor, leading to incorrect readings and triggering code P0102. It is recommended to check and replace the air filter if needed.

5. How do I repair OBDII code P0102 on a 2008 Nissan Altima Sedan?

- To repair code P0102, you may need to clean or replace the MAF sensor, fix any vacuum leaks, repair damaged wiring or connectors, and reset the fault code using an OBDII scanner.

6. Can driving with a P0102 code on a 2008 Nissan Altima Sedan cause further damage?

- Driving with a P0102 code may lead to poor engine performance, reduced fuel efficiency, and potential damage to other engine components over time. It is recommended to address the issue promptly.

7. Will disconnecting the battery reset the P0102 code on a 2008 Nissan Altima Sedan?

- Disconnecting the battery may temporarily clear the code, but it is not a permanent solution. The underlying issue causing the P0102 code needs to be diagnosed and repaired to prevent the code from reoccurring.

8. How much does it cost to repair OBDII code P0102 on a 2008 Nissan Altima Sedan?

- The cost of repairing a P0102 code can vary depending on the root cause of the issue. Costs may include the price of a new MAF sensor, replacement parts for vacuum leaks, or labor charges if professional help is needed.

9. Can I drive my 2008 Nissan Altima Sedan with a P0102 code?

- While it is possible to drive with a P0102 code, it is not recommended as it can lead to poor engine performance and potential damage. It is best to address the issue promptly to avoid further complications.

10. How often should the Mass Air Flow (MAF) sensor be replaced on a 2008 Nissan Altima Sedan to prevent code P0102?

- The MAF sensor on a 2008 Nissan Altima Sedan typically does not need regular replacement unless it becomes dirty or faulty. Regular maintenance and cleaning can help prevent issues that trigger code P0102.