AutoCodes – Infiniti – P0102 Infiniti

P0102 Infiniti 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 Infiniti 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 29,181

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 Infiniti 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 Infiniti - Mass or Volume Air Flow Circuit Low Input - AutoCodes.com — P0102 Infiniti Code - Mass or Volume Air Flow Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0102 Infiniti?

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 Infiniti?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0102 Infiniti 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.

Need more information about the P0102 Infiniti code?

Need more information on how to fix the P0102 Infiniti code? Get Access to Factory Service Manuals

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Information for Specific Infiniti Models

P0102 2003 Infiniti G35 — Mass or Volume Air Flow Circuit Low Input
P0102 2004 Infiniti G35 — Mass or Volume Air Flow Circuit Low Input
P0102 2005 Infiniti G35 — Mass or Volume Air Flow Circuit Low Input
P0102 2006 Infiniti G35 — Mass or Volume Air Flow Circuit Low Input

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 Infiniti Code

1. What are the common symptoms of OBDII code P0102 in an Infiniti?

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

2. What does the OBDII code P0102 in an Infiniti indicate?

- The code P0102 indicates that the Mass Air Flow (MAF) sensor is reporting a low input signal to the Engine Control Module (ECM).

3. What are the possible causes of OBDII code P0102 in an Infiniti?

- Possible causes include a faulty MAF sensor, damaged wiring or connectors in the MAF circuit, intake air leaks, or a clogged air filter.

4. How can I diagnose the cause of OBDII code P0102 in my Infiniti?

- You can diagnose the issue by inspecting the MAF sensor for any damage, checking the wiring and connectors for any signs of wear, testing for intake air leaks, and inspecting the air filter.

5. Can a dirty air filter trigger OBDII code P0102 in an Infiniti?

- Yes, a dirty or clogged air filter can disrupt the airflow to the MAF sensor, causing it to report a low input signal and trigger code P0102.

6. How can I repair OBDII code P0102 in my Infiniti?

- Repair options include cleaning or replacing the MAF sensor, repairing any damaged wiring or connectors, fixing any intake air leaks, and replacing the air filter if necessary.

7. Is it safe to continue driving with OBDII code P0102 in my Infiniti?

- It is not recommended to drive with the code P0102 as it can lead to further engine damage and decreased performance over time.

8. Can a malfunctioning MAF sensor cause other issues besides triggering code P0102 in an Infiniti?

- Yes, a malfunctioning MAF sensor can also cause issues like erratic idling, poor acceleration, and increased emissions.

9. How much does it typically cost to fix OBDII code P0102 in an Infiniti?

- The cost of fixing code P0102 can vary depending on the exact cause and the repair needed, but it generally ranges from $100 to $500 for parts and labor.

10. Will resetting the OBDII code P0102 in my Infiniti make the issue disappear?

- Resetting the code may temporarily clear the warning light, but the underlying issue causing code P0102 will still need to be addressed to prevent it from reoccurring.