AutoCodes – Infiniti – P1102 Infiniti

P1102 Infiniti Code - Mass Air Flow Sensor Circuit Range/Performance

Quick Answer

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. Common causes include Faulty Mass Air Flow (MAF) Sensor, Dirty Mass Air Flow Sensor, Dirty Air Filter. 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: P1102 Infiniti indicates Mass Air Flow Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Mass Air Flow (MAF) Sensor, Dirty Mass Air Flow Sensor, Dirty Air Filter.
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 7,920

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 Nov 20, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1102 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 temperature of the hot film is controlled by the ECM 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 a lower than expected voltage from the MAF sensor.

OBDII Code P1102 Infiniti - Mass Air Flow Sensor Circuit Range/Performance - AutoCodes.com — P1102 Infiniti Code - Mass Air Flow Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P1102 Infiniti?

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

How to Fix the DTC P1102 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 the code and drive the vehicle. If the code comes back, it may be necessary to replace the Mass Air Flow Sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1102 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 P1102 Infiniti code?

Need more information on how to fix the P1102 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Infiniti Models

P1102 2003 Infiniti G35 — Mass Air Flow Sensor Circuit Range/Performance

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 P1102 Infiniti Code

What does OBDII code P1102 mean for an Infiniti?

P1102 indicates that the Mass Air Flow (MAF) sensor is not performing within the expected range, which can affect engine performance and fuel efficiency.

What are the common symptoms of code P1102 in an Infiniti?

Symptoms may include reduced engine power, poor fuel economy, rough idling, hesitation during acceleration, and the Check Engine Light turning on.

What causes the P1102 code in an Infiniti?

Common causes include a dirty or faulty MAF sensor, air intake leaks, a clogged air filter, damaged wiring or connections, or a malfunctioning Powertrain Control Module (PCM).

Can a dirty air filter trigger the P1102 code?

Yes, a clogged or excessively dirty air filter can restrict airflow to the MAF sensor, causing it to operate outside its expected range and trigger the code.

How can I diagnose the P1102 code on my Infiniti?

Start by inspecting the MAF sensor and air intake system for dirt, damage, or leaks. Use an OBDII scanner to check live data from the MAF sensor and compare it to manufacturer specifications.

Can I fix the P1102 code myself?

You can attempt basic fixes, such as cleaning the MAF sensor with MAF cleaner, replacing a dirty air filter, or checking for loose or damaged wiring. For more complex issues, professional diagnosis may be needed.

Is it safe to drive with the P1102 code active?

Driving with the P1102 code may be possible, but it can lead to reduced performance, decreased fuel efficiency, and potential long-term damage to the engine if not addressed.

How much does it cost to fix the P1102 code on an Infiniti?

Repair costs vary depending on the issue. Cleaning the MAF sensor or replacing the air filter may cost under $50, while MAF sensor replacement can range from $150 to $400, plus labor.

Can a vacuum leak cause the P1102 code?

Yes, a vacuum leak can disrupt the airflow readings of the MAF sensor, leading to inaccurate data and triggering the P1102 code.

How can I prevent the P1102 code from occurring?

Regular maintenance, such as cleaning or replacing the air filter, inspecting the air intake system, and ensuring the MAF sensor stays clean, can help prevent this code from appearing.