AutoCodes – Nissan – P0103 2011 Nissan Pathfinder

P0103 2011 Nissan Pathfinder Code - Mass Air Flow Sensor Circuit High 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: P0103 2011 Nissan Pathfinder indicates Mass Air Flow Sensor Circuit High 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 3,449

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 P0103 2011 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 more than the factory specifications.

OBDII Code P0103 2011 Nissan Pathfinder - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2011 Nissan Pathfinder Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2011 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 P0103 2011 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0103 2011 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 P0103 2011 Nissan Pathfinder Code

1. What does the OBDII code P0103 on a 2011 Nissan Pathfinder mean?

The code P0103 indicates a problem with the Mass Air Flow (MAF) Sensor Circuit High Input in your vehicle.

2. What are the common symptoms of a P0103 code on a 2011 Nissan Pathfinder?

Common symptoms include engine stalling, rough idling, hesitation during acceleration, reduced fuel efficiency, and the illumination of the Check Engine Light.

3. What are the possible causes of a P0103 code on a 2011 Nissan Pathfinder?

Potential causes include a dirty or faulty MAF sensor, damaged MAF wiring, a vacuum leak, a clogged air filter, or issues with the intake system.

4. How can I diagnose a P0103 code on my 2011 Nissan Pathfinder?

You can diagnose a P0103 code by checking the MAF sensor for dirt or damage, inspecting the wiring for any breaks or corrosion, and testing for vacuum leaks in the intake system.

5. Can I drive my 2011 Nissan Pathfinder with a P0103 code?

It is not recommended to drive your vehicle with a P0103 code as it can lead to poor engine performance and potential further damage if left unresolved.

6. How do I repair a P0103 code on my 2011 Nissan Pathfinder?

To repair a P0103 code, you may need to clean or replace the MAF sensor, repair any damaged wiring, fix vacuum leaks, replace the air filter, or seek professional help for a thorough diagnosis and repair.

7. Will resetting the OBDII system clear a P0103 code on my 2011 Nissan Pathfinder?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after some driving cycles.

8. How much does it cost to fix a P0103 code on a 2011 Nissan Pathfinder?

The cost of fixing a P0103 code can vary depending on the exact cause of the issue. It could range from a simple DIY fix to a more extensive repair that may require professional assistance.

9. Can a P0103 code on a 2011 Nissan Pathfinder cause other problems if not fixed?

Yes, if left unresolved, a P0103 code can lead to reduced engine performance, increased fuel consumption, and potential damage to other components in the vehicle's engine system.

10. How often does a P0103 code occur in a 2011 Nissan Pathfinder?

The occurrence of a P0103 code can vary based on factors like vehicle usage, maintenance history, and driving conditions. Regular maintenance and prompt attention to warning lights can help prevent such issues.