AutoCodes – Nissan – P0103 2010 Nissan Pathfinder

P0103 2010 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 2010 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 3,247

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 2010 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 2010 Nissan Pathfinder - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2010 Nissan Pathfinder Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2010 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 2010 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 2010 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 2010 Nissan Pathfinder Code

1. What does the OBDII code P0103 on a 2010 Nissan Pathfinder mean?

The code P0103 indicates a potential issue with the Mass Air Flow (MAF) sensor circuit, specifically a high input signal.

2. What are common symptoms of a P0103 code in a 2010 Nissan Pathfinder?

Common symptoms include rough idle, engine stalling, hesitation or surging during acceleration, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate.

3. What are the possible causes of a P0103 code in a 2010 Nissan Pathfinder?

Potential causes of a P0103 code include a faulty MAF sensor, damaged or dirty MAF sensor, issues with the wiring or connectors in the MAF sensor circuit, vacuum leaks, or a problem with the power supply to the sensor.

4. How can I diagnose the cause of a P0103 code in my 2010 Nissan Pathfinder?

Diagnosing a P0103 code may involve visually inspecting the MAF sensor and its wiring, testing the sensor's voltage output, checking for vacuum leaks, and using a scan tool to monitor sensor data for anomalies.

5. Can a dirty MAF sensor cause a P0103 code in a 2010 Nissan Pathfinder?

Yes, a dirty or contaminated MAF sensor can lead to incorrect readings and trigger a P0103 code. Regularly cleaning or replacing the MAF sensor can help prevent this issue.

6. Are there any DIY repair tips for fixing a P0103 code in a 2010 Nissan Pathfinder?

DIY repair tips may include cleaning the MAF sensor with specialized cleaner, checking and securing the sensor's wiring connections, and ensuring there are no vacuum leaks in the intake system.

7. Is it safe to drive with a P0103 code present in a 2010 Nissan Pathfinder?

It is not recommended to drive with a P0103 code present, as it can lead to poor engine performance and potential damage over time. It's best to address the issue promptly.

8. How much does it typically cost to repair a P0103 code on a 2010 Nissan Pathfinder?

The cost of repairing a P0103 code can vary depending on the cause of the issue. Costs may include the price of a new MAF sensor, labor costs if taking it to a mechanic, and any additional parts or repairs needed.

9. Can a P0103 code be a recurring issue in a 2010 Nissan Pathfinder?

If the root cause of the P0103 code is not properly addressed or if the MAF sensor continues to get dirty or damaged, the code may reappear. Regular maintenance and proper care of the MAF sensor can help prevent recurrence.

10. Will resetting the Check Engine Light resolve a P0103 code in a 2010 Nissan Pathfinder?

Resetting the Check Engine Light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing the P0103 code. It's important to diagnose and repair the root cause of the problem to prevent further issues.