AutoCodes – Nissan – P0103 2010 Nissan Altima Sedan

P0103 2010 Nissan Altima Sedan 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 Altima Sedan 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 3,725

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 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 more than the factory specifications.

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

What does this mean?

What are the Possible Causes of the DTC P0103 2010 Nissan Altima Sedan?

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 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 P0103 2010 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 P0103 2010 Nissan Altima Sedan Code

1. What does the OBDII code P0103 mean for a 2010 Nissan Altima Sedan?

The code P0103 indicates a potential issue with the Mass Air Flow (MAF) Sensor Circuit High Input in your 2010 Nissan Altima Sedan.

2. What are the common symptoms of the P0103 code on a 2010 Nissan Altima Sedan?

Common symptoms of the P0103 code include rough idling, stalling, decreased fuel efficiency, hesitation or lack of power during acceleration, and the illumination of the Check Engine Light.

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

The P0103 code in a 2010 Nissan Altima Sedan can be triggered by a faulty MAF sensor, damaged wiring or connectors in the MAF sensor circuit, a dirty or contaminated MAF sensor, or issues with the air intake system.

4. How can I diagnose the P0103 code on my 2010 Nissan Altima Sedan?

Diagnosing the P0103 code involves inspecting the MAF sensor and its wiring, checking for any signs of damage or contamination, testing the MAF sensor's voltage output, and using a scan tool to monitor MAF sensor data.

5. Can I drive my 2010 Nissan Altima Sedan with the P0103 code?

While it may be possible to drive with the P0103 code, it is not recommended as it can lead to further damage to the engine and decrease in performance. It's best to address the issue promptly.

6. How can I repair the P0103 code on my 2010 Nissan Altima Sedan?

Repairing the P0103 code may involve cleaning or replacing the MAF sensor, repairing damaged wiring or connectors, addressing any air intake system issues, and clearing the trouble codes with a scan tool.

7. Are there any DIY tips for fixing the P0103 code on a 2010 Nissan Altima Sedan?

DIY tips for addressing the P0103 code include checking for loose connections, ensuring the MAF sensor is clean, inspecting the air intake system for leaks, and following the vehicle's service manual for specific repair procedures.

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

The cost of repairing the P0103 code on a 2010 Nissan Altima Sedan can vary depending on the root cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

9. Can a faulty MAF sensor cause other issues besides triggering the P0103 code on a 2010 Nissan Altima Sedan?

Yes, a faulty MAF sensor can cause a variety of issues beyond triggering the P0103 code, including poor engine performance, rough idling, stalling, and decreased fuel efficiency.

10. How often should the MAF sensor be inspected or replaced in a 2010 Nissan Altima Sedan to prevent the P0103 code?

It is recommended to inspect the MAF sensor during routine maintenance checks and replace it as needed if any issues are detected to prevent the occurrence of the P0103 code on a 2010 Nissan Altima Sedan.