AutoCodes – Nissan – P0103 2007 Nissan Sentra

P0103 2007 Nissan Sentra 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 2007 Nissan Sentra 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 3,981

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 2007 Nissan Sentra 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 2007 Nissan Sentra - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2007 Nissan Sentra Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2007 Nissan Sentra?

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 2007 Nissan Sentra?

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 2007 Nissan Sentra 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 2007 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0103 on a 2007 Nissan Sentra?

The common symptoms include poor engine performance, rough idling, hesitation during acceleration, stalling, and in some cases, the Check Engine Light may illuminate.

2. What does the OBDII code P0103 on a 2007 Nissan Sentra indicate?

Code P0103 indicates a high input signal from the Mass Air Flow (MAF) sensor circuit. This means the MAF sensor is detecting more air entering the engine than expected.

3. What are the potential causes of OBDII code P0103 on a 2007 Nissan Sentra?

The potential causes include a faulty MAF sensor, a dirty or contaminated MAF sensor, a vacuum leak, a clogged air filter, issues with the wiring or connectors related to the MAF sensor, or a problem with the engine's air intake system.

4. How can I diagnose the OBDII code P0103 on a 2007 Nissan Sentra?

Diagnosing this code typically involves inspecting the MAF sensor, checking for any visible damage or contamination, testing the sensor's output using a multimeter, inspecting the air intake system for leaks, and checking the wiring and connectors for any damage or corrosion.

5. Is it safe to continue driving my 2007 Nissan Sentra with OBDII code P0103?

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

6. Can I clean the MAF sensor to resolve OBDII code P0103 on a 2007 Nissan Sentra?

Cleaning the MAF sensor is a common maintenance step that may help resolve the issue if the sensor is dirty or contaminated. However, if the sensor is faulty, cleaning may not be sufficient, and a replacement might be necessary.

7. How much does it cost to repair OBDII code P0103 on a 2007 Nissan Sentra?

The cost of repairing code P0103 can vary depending on the underlying cause. Cleaning a MAF sensor or replacing an air filter can be relatively inexpensive, while replacing a faulty MAF sensor or addressing wiring issues may cost more.

8. Can a DIY enthusiast fix OBDII code P0103 on a 2007 Nissan Sentra?

Some aspects of diagnosing and repairing code P0103 can be tackled by a DIY enthusiast with the necessary tools and knowledge. However, if the issue is complex or requires specialized equipment, seeking professional help is recommended.

9. How long does it take to repair OBDII code P0103 on a 2007 Nissan Sentra?

The repair time for code P0103 can vary based on the specific cause and the extent of the issue. Simple fixes like cleaning the MAF sensor can be done quickly, while more complex repairs may take longer and require professional assistance.

10. Will resetting the Check Engine Light resolve OBDII code P0103 on a 2007 Nissan Sentra?

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