AutoCodes – Nissan – P0103 2011 Nissan Sentra

P0103 2011 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 2011 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 4,907

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

What does this mean?

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

Need more information about the P0103 2011 Nissan Sentra code?

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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 Sentra Code

1. What are the common symptoms of OBDII code P0103 in a 2011 Nissan Sentra?

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

2. What does the OBDII code P0103 on a 2011 Nissan Sentra indicate?

- The code P0103 signifies a high input from the mass air flow (MAF) sensor circuit in the vehicle's engine.

3. What are the possible causes of OBDII code P0103 in a 2011 Nissan Sentra?

- Potential causes include a faulty MAF sensor, damaged wiring or connectors in the MAF circuit, a dirty or contaminated MAF sensor, or a vacuum leak near the sensor.

4. How can I diagnose the OBDII code P0103 in my 2011 Nissan Sentra?

- Diagnose the code by visually inspecting the MAF sensor and its connections, testing the sensor's voltage, checking for any vacuum leaks, and using a scan tool to monitor live data from the MAF sensor.

5. Can a dirty air filter trigger the OBDII code P0103 in a 2011 Nissan Sentra?

- Yes, a dirty air filter can disrupt the airflow readings received by the MAF sensor, potentially causing the sensor to register a high input and trigger the P0103 code.

6. How can I repair the OBDII code P0103 in my 2011 Nissan Sentra?

- Repair options may include cleaning or replacing the MAF sensor, repairing any damaged wiring or connectors, fixing any vacuum leaks, and ensuring the air filter is clean.

7. Is it safe to drive my 2011 Nissan Sentra with the OBDII code P0103 active?

- It is generally not recommended to drive with the P0103 code active, as it can lead to engine performance issues and potential damage if left unresolved.

8. Can a DIY enthusiast fix the OBDII code P0103 in a 2011 Nissan Sentra?

- Depending on the underlying cause, a DIY enthusiast with the necessary tools and knowledge may be able to address the P0103 code by cleaning the MAF sensor, checking connections, or replacing components if needed.

9. Are there any recalls or technical service bulletins related to OBDII code P0103 in a 2011 Nissan Sentra?

- It is advisable to check with Nissan or consult online resources for any recalls or technical service bulletins specific to the P0103 code in the 2011 Nissan Sentra.

10. What is the typical cost to repair OBDII code P0103 in a 2011 Nissan Sentra at a dealership or auto repair shop?

- The cost of repairing the P0103 code can vary depending on the exact cause and the labor rates of the dealership or auto repair shop, but it may range from $100 to $300 or more.