AutoCodesNissan – P0103 2011 Nissan Altima Sedan

P0103 2011 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 2011 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 5,094
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 18, 2022
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Code P0103 2011 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 2011 Nissan Altima Sedan - Mass Air Flow Sensor Circuit High Input - AutoCodes.com
P0103 2011 Nissan Altima Sedan Code - Mass Air Flow Sensor Circuit High Input

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

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0103 2011 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 2011 Nissan Altima Sedan Code

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

The common symptoms of code P0103 (Mass Air Flow Sensor Circuit High Input) in a 2011 Nissan Altima Sedan may include engine stalling, rough idling, poor acceleration, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0103 in a 2011 Nissan Altima Sedan?

The possible causes of code P0103 in a 2011 Nissan Altima Sedan include a faulty mass air flow sensor, a dirty or contaminated air filter, a vacuum leak, or issues with the wiring or connectors related to the mass air flow sensor.

3. How can I diagnose OBDII code P0103 in my 2011 Nissan Altima Sedan?

To diagnose code P0103 in a 2011 Nissan Altima Sedan, you can start by visually inspecting the mass air flow sensor and its connections. You can also use a scan tool to monitor the sensor's readings and check for any irregularities.

4. Can I drive my 2011 Nissan Altima Sedan with OBDII code P0103?

It is not recommended to drive your 2011 Nissan Altima Sedan with code P0103 (Mass Air Flow Sensor Circuit High Input) as it can lead to further engine performance issues and potential damage. It's best to address the problem promptly.

5. How do I repair OBDII code P0103 in my 2011 Nissan Altima Sedan?

To repair code P0103 in a 2011 Nissan Altima Sedan, you may need to replace the mass air flow sensor if it's found to be faulty. Additionally, cleaning or replacing the air filter and checking for any vacuum leaks can help resolve the issue.

6. Can a dirty air filter cause OBDII code P0103 in a 2011 Nissan Altima Sedan?

Yes, a dirty or contaminated air filter can restrict airflow to the mass air flow sensor, leading to incorrect readings and triggering code P0103 in a 2011 Nissan Altima Sedan.

7. How much does it cost to replace the mass air flow sensor in a 2011 Nissan Altima Sedan?

The cost of replacing the mass air flow sensor in a 2011 Nissan Altima Sedan can vary depending on the brand, quality, and labor charges, but it typically ranges from $100 to $300.

8. Will resetting the OBDII code P0103 in my 2011 Nissan Altima Sedan make it go away permanently?

Resetting the OBDII code P0103 in a 2011 Nissan Altima Sedan may temporarily clear the code, but if the underlying issue such as a faulty mass air flow sensor or wiring problem is not addressed, the code is likely to return.

9. Is it possible to clean the mass air flow sensor to fix OBDII code P0103 in a 2011 Nissan Altima Sedan?

Cleaning the mass air flow sensor may sometimes resolve code P0103 in a 2011 Nissan Altima Sedan if the issue is caused by dirt or debris affecting its performance. However, if the sensor is faulty, replacement may be necessary.

10. How long does it take to repair OBDII code P0103 in a 2011 Nissan Altima Sedan?

The time it takes to repair code P0103 in a 2011 Nissan Altima Sedan can vary depending on the exact cause of the issue and the repair process involved. In general, it can take anywhere from 30 minutes to a few hours to complete the repair.

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