AutoCodes – Nissan – P0103 2012 Nissan Sentra

P0103 2012 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 2012 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 4,782

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 2012 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 2012 Nissan Sentra - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2012 Nissan Sentra Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2012 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 2012 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 2012 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 2012 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 2012 Nissan Sentra Code

1. What are common symptoms of OBDII code P0103 in a 2012 Nissan Sentra?

The common symptoms of OBDII code P0103 (Mass Air Flow Sensor Circuit High Input) in a 2012 Nissan Sentra include rough idle, stalling, poor fuel economy, and a Check Engine Light.

2. What does the OBDII code P0103 indicate in a 2012 Nissan Sentra?

OBDII code P0103 in a 2012 Nissan Sentra indicates an issue with the Mass Air Flow (MAF) sensor circuit registering a high input.

3. What are possible causes of OBDII code P0103 in a 2012 Nissan Sentra?

Possible causes of OBDII code P0103 in a 2012 Nissan Sentra include a faulty MAF sensor, damaged wiring or connectors in the MAF sensor circuit, or a clogged air filter.

4. How can I diagnose the OBDII code P0103 in my 2012 Nissan Sentra?

To diagnose OBDII code P0103 in a 2012 Nissan Sentra, you can use an OBDII scanner to read the code and check the MAF sensor, wiring, and connectors for any visible damage or issues.

5. Can I drive my 2012 Nissan Sentra with OBDII code P0103?

While it is possible to drive a 2012 Nissan Sentra with OBDII code P0103, continued driving with this issue may result in poor engine performance and reduced fuel efficiency. It's recommended to address the problem as soon as possible.

6. How can I repair OBDII code P0103 in my 2012 Nissan Sentra?

To repair OBDII code P0103 in a 2012 Nissan Sentra, you may need to replace the MAF sensor if it's faulty, repair any damaged wiring or connectors in the MAF sensor circuit, and ensure the air filter is clean and not clogged.

7. Are there any DIY tips for fixing OBDII code P0103 in a 2012 Nissan Sentra?

If you're experienced with automotive repairs, you may attempt to clean the MAF sensor using MAF sensor cleaner before considering a replacement. However, it's always best to consult a professional if you're unsure.

8. How much does it cost to fix OBDII code P0103 in a 2012 Nissan Sentra?

The cost to fix OBDII code P0103 in a 2012 Nissan Sentra can vary depending on the root cause of the issue. Replacing a MAF sensor or repairing wiring may cost between $100 to $300, including parts and labor.

9. Will resetting the OBDII code P0103 in my 2012 Nissan Sentra make it go away permanently?

Resetting the OBDII code P0103 in a 2012 Nissan Sentra may temporarily turn off the Check Engine Light, but if the underlying issue causing the code is not addressed, the code is likely to return.

10. How often does OBDII code P0103 occur in a 2012 Nissan Sentra?

OBDII code P0103 (Mass Air Flow Sensor Circuit High Input) can occur sporadically in a 2012 Nissan Sentra due to various factors like sensor wear, poor maintenance, or environmental conditions affecting the sensor's performance.