AutoCodes – Nissan – P0103 2010 Nissan Sentra

P0103 2010 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 2010 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 4,115

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

What does this mean?

What are the Possible Causes of the DTC P0103 2010 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 2010 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 2010 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 2010 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 2010 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0103 on a 2010 Nissan Sentra?

- Common symptoms include rough idling, stalling, poor acceleration, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0103 indicate on a 2010 Nissan Sentra?

- The code P0103 indicates a high input in the mass air flow (MAF) sensor circuit on a 2010 Nissan Sentra.

3. What are the possible causes of OBDII code P0103 on a 2010 Nissan Sentra?

- Possible causes include a faulty MAF sensor, dirty or contaminated MAF sensor, damaged MAF sensor wiring, or a disconnected MAF sensor connector.

4. How can I diagnose the cause of OBDII code P0103 on my 2010 Nissan Sentra?

- You can diagnose the issue by visually inspecting the MAF sensor and its wiring, cleaning the MAF sensor, checking the sensor's voltage output, and using a scan tool to monitor sensor data.

5. Can a dirty air filter trigger OBDII code P0103 on a 2010 Nissan Sentra?

- Yes, a dirty air filter can restrict airflow to the MAF sensor, leading to incorrect readings and potentially triggering code P0103.

6. How do I repair OBDII code P0103 on my 2010 Nissan Sentra?

- To repair code P0103, you may need to replace the MAF sensor, clean or replace the air filter, repair damaged wiring, or reattach any loose connections.

7. Is it safe to drive my 2010 Nissan Sentra with OBDII code P0103 active?

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

8. Can a disconnected or loose MAF sensor connector cause OBDII code P0103 on a 2010 Nissan Sentra?

- Yes, a disconnected or loose MAF sensor connector can disrupt the sensor signal, leading to a high input in the circuit and triggering code P0103.

9. How much does it typically cost to repair OBDII code P0103 on a 2010 Nissan Sentra?

- The cost of repairing code P0103 can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

10. Will resetting the check engine light resolve OBDII code P0103 on my 2010 Nissan Sentra?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing code P0103. It is important to diagnose and repair the root cause of the problem.