AutoCodes – Nissan – P0103 2005 Nissan Sentra

P0103 2005 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 2005 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,455

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0103 2005 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 2005 Nissan Sentra - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2005 Nissan Sentra Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2005 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 2005 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 2005 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 2005 Nissan Sentra code?

Need more information on how to fix the P0103 2005 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0103 2005 Nissan Sentra code diagnosed by a professional: Find a repair shop in your area

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 2005 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0103 on a 2005 Nissan Sentra?

The common symptoms of P0103 on a 2005 Nissan Sentra include poor engine performance, hesitation during acceleration, stalling, and an illuminated check engine light.

2. What does OBDII code P0103 mean for a 2005 Nissan Sentra?

P0103 indicates a high input signal from the mass air flow (MAF) sensor circuit on a 2005 Nissan Sentra, suggesting a potential issue with the MAF sensor or its wiring.

3. What are the possible causes of OBDII code P0103 on a 2005 Nissan Sentra?

Potential causes of P0103 on a 2005 Nissan Sentra include a faulty MAF sensor, dirty or contaminated MAF sensor, damaged MAF sensor wiring, or a vacuum leak in the intake system.

4. How can I diagnose the cause of OBDII code P0103 on my 2005 Nissan Sentra?

To diagnose P0103, you can start by visually inspecting the MAF sensor and its wiring for any damage. You can also use a multimeter to test the sensor's voltage and resistance, or perform a smoke test to check for vacuum leaks.

5. Can I drive my 2005 Nissan Sentra with OBDII code P0103?

It is not recommended to drive your 2005 Nissan Sentra with P0103, as it can lead to poor engine performance and potential damage to other components. It's best to address the issue as soon as possible.

6. How can I repair OBDII code P0103 on my 2005 Nissan Sentra?

Depending on the cause, repairing P0103 may involve cleaning or replacing the MAF sensor, repairing damaged wiring, fixing vacuum leaks, or resetting the error code with a diagnostic tool.

7. Is it possible to reset OBDII code P0103 on a 2005 Nissan Sentra?

You can reset P0103 using an OBDII scanner or disconnecting the car battery for a few minutes. However, the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

8. Will cleaning the MAF sensor fix OBDII code P0103 on a 2005 Nissan Sentra?

Cleaning the MAF sensor is a common first step in resolving P0103, especially if it is dirty or contaminated. However, if the sensor is faulty, cleaning may not fully resolve the issue.

9. Can a bad MAF sensor cause other problems besides OBDII code P0103 on a 2005 Nissan Sentra?

Yes, a faulty MAF sensor can cause other issues such as poor fuel economy, rough idling, and difficulties starting the engine on a 2005 Nissan Sentra.

10. How much does it cost to repair OBDII code P0103 on a 2005 Nissan Sentra?

The cost of repairing P0103 on a 2005 Nissan Sentra can vary depending on the cause and whether you do the repair yourself or take it to a mechanic. Costs may range from $50 for DIY fixes to a few hundred dollars for professional repairs.