AutoCodes – Nissan – P0103 2006 Nissan Altima Sedan

P0103 2006 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 2006 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 4,191

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 2006 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 2006 Nissan Altima Sedan - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2006 Nissan Altima Sedan Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2006 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 2006 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.

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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0103 2006 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 2006 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0103 on a 2006 Nissan Altima Sedan?

- Common symptoms include a check engine light, rough idling, stalling, decreased fuel efficiency, and acceleration issues.

2. What does OBDII code P0103 indicate on a 2006 Nissan Altima Sedan?

- The code P0103 indicates a high input in the mass air flow sensor circuit, meaning the sensor is detecting more air entering the engine than expected.

3. What are the possible causes of OBDII code P0103 on a 2006 Nissan Altima Sedan?

- Possible causes include a faulty mass air flow sensor, a dirty or contaminated sensor, a vacuum leak, wiring issues, or a problem with the sensor connector.

4. How can I diagnose the cause of OBDII code P0103 on my 2006 Nissan Altima Sedan?

- To diagnose the issue, you can visually inspect the mass air flow sensor, check for any visible damage or contamination, test the sensor with a multimeter, and inspect the wiring and connector for any signs of damage.

5. Can I drive my 2006 Nissan Altima Sedan with OBDII code P0103?

- It is not recommended to drive your vehicle with code P0103 as it can lead to poor engine performance and potential damage. It's best to address the issue promptly.

6. How can I repair OBDII code P0103 on a 2006 Nissan Altima Sedan?

- Repair options include cleaning or replacing the mass air flow sensor, fixing any vacuum leaks, repairing damaged wiring, or replacing the sensor connector if necessary.

7. Will resetting the OBDII code P0103 on my 2006 Nissan Altima Sedan make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not fixed, the code is likely to return. It's important to diagnose and repair the root cause.

8. Is it possible to clean the mass air flow sensor to fix OBDII code P0103 on a 2006 Nissan Altima Sedan?

- Yes, cleaning the mass air flow sensor may help if the issue is caused by dirt or debris. Use a specialized cleaner and follow the manufacturer's instructions.

9. How much does it cost to replace a mass air flow sensor for OBDII code P0103 on a 2006 Nissan Altima Sedan?

- The cost of replacing a mass air flow sensor can vary depending on the brand, quality, and labor costs. It's recommended to get quotes from different shops for an accurate estimate.

10. Can a DIY enthusiast repair OBDII code P0103 on a 2006 Nissan Altima Sedan?

- Depending on their skill level and tools available, a DIY enthusiast may be able to clean or replace the mass air flow sensor themselves. However, more complex issues may require professional help.