AutoCodes – Nissan – P0103 2008 Nissan Maxima

P0103 2008 Nissan Maxima 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 2008 Nissan Maxima 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 5,163
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 2008 Nissan Maxima 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 2008 Nissan Maxima - Mass Air Flow Sensor Circuit High Input - AutoCodes.com
P0103 2008 Nissan Maxima Code - Mass Air Flow Sensor Circuit High Input

What are the Possible Causes of the DTC P0103 2008 Nissan Maxima?

  • 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 2008 Nissan Maxima?

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 2008 Nissan Maxima 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 2008 Nissan Maxima 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 2008 Nissan Maxima Code

1. What are common symptoms of OBDII code P0103 on a 2008 Nissan Maxima?

- Common symptoms include rough idling, engine stalling, decreased fuel efficiency, and potential loss of power.

2. What does the OBDII code P0103 on a 2008 Nissan Maxima indicate?

- The code P0103 indicates a high input signal from the Mass Air Flow (MAF) sensor circuit.

3. What are the possible causes of OBDII code P0103 on a 2008 Nissan Maxima?

- Possible causes include a faulty MAF sensor, damaged wiring or connectors in the MAF circuit, or a dirty/clogged MAF sensor.

4. How can I diagnose the source of OBDII code P0103 on my 2008 Nissan Maxima?

- Start by inspecting the MAF sensor and its wiring for any visible damage. You can also use a multimeter to test the sensor's voltage and resistance.

5. Can a dirty MAF sensor cause OBDII code P0103 on a 2008 Nissan Maxima?

- Yes, a dirty or clogged MAF sensor can disrupt the sensor's operation and trigger a high input signal, leading to code P0103.

6. How can I clean a MAF sensor to potentially resolve OBDII code P0103 on a 2008 Nissan Maxima?

- Use a specialized MAF sensor cleaner spray to carefully clean the sensor's delicate components, following the manufacturer's instructions.

7. Is it safe to drive my 2008 Nissan Maxima with OBDII code P0103 active?

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

8. Will resetting the OBDII code P0103 on a 2008 Nissan Maxima make it go away permanently?

- Resetting the code may temporarily clear it, but if the underlying issue, such as a faulty MAF sensor, is not addressed, the code is likely to return.

9. How much does it typically cost to repair OBDII code P0103 on a 2008 Nissan Maxima?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from around $100 for a DIY fix to a few hundred dollars at a repair shop.

10. Can a mechanic help me diagnose and repair OBDII code P0103 on my 2008 Nissan Maxima?

- Yes, a qualified mechanic can perform a thorough diagnostic to pinpoint the issue and provide the necessary repairs to resolve code P0103.

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