AutoCodes – Mitsubishi – P0103 Mitsubishi

P0103 Mitsubishi 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 Mitsubishi 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 18,439

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 19, 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 Mitsubishi 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 Mitsubishi - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 Mitsubishi Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 Mitsubishi?

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 Mitsubishi?

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 Mitsubishi 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 Mitsubishi 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 Mitsubishi Code

1. What are common symptoms of OBDII code P0103 in a Mitsubishi related to the Mass Air Flow Sensor Circuit High Input?

- Common symptoms include rough idling, engine stalling, hesitation during acceleration, and a decrease in fuel efficiency.

2. What are some possible causes of the P0103 code in a Mitsubishi?

- The P0103 code can be triggered by a faulty mass air flow sensor, a dirty or clogged air filter, a vacuum leak, or issues with the wiring or connectors in the sensor circuit.

3. How can I diagnose the cause of the P0103 code in my Mitsubishi?

- You can use a scan tool to check the code, visually inspect the mass air flow sensor and its connections, test the sensor's voltage and resistance, and inspect the air filter for any obstructions.

4. Can a dirty air filter trigger the P0103 code in a Mitsubishi?

- Yes, a dirty or clogged air filter can disrupt the air flow to the mass air flow sensor, leading to incorrect readings and potentially triggering the P0103 code.

5. What are some repair tips for addressing the P0103 code in a Mitsubishi?

- Start by cleaning or replacing the air filter, inspecting and cleaning the mass air flow sensor, checking for any vacuum leaks, and ensuring all wiring and connections are secure and in good condition.

6. Can I drive my Mitsubishi with the P0103 code present?

- It is not recommended to drive your Mitsubishi with the P0103 code present, as it can lead to further engine performance issues and potential damage if left unresolved.

7. Will resetting the OBDII system clear the P0103 code in my Mitsubishi?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the P0103 code is not addressed, it is likely to reappear.

8. How much does it typically cost to repair the P0103 code in a Mitsubishi?

- The cost of repairing the P0103 code can vary depending on the exact cause and the labor rates in your area, but it may range from $100 to $300 or more, including parts and labor.

9. Can I replace the mass air flow sensor in my Mitsubishi myself?

- While it is possible to replace the mass air flow sensor yourself, it is recommended to have a professional mechanic diagnose the issue to ensure the correct part is replaced and that it is done correctly.

10. How long does it take to repair the P0103 code in a Mitsubishi?

- The repair time for the P0103 code can vary depending on the exact cause and the complexity of the repair, but it typically takes 1-2 hours for a professional mechanic to diagnose and address the issue.