AutoCodes – Audi – P0103 Audi

P0103 Audi Code - Mass or Volume Air Flow 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 Audi indicates Mass or Volume Air Flow 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 32,505

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 Audi 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 Audi - Mass or Volume Air Flow Circuit High Input - AutoCodes.com — P0103 Audi Code - Mass or Volume Air Flow Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 Audi?

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 Audi?

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 Audi 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 Audi Code

1. What are the common symptoms of OBDII code P0103 in an Audi?

- Common symptoms include poor engine performance, hesitation during acceleration, stalling, rough idling, and decreased fuel efficiency.

2. What does the OBDII code P0103 in an Audi indicate?

- OBDII code P0103 indicates a high input in the mass or volume air flow circuit, which means the engine is receiving more air flow signal than expected.

3. What are the possible causes of OBDII code P0103 in an Audi?

- Possible causes include a faulty mass air flow sensor, damaged air flow sensor wiring, a dirty air filter, vacuum leaks, or issues with the air intake system.

4. How can I diagnose the OBDII code P0103 in my Audi?

- You can diagnose the issue by performing a visual inspection of the air flow sensor and its wiring, checking the air filter for dirt or clogs, and using a diagnostic scanner to read live data from the sensor.

5. How can I repair OBDII code P0103 in my Audi?

- Repair options may include cleaning or replacing the mass air flow sensor, repairing damaged wiring, replacing the air filter, fixing any vacuum leaks, or addressing issues in the air intake system.

6. Can driving with OBDII code P0103 in my Audi cause further damage?

- Continuing to drive with this code may lead to poor engine performance, reduced fuel efficiency, and potential damage to the catalytic converter if left unresolved for an extended period.

7. Is it safe to reset the OBDII code P0103 in my Audi using a diagnostic scanner?

- While resetting the code may temporarily turn off the check engine light, it is important to diagnose and address the underlying issue to prevent potential long-term damage to the vehicle.

8. How much does it typically cost to repair OBDII code P0103 in an Audi?

- The cost of repair can vary depending on the cause of the issue and the specific parts needing replacement, but it can range from a few hundred to over a thousand dollars at a dealership or repair shop.

9. Can a DIY enthusiast fix OBDII code P0103 in an Audi?

- Yes, some DIY enthusiasts with the necessary tools and knowledge can attempt to diagnose and repair OBDII code P0103 themselves, but it is recommended to seek professional help if unsure.

10. Will OBDII code P0103 in my Audi affect its emissions compliance?

- Yes, OBDII code P0103 may cause the vehicle to fail emissions tests due to increased emissions and poor engine performance, so it is important to address the issue promptly.