Engine-CodesAcura – P1103 Acura

P1103 Acura Code - Mass Airflow Sensor Higher Than Expected

Quick Answer

The P1103 diagnostic trouble code for Acura vehicles indicates that the Mass Airflow Sensor (MAF) is reading a higher airflow rate than expected by the Engine Control Module (ECM). Common causes include Dirty or contaminated MAF sensor, Faulty MAF sensor, Air leaks in the intake system. 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
P1103 Acura indicates Mass Airflow Sensor Higher Than Expected.
Common causes
Common causes include Dirty or contaminated MAF sensor, Faulty MAF sensor, Air leaks in the intake system.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1103 Acura Description

The P1103 diagnostic trouble code for Acura vehicles indicates that the Mass Airflow Sensor (MAF) is reading a higher airflow rate than expected by the Engine Control Module (ECM). The MAF sensor plays a crucial role in measuring the amount of air entering the engine, which is essential for calculating the correct air-fuel mixture for combustion. When the MAF sensor reports a higher airflow than actual, it can lead to an incorrect fuel mixture being injected into the engine, affecting performance and efficiency.

OBDII Code P1103 Acura - Mass Airflow Sensor Higher Than Expected
P1103 Acura Code - Mass Airflow Sensor Higher Than Expected

Common Causes of P1103 Acura

  1. Dirty or contaminated MAF sensor
  2. Faulty MAF sensor
  3. Air leaks in the intake system
  4. Clogged air filter
  5. Wiring or connector issues related to the MAF sensor

Symptoms of P1103 Acura

  1. Reduced fuel economy
  2. Engine hesitation or stalling
  3. Rough idling or misfiring
  4. Check engine light illuminated
  5. Reduced engine performance

How to Fix P1103 Acura

  1. Start by disconnecting the battery to reset the ECM and clear the error code.
  2. Inspect and clean the MAF sensor using MAF sensor cleaner to remove any dirt or debris.
  3. Check for air leaks in the intake system and repair or replace any damaged components.
  4. Replace the MAF sensor if cleaning does not resolve the issue.
  5. Perform a thorough inspection of the air filter and replace if necessary.

Cost to Fix P1103 Acura

The cost of repairing a P1103 code on an Acura vehicle can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing a MAF sensor ranges from $100 to $400, including parts and labor. However, additional costs may apply if other components need to be replaced or if extensive diagnostic work is required. It's essential to consult with a qualified mechanic to get an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary significantly between different repair shops and locations.

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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.

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