AutoCodes – Acura – P0102 Acura

P0102 Acura Code - Mass Air Flow Sensor Circuit Low Voltage

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: P0102 Acura indicates Mass Air Flow Sensor Circuit Low Voltage.
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 18,325

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 P0102 Acura 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 less than the factory specifications.

OBDII Code P0102 Acura - Mass Air Flow Sensor Circuit Low Voltage - AutoCodes.com — P0102 Acura Code - Mass Air Flow Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0102 Acura?

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 P0102 Acura?

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 P0102 Acura 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 P0102 Acura Code

1. What are the common symptoms of OBDII code P0102 in an Acura related to the Mass Air Flow Sensor Circuit Low Voltage?

The common symptoms include poor engine performance, rough idling, stalling, hesitation during acceleration, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0102 in an Acura due to a low voltage in the Mass Air Flow Sensor Circuit?

Potential causes include a faulty mass air flow sensor, damaged wiring or connectors in the sensor circuit, a clogged air filter restricting airflow, or a vacuum leak in the intake system.

3. How can I diagnose the issue causing OBDII code P0102 in my Acura related to the Mass Air Flow Sensor Circuit Low Voltage?

You can diagnose the problem by inspecting the mass air flow sensor and its wiring, checking the air filter for clogs, testing the sensor's voltage output, and scanning for any other related trouble codes.

4. Can a dirty mass air flow sensor cause OBDII code P0102 in an Acura?

Yes, a dirty or contaminated mass air flow sensor can disrupt the voltage readings and trigger code P0102. Cleaning the sensor may sometimes resolve the issue.

5. How can I repair OBDII code P0102 in my Acura if it is caused by a low voltage in the Mass Air Flow Sensor Circuit?

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

6. Will driving with OBDII code P0102 in an Acura harm the vehicle?

Continuing to drive with P0102 may lead to further engine performance issues, reduced fuel efficiency, and potential damage to other components over time. It's recommended to address the problem promptly.

7. Can a bad oxygen sensor trigger OBDII code P0102 in an Acura?

While a faulty oxygen sensor can cause related issues, it is not typically the direct cause of code P0102. Focus on checking the mass air flow sensor and its circuit first.

8. How much does it typically cost to repair OBDII code P0102 in an Acura at a professional auto repair shop?

The cost of repairing code P0102 can vary depending on the specific cause, parts needed, labor costs, and location. It's advisable to get a diagnostic assessment from a trusted mechanic for an accurate estimate.

9. Is it possible to reset OBDII code P0102 in an Acura without fixing the underlying issue?

Resetting the code without addressing the root cause, such as a faulty mass air flow sensor, will likely result in the code reappearing once the issue persists. It's best to resolve the problem for a lasting solution.

10. Will a disconnected or unplugged mass air flow sensor trigger OBDII code P0102 in an Acura?

Yes, if the mass air flow sensor is disconnected or unplugged, it can cause a low voltage reading in the circuit and trigger code P0102. Ensure the sensor is properly connected and functioning correctly.