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P0108 Acura Code - Manifold Absolute Pressure Sensor Circuit High Voltage

Quick Answer

The P0108 code for Acura vehicles indicates a problem with the Manifold Absolute Pressure (MAP) sensor circuit, specifically indicating that the voltage being detected is too high. Common causes include Faulty MAP Sensor: The most common cause of this code is a malfunctioning MAP sensor that is sending a high voltage signal to the ECM, Wiring Issues: Damaged or corroded wiring leading to the MAP sensor can cause erratic voltage readings, Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the pressure readings detected by the MAP sensor. 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
P0108 Acura indicates Manifold Absolute Pressure Sensor Circuit High Voltage.
Common causes
Common causes include Faulty MAP Sensor: The most common cause of this code is a malfunctioning MAP sensor that is sending a high voltage signal to the ECM, Wiring Issues: Damaged or corroded wiring leading to the MAP sensor can cause erratic voltage readings, Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the pressure readings detected by the MAP sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0108 Acura Description

The P0108 code for Acura vehicles indicates a problem with the Manifold Absolute Pressure (MAP) sensor circuit, specifically indicating that the voltage being detected is too high. The MAP sensor plays a crucial role in the engine's operation by measuring the pressure inside the intake manifold. This information is used by the engine control module (ECM) to determine the correct air-fuel mixture for efficient combustion. When the voltage from the MAP sensor is too high, it can lead to incorrect fuel delivery and ignition timing, resulting in poor engine performance, reduced fuel efficiency, and potential damage to the engine over time.

OBDII Code P0108 Acura - Manifold Absolute Pressure Sensor Circuit High Voltage
P0108 Acura Code - Manifold Absolute Pressure Sensor Circuit High Voltage

Common Causes of P0108 Acura

  1. Faulty MAP Sensor: The most common cause of this code is a malfunctioning MAP sensor that is sending a high voltage signal to the ECM.
  2. Wiring Issues: Damaged or corroded wiring leading to the MAP sensor can cause erratic voltage readings.
  3. Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the pressure readings detected by the MAP sensor.
  4. ECM Malfunction: A rare but possible cause could be a faulty ECM that is misinterpreting the voltage signals from the MAP sensor.

Symptoms of P0108 Acura

  1. Check Engine Light: The most common symptom associated with the P0108 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Engine Performance: Drivers may experience a lack of power, hesitation, or stalling when accelerating due to incorrect fuel delivery.
  3. Rough Idling: The engine may idle erratically or inconsistently, leading to a rough running condition.
  4. Decreased Fuel Efficiency: A faulty MAP sensor can cause the engine to run rich or lean, resulting in decreased fuel economy.
  5. Engine Misfires: Incorrect air-fuel mixture can lead to engine misfires, causing shaking or vibrations while driving.

How to Fix P0108 Acura

  1. Diagnostic: The first step is to perform a thorough diagnostic to confirm the P0108 code and identify the root cause of the issue.
  2. MAP Sensor Replacement: If the sensor is found to be faulty, it will need to be replaced with a new one that meets the manufacturer's specifications.
  3. Wiring Inspection: Check the wiring leading to the MAP sensor for any damage or corrosion, repairing or replacing as necessary.
  4. Vacuum Leak Repair: Inspect the intake manifold and vacuum lines for any leaks, sealing or replacing any damaged components.
  5. ECM Reset: After completing the repairs, reset the ECM to clear the code and monitor the vehicle for any recurring issues.

Cost to Fix P0108 Acura

The cost of repairing a P0108 code on an Acura vehicle can vary depending on the specific model, the extent of the issue, and the labor rates in your area. On average, replacing a MAP sensor can cost between $100 and $250, including parts and labor. Additional costs may apply if wiring repairs or vacuum leak fixes are needed. Diagnostic time and labor rates at auto repair shops can range from $80 to $150 per hour, so it's advisable to inquire with local shops for a more accurate estimate.

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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 P0108 Acura Code

1. What does the OBDII code P0108 mean on an Acura?

P0108 indicates that the Manifold Absolute Pressure (MAP) sensor circuit is experiencing a high voltage condition, which could disrupt engine performance.

2. What are the common symptoms of the P0108 code in an Acura?

Symptoms may include poor fuel economy, engine hesitation or stalling, difficulty starting, rough idle, and an illuminated check engine light.

3. What causes the P0108 code to appear on an Acura?

Common causes include a faulty MAP sensor, damaged wiring or connectors, a vacuum leak, a clogged air filter, or a malfunctioning engine control module (ECM).

4. Can a dirty air filter trigger the P0108 code on an Acura?

Yes, a clogged or dirty air filter can restrict airflow, potentially causing abnormal MAP sensor readings and triggering the P0108 code.

5. How do I diagnose the P0108 code on my Acura?

Start by inspecting the MAP sensor and its wiring for damage, checking for vacuum leaks, cleaning or replacing the air filter, and using a multimeter to test sensor voltage.

6. Is it safe to drive an Acura with the P0108 code?

Driving with the P0108 code may be unsafe as it can cause performance issues like stalling or hesitation, which could compromise safety. It’s best to address the issue promptly.

7. How do I fix the P0108 code on my Acura?

Repairs may include replacing the MAP sensor, repairing damaged wiring, cleaning or replacing the air filter, fixing vacuum leaks, or updating/reprogramming the ECM if necessary.

8. Can a vacuum leak cause the P0108 code on an Acura?

Yes, a vacuum leak can lead to incorrect pressure readings by the MAP sensor, resulting in the P0108 code being stored.

9. How much does it cost to fix the P0108 code on an Acura?

Repair costs vary depending on the issue but typically range from $50 to $300 for parts and labor, with MAP sensor replacement being the most common repair.

10. Can resetting the check engine light fix the P0108 code on an Acura?

Resetting the light may clear the code temporarily, but if the underlying issue isn’t resolved, the code will likely return. Proper diagnosis and repair are necessary.

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