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P0108 Mitsubishi Code - Manifold Absolute Pressure Circuit High Input

Quick Answer

The P0108 code for Mitsubishi vehicles indicates a problem with the Manifold Absolute Pressure (MAP) sensor circuit registering a high input. Common causes include Faulty MAP Sensor: The most common cause is a malfunctioning MAP sensor that is sending incorrect signals to the ECU, Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the pressure readings, Wiring Issues: Damaged or corroded wiring connections to the MAP sensor can disrupt the signal. 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 Mitsubishi indicates Manifold Absolute Pressure Circuit High Input.
Common causes
Common causes include Faulty MAP Sensor: The most common cause is a malfunctioning MAP sensor that is sending incorrect signals to the ECU, Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the pressure readings, Wiring Issues: Damaged or corroded wiring connections to the MAP sensor can disrupt the signal.
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 Mitsubishi Description

The P0108 code for Mitsubishi vehicles indicates a problem with the Manifold Absolute Pressure (MAP) sensor circuit registering a high input. The MAP sensor is responsible for measuring the intake manifold pressure, which is crucial for the engine control unit (ECU) to determine the optimal air-fuel mixture for combustion. A high input signal from the MAP sensor can lead to incorrect calculations by the ECU, resulting in poor engine performance, decreased fuel efficiency, and potential drivability issues.

OBDII Code P0108 Mitsubishi - Manifold Absolute Pressure Circuit High Input
P0108 Mitsubishi Code - Manifold Absolute Pressure Circuit High Input

Common Causes of P0108 Mitsubishi

  1. Faulty MAP Sensor: The most common cause is a malfunctioning MAP sensor that is sending incorrect signals to the ECU.
  2. Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can affect the pressure readings.
  3. Wiring Issues: Damaged or corroded wiring connections to the MAP sensor can disrupt the signal.
  4. Intake Manifold Issues: A cracked or damaged intake manifold can also lead to high input readings.

Symptoms of P0108 Mitsubishi

  1. Check Engine Light: The most obvious symptom is the illumination of the Check Engine Light on the dashboard.
  2. Engine Stalling: The engine may stall or hesitate during acceleration due to incorrect air-fuel mixture.
  3. Decreased Power and Performance: The vehicle may experience a lack of power and reduced performance.
  4. Rough Idle: The engine may idle roughly or inconsistently.
  5. Increased Fuel Consumption: The vehicle may consume more fuel than usual due to the incorrect air-fuel mixture.

How to Fix P0108 Mitsubishi

  1. Diagnose: Use a diagnostic scanner to retrieve the trouble code and further investigate the MAP sensor and related components.
  2. Check Wiring: Inspect the wiring harness for any damage or corrosion, repair or replace as needed.
  3. Test MAP Sensor: Test the MAP sensor using a multimeter to ensure it is functioning correctly, replace if necessary.
  4. Check for Vacuum Leaks: Perform a smoke test to detect any vacuum leaks and fix them accordingly.
  5. Clear Code: After completing the repairs, clear the trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0108 Mitsubishi

The cost of repairing a P0108 code on a Mitsubishi vehicle can vary depending on the specific cause of the issue. On average, the repair costs can range from $100 to $300, including parts and labor. However, it's essential to consider that diagnostic time and labor rates can vary between different auto repair shops. It's recommended to consult with a local mechanic or dealership for a more accurate estimate based on your vehicle's make and model.

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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 Mitsubishi Code

1. What are the common symptoms of OBDII code P0108 in a Mitsubishi?

- Common symptoms include rough idling, engine stalling, decreased fuel efficiency, and a noticeable decrease in engine performance.

2. What does the OBDII code P0108 indicating a high input in the Manifold Absolute Pressure (MAP) circuit mean?

- This code indicates that the intake manifold pressure sensor is detecting a higher than normal pressure reading.

3. What are the typical causes of OBDII code P0108 in a Mitsubishi?

- Common causes include a faulty MAP sensor, damaged or disconnected wiring in the MAP sensor circuit, a clogged or dirty air filter, or a leak in the intake manifold.

4. How can I diagnose the OBDII code P0108 in my Mitsubishi?

- You can diagnose this code by using an OBDII scanner to read the code, visually inspecting the MAP sensor and its wiring for any damage, and testing the sensor's voltage output.

5. Can I continue driving my Mitsubishi with the OBDII code P0108?

- It is not recommended to continue driving with this code present, as it can lead to further engine damage and decreased performance.

6. How can I repair OBDII code P0108 in my Mitsubishi?

- Repair options include replacing the faulty MAP sensor, repairing or replacing damaged wiring, cleaning or replacing the air filter, and checking for any leaks in the intake manifold.

7. Is it possible to reset the OBDII code P0108 in my Mitsubishi without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause to prevent the code from reappearing.

8. Will driving with the OBDII code P0108 harm other components of my Mitsubishi?

- Driving with this code can potentially harm other engine components due to incorrect air-fuel ratios and increased stress on the engine.

9. How long does it typically take to repair OBDII code P0108 in a Mitsubishi?

- The repair time can vary depending on the exact cause of the code, but it usually takes between 1-2 hours for a straightforward repair.

10. Can a DIY enthusiast fix OBDII code P0108 in a Mitsubishi, or is it best left to professionals?

- While some may be able to diagnose and fix the issue themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair of this code.

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