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P1105 Mitsubishi Code - Fuel Pressure Solenoid

Quick Answer

The P1105 diagnostic trouble code for Mitsubishi vehicles relates to an issue with the fuel pressure solenoid. Common causes include Faulty fuel pressure solenoid, Clogged fuel filter, Fuel pump malfunction. 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
P1105 Mitsubishi indicates Fuel Pressure Solenoid.
Common causes
Common causes include Faulty fuel pressure solenoid, Clogged fuel filter, Fuel pump malfunction.
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 Sep 06, 2024
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Code P1105 Mitsubishi Description

The P1105 diagnostic trouble code for Mitsubishi vehicles relates to an issue with the fuel pressure solenoid. The fuel pressure solenoid is responsible for regulating the fuel pressure in the fuel system. When this solenoid malfunctions or fails, it can lead to a variety of issues with the vehicle's performance, including poor fuel efficiency, rough idling, stalling, and hesitation during acceleration. If left unresolved, a faulty fuel pressure solenoid can potentially cause damage to other components of the fuel system and lead to more serious engine problems.

OBDII Code P1105 Mitsubishi - Fuel Pressure Solenoid
P1105 Mitsubishi Code - Fuel Pressure Solenoid

Common Causes of P1105 Mitsubishi

  1. Faulty fuel pressure solenoid
  2. Clogged fuel filter
  3. Fuel pump malfunction
  4. Wiring or electrical issues
  5. Fuel pressure regulator failure

Symptoms of P1105 Mitsubishi

  1. Decreased fuel efficiency
  2. Rough idling or engine stalling
  3. Hesitation during acceleration
  4. Check engine light illuminated
  5. Engine misfires

How to Fix P1105 Mitsubishi

  1. Use a diagnostic scan tool to confirm the P1105 code and identify the specific issue with the fuel pressure solenoid.
  2. Inspect the fuel pressure solenoid and surrounding components for any visible damage or signs of wear.
  3. Test the fuel pressure solenoid to ensure it is functioning correctly or replace it if necessary.
  4. Check and replace the fuel filter if it is clogged or dirty.
  5. Test the fuel pump and fuel pressure regulator to ensure they are operating within the manufacturer's specifications.

Cost to Fix P1105 Mitsubishi

The typical repair costs for a P1105 code related to the fuel pressure solenoid can range from $200 to $500, including parts and labor. However, the actual cost can vary depending on the specific make and model of the vehicle, as well as the location and labor rates of the auto repair shop. It is recommended to obtain a detailed estimate from a qualified mechanic before proceeding with the repair.

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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 P1105 Mitsubishi Code

1. What does the OBDII code P1105 mean for a Mitsubishi?

P1105 indicates a malfunction in the fuel pressure solenoid circuit, which is responsible for controlling fuel pressure in the vehicle's fuel system.

2. What are the common symptoms of a P1105 code?

Symptoms may include poor engine performance, rough idling, difficulty starting, decreased fuel efficiency, or the illumination of the check engine light.

3. What causes the P1105 code in a Mitsubishi?

Common causes include a faulty fuel pressure solenoid, damaged or corroded wiring, a bad vacuum hose connection, or issues with the engine control module (ECM).

4. Can I drive my Mitsubishi with a P1105 code?

While driving may still be possible, ignoring the code can lead to reduced engine performance and potential long-term damage to the fuel system. It's best to address the issue promptly.

5. How can I diagnose the P1105 code?

Start by inspecting the fuel pressure solenoid, vacuum hoses, and wiring for damage or loose connections. Use a multimeter to test the solenoid and ensure proper voltage is reaching it.

6. How do I fix a P1105 code on my Mitsubishi?

Repairs may include replacing a faulty fuel pressure solenoid, repairing damaged wiring or connectors, replacing vacuum hoses, or reprogramming the ECM if needed.

7. How much does it cost to fix a P1105 code on a Mitsubishi?

The cost will vary depending on the issue. Replacing the fuel pressure solenoid can cost $100–$300, while wiring or hose repairs may cost less if done independently.

8. Can a dirty fuel filter cause a P1105 code?

While a dirty fuel filter can cause fuel delivery issues, it is not a direct cause of the P1105 code, which specifically pertains to the fuel pressure solenoid circuit.

9. Will clearing the P1105 code fix the problem?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.

10. Is a P1105 code specific to Mitsubishi vehicles?

While P1105 is a generic OBDII code, its specific definition and components involved, such as the fuel pressure solenoid, may vary by manufacturer.

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