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P186E Mitsubishi Code - High Side 2 System Voltage Low Range Out

Quick Answer

The P186E code in Mitsubishi vehicles indicates a problem with the High Side 2 System Voltage being in the low range. Common causes include Faulty High Side 2 System Voltage regulator, Wiring issues or shorts, Excessive power draw from a component. 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
P186E Mitsubishi indicates High Side 2 System Voltage Low Range Out.
Common causes
Common causes include Faulty High Side 2 System Voltage regulator, Wiring issues or shorts, Excessive power draw from a component.
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 12, 2024
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Code P186E Mitsubishi Description

The P186E code in Mitsubishi vehicles indicates a problem with the High Side 2 System Voltage being in the low range. This system is responsible for regulating the voltage supplied to various components in the vehicle, such as the fuel injectors, ignition coils, and sensors. When the voltage is too low, it can lead to various issues with the vehicle's performance and overall functionality.

OBDII Code P186E Mitsubishi - High Side 2 System Voltage Low Range Out
P186E Mitsubishi Code - High Side 2 System Voltage Low Range Out

Common Causes of P186E Mitsubishi

  1. Faulty High Side 2 System Voltage regulator
  2. Wiring issues or shorts
  3. Excessive power draw from a component
  4. Poor electrical connections

Symptoms of P186E Mitsubishi

  1. Engine misfires
  2. Rough idling
  3. Stalling
  4. Poor acceleration
  5. Difficulty starting the vehicle

How to Fix P186E Mitsubishi

  1. Diagnose the root cause of the issue using a scan tool to pinpoint the exact component or wiring causing the low voltage.
  2. Inspect the High Side 2 System Voltage regulator and wiring for any signs of damage or wear.
  3. Repair or replace any faulty components, such as the regulator or damaged wiring.
  4. Clear the diagnostic trouble codes from the vehicle's system and test drive to ensure the issue has been resolved.
  5. If needed, recalibrate the High Side 2 System Voltage to ensure proper functionality.

Cost to Fix P186E Mitsubishi

The typical repair costs for addressing a P186E code in a Mitsubishi vehicle can vary depending on the specific cause of the issue. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. However, it's essential to keep in mind that the actual cost can be higher or lower based on factors such as location, vehicle make and model, and the specific repair shop you go to. It's recommended to obtain quotes from multiple auto repair shops to get a more accurate estimate for your particular situation.

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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 P186E Mitsubishi Code

1. What are the common symptoms of OBDII code P186E in a Mitsubishi vehicle?

The common symptoms of OBDII code P186E include rough idling, poor acceleration, reduced engine power, and potentially stalling.

2. What does the OBDII code P186E "High Side 2 System Voltage Low Range Out" mean in a Mitsubishi?

The code P186E indicates that the voltage on the high side of the fuel pump control circuit is below the expected range in a Mitsubishi vehicle.

3. What are the possible causes of OBDII code P186E in a Mitsubishi?

Possible causes of code P186E include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump control module, or issues with the vehicle's power supply.

4. How can I diagnose OBDII code P186E in my Mitsubishi?

Diagnosing code P186E involves using a scan tool to retrieve the code, inspecting the fuel pump and its circuit for any visible damage, and testing the fuel pump control module and related components for proper functionality.

5. Is it safe to drive my Mitsubishi with OBDII code P186E active?

It is not recommended to drive your Mitsubishi with OBDII code P186E active, as it can lead to further damage to the fuel pump system and potentially cause engine performance issues.

6. Can I reset OBDII code P186E in my Mitsubishi without fixing the underlying issue?

While you can clear the code temporarily, it will likely reappear until the root cause is addressed. It is important to diagnose and repair the issue to prevent further problems.

7. How much does it typically cost to repair OBDII code P186E in a Mitsubishi?

The cost of repairing OBDII code P186E in a Mitsubishi can vary depending on the specific cause of the issue, but it may involve replacing the fuel pump, repairing wiring, or replacing the fuel pump control module.

8. Are there any DIY tips for fixing OBDII code P186E in a Mitsubishi?

DIY tips for addressing code P186E include checking for loose or damaged wiring in the fuel pump circuit, ensuring proper connections, and testing the fuel pump and control module with a multimeter.

9. Can a mechanic easily fix OBDII code P186E in a Mitsubishi?

A qualified mechanic with experience in diagnosing and repairing fuel system issues should be able to efficiently address OBDII code P186E in a Mitsubishi by pinpointing the root cause and carrying out the necessary repairs.

10. How can I prevent OBDII code P186E from occurring in my Mitsubishi in the future?

To prevent OBDII code P186E from occurring, it is essential to regularly maintain your vehicle, keep an eye on fuel system components for signs of wear, and address any issues promptly to avoid potential failures.

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