AutoCodes – Mitsubishi – P186D Mitsubishi

P186D Mitsubishi Code - High Side 1 System Voltage Low Range Out

Quick Answer

The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors the system and the voltage of the high side 1 circuit is determined to be too low. Common causes include Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU), TC-SST-ECU harness is open or shorted, TC-SST-ECU circuit poor electrical connection. 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: P186D Mitsubishi indicates High Side 1 System Voltage Low Range Out.
Common causes: Common causes include Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU), TC-SST-ECU harness is open or shorted, TC-SST-ECU circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,193

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P186D Mitsubishi Description

The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors the system and the voltage of the high side 1 circuit is determined to be too low.

OBDII Code P186D Mitsubishi - High Side 1 System Voltage Low Range Out - AutoCodes.com — P186D Mitsubishi Code - High Side 1 System Voltage Low Range Out

What does this mean?

What are the Possible Causes of the DTC P186D Mitsubishi?

Faulty Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU)
TC-SST-ECU harness is open or shorted
TC-SST-ECU circuit poor electrical connection

How to Fix the DTC P186D Mitsubishi?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P186D Mitsubishi 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.

Need more information about the P186D Mitsubishi code?

Need more information on how to fix the P186D Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P186D Mitsubishi code diagnosed by a professional: Find a repair shop in your area

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 P186D Mitsubishi Code

1. What are the common symptoms of OBDII code P186D in a Mitsubishi?

- Common symptoms include rough idling, decreased engine performance, and potential stalling.

2. What could cause the High Side 1 System Voltage Low Range Out code in a Mitsubishi?

- Possible causes could be a faulty high-pressure fuel pump, a damaged fuel pressure sensor, or issues with the fuel system.

3. How can I diagnose the OBDII code P186D in my Mitsubishi?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code and then performing a thorough inspection of the fuel system components.

4. Can a bad fuel filter trigger the P186D code in a Mitsubishi?

- Yes, a clogged or malfunctioning fuel filter can cause a drop in fuel pressure, leading to the High Side 1 System Voltage Low Range Out code.

5. What are some repair tips for addressing the High Side 1 System Voltage Low Range Out code?

- Start by inspecting the fuel pump, fuel pressure sensor, and fuel lines for any signs of damage or wear. Replace any faulty components as needed.

6. Is it safe to continue driving my Mitsubishi with the P186D code present?

- It is not recommended to drive your vehicle with the P186D code as it can lead to potential engine damage or performance issues.

7. Can a DIY enthusiast fix the OBDII code P186D on a Mitsubishi?

- While some simple inspections and component replacements can be done by DIYers, it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is properly resolved.

8. How much does it typically cost to repair the High Side 1 System Voltage Low Range Out code in a Mitsubishi?

- The cost of repair can vary depending on the specific cause of the code and the labor rates in your area. It is advisable to get quotes from local mechanics for an accurate estimate.

9. Will resetting the OBDII code P186D on my Mitsubishi make it go away permanently?

- Simply resetting the code without addressing the underlying issue will not resolve the problem. It is important to diagnose and repair the cause of the code to prevent it from reoccurring.

10. Can extreme weather conditions affect the triggering of the P186D code in a Mitsubishi?

- Yes, extreme temperatures or weather conditions can sometimes exacerbate existing fuel system issues, leading to the activation of the High Side 1 System Voltage Low Range Out code.