Engine-Codes.com
Engine-Codes – Mitsubishi – P186A Mitsubishi

P186A Mitsubishi Code - High Side 3 System Overcurrent

Quick Answer

The P186A diagnostic trouble code for Mitsubishi vehicles indicates a High Side 3 System Overcurrent. Common causes include Short circuit in the high side 3 system, Faulty transmission control module (TCM), Damaged wiring or connectors. 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
P186A Mitsubishi indicates High Side 3 System Overcurrent.
Common causes
Common causes include Short circuit in the high side 3 system, Faulty transmission control module (TCM), Damaged wiring or connectors.
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 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P186A Mitsubishi Description

The P186A diagnostic trouble code for Mitsubishi vehicles indicates a High Side 3 System Overcurrent. This code is typically related to the vehicle's transmission system. The high side refers to the positive voltage side of the transmission control module (TCM) circuit. An overcurrent condition in this system can lead to various issues with the transmission's operation.

OBDII Code P186A Mitsubishi - High Side 3 System Overcurrent
P186A Mitsubishi Code - High Side 3 System Overcurrent

Common Causes of P186A Mitsubishi

  1. Short circuit in the high side 3 system
  2. Faulty transmission control module (TCM)
  3. Damaged wiring or connectors
  4. Overloaded electrical system
  5. Faulty transmission solenoid

Symptoms of P186A Mitsubishi

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Reduced fuel efficiency
  4. Illumination of the Check Engine Light
  5. Transmission going into limp mode

How to Fix P186A Mitsubishi

  1. Begin by conducting a thorough inspection of the high side 3 system, checking for any visible signs of damage or corrosion.
  2. Use a multimeter to test the continuity and resistance of the wiring and connectors in the high side 3 circuit.
  3. Inspect the transmission control module (TCM) for any signs of damage or malfunction. Replace if necessary.
  4. Check the transmission solenoid for proper operation and replace if found to be faulty.
  5. Clear the trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P186A Mitsubishi

The cost of repairing a High Side 3 System Overcurrent issue in a Mitsubishi vehicle can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the parts and labor for this repair could range from $200 to $600. However, it is essential to note that labor rates at auto repair shops can vary significantly, so it is advisable to obtain quotes from multiple shops to get a more accurate estimate. Additionally, the cost of parts and the complexity of the repair can also impact the overall cost.

Need more information about the P186A Mitsubishi code?

Need more information on how to fix the P186A Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P186A 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 P186A Mitsubishi Code

1. What are the common symptoms of OBDII code P186A in a Mitsubishi related to High Side 3 System Overcurrent?

Symptoms may include illuminated Check Engine light, reduced engine performance, and potential transmission shifting issues.

2. What can cause the OBDII code P186A in a Mitsubishi indicating High Side 3 System Overcurrent?

Possible causes include a faulty transmission control module, damaged wiring or connectors, or a malfunctioning solenoid or actuator in the transmission system.

3. How can I diagnose the OBDII code P186A in my Mitsubishi for High Side 3 System Overcurrent?

Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the transmission system components for any visible damage, and conducting electrical tests to identify the root cause.

4. Is it safe to continue driving my Mitsubishi with the OBDII code P186A related to High Side 3 System Overcurrent?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission system and potentially unsafe driving conditions.

5. Can I reset the OBDII code P186A in my Mitsubishi after repairing the High Side 3 System Overcurrent issue?

After addressing the underlying cause of the code, you can reset it using an OBDII scanner to clear the fault codes and turn off the Check Engine light.

6. Are there any DIY repair tips for fixing the OBDII code P186A in a Mitsubishi due to High Side 3 System Overcurrent?

DIY repairs may include checking and repairing damaged wiring, replacing faulty transmission components, or cleaning and securing electrical connections associated with the High Side 3 System.

7. How much does it typically cost to repair the OBDII code P186A related to High Side 3 System Overcurrent in a Mitsubishi?

The cost of repairs can vary depending on the extent of the damage and the specific components that need to be replaced, but it may range from a few hundred to over a thousand dollars.

8. Can a mechanic easily fix the OBDII code P186A in a Mitsubishi caused by High Side 3 System Overcurrent?

A qualified mechanic with experience in diagnosing and repairing transmission issues should be able to efficiently address the High Side 3 System Overcurrent problem in a Mitsubishi.

9. Will ignoring the OBDII code P186A in my Mitsubishi related to High Side 3 System Overcurrent cause further damage to the vehicle?

Continuing to drive with this code can potentially lead to more severe transmission problems over time, so it is advisable to address the issue promptly to prevent further damage.

10. How long does it typically take to repair the OBDII code P186A in a Mitsubishi triggered by High Side 3 System Overcurrent?

The repair time can vary based on the exact cause of the issue and the availability of replacement parts, but it may take a few hours to a full day to diagnose and fix the problem.

Discuss the causes and fixes for P186A Mitsubishi OBDII Code

Submit a New Comment

Code P186A Mitsubishi comments

No comments found for this page.