AutoCodes – Generic – P1D86

P1D86 Code - Traction Motor Inverter Module Malfunction Signal Line Hi

Quick Answer

The motor control module receives the abnormality inside the Motor Power Inverter (MPI) Module detected by MPI module as an abnormality signal. Common causes include Faulty Motor Power Inverter (MPI) Module, Motor Power Inverter (MPI) Module harness is open or shorted, Motor Power Inverter (MPI) Module 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: P1D86 indicates Traction Motor Inverter Module Malfunction Signal Line Hi.
Common causes: Common causes include Faulty Motor Power Inverter (MPI) Module, Motor Power Inverter (MPI) Module harness is open or shorted, Motor Power Inverter (MPI) Module 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.

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Code Popularity 1,951

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 Apr 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D86 Description

The motor control module receives the abnormality inside the Motor Power Inverter (MPI) Module detected by MPI module as an abnormality signal. If abnormality detection signal FOMOT signal of MPI module is high, and FOALL signal without the OR of the abnormality signal from MPI module is low, and continues to be so for a set time, the motor control module detects a malfunction and stores a DTC.

OBDII Code P1D86 - Traction Motor Inverter Module Malfunction Signal Line Hi - AutoCodes.com — P1D86 Code - Traction Motor Inverter Module Malfunction Signal Line Hi

What does this mean?

What are the Possible Causes of the DTC P1D86?

Faulty Motor Power Inverter (MPI) Module
Motor Power Inverter (MPI) Module harness is open or shorted
Motor Power Inverter (MPI) Module circuit poor electrical connection
Faulty Motor Control Module

How to Fix the DTC P1D86?

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 P1D86 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 P1D86 code?

Need more information on how to fix the P1D86 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1D86 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1D86 Acura — Traction Motor Inverter Module Malfunction Signal Line Hi
P1D86 Honda — Traction Motor Inverter Module Malfunction Signal Line Hi

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 P1D86 Code

1. What are the common symptoms of OBDII code P1D86?

- Common symptoms include poor acceleration, reduced power output, warning lights on the dashboard, and potential drivability issues.

2. What can cause the OBDII code P1D86 to appear?

- This code is typically triggered by a malfunction in the traction motor inverter module signal line, which may be caused by wiring issues, a faulty inverter module, or a defective electrical connector.

3. How serious is the Traction Motor Inverter Module Malfunction Signal Line Hi code?

- Ignoring this code can lead to further damage to the traction motor system and affect the overall performance of the vehicle. It is recommended to address the issue promptly.

4. How can I diagnose the cause of OBDII code P1D86?

- Diagnosing this code may require the use of a professional OBDII scanner to read the specific details of the fault, as well as a thorough inspection of the traction motor inverter module and its related components.

5. Can I repair OBDII code P1D86 on my own?

- Repairing this code may require advanced automotive knowledge and specialized tools. It is recommended to consult a qualified mechanic or dealership for proper diagnosis and repair.

6. Is it safe to continue driving with the Traction Motor Inverter Module Malfunction Signal Line Hi code?

- It is not recommended to continue driving with this code present, as it can lead to potential safety hazards and further damage to the vehicle's traction motor system.

7. How much does it typically cost to repair OBDII code P1D86?

- The cost of repair can vary depending on the underlying cause of the issue, parts needed for replacement, and labor charges. It is advisable to request quotes from different repair shops for an accurate estimate.

8. Are there any preventive maintenance tips to avoid OBDII code P1D86?

- Regular inspection of the traction motor system, ensuring proper wiring connections, and addressing any warning lights promptly can help prevent the occurrence of this code.

9. Can a faulty traction motor inverter module affect other vehicle systems?

- Yes, a malfunctioning traction motor inverter module can impact the overall performance of the hybrid or electric vehicle, including power delivery, fuel efficiency, and drivability.

10. How long does it typically take to repair OBDII code P1D86?

- The repair time can vary depending on the complexity of the issue and availability of parts. It is advisable to consult the mechanic or dealership for an estimated repair time.