AutoCodes – Honda – P1587 Honda

P1587 Honda Code - Motor Power Inverter Module Current Signal Circuit Low Input

Quick Answer

Motor Power Inverter (MPI) Module control the DC/AC conversion (From the Integrated Motor Assisted (IMA) battery's 144 V DC to the IMA motor's 3-phase AC and vice versa). Common causes include Faulty Battery Module, Motor Power Inverter Module harness is open or shorted, Motor Power Inverter 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: P1587 Honda indicates Motor Power Inverter Module Current Signal Circuit Low Input.
Common causes: Common causes include Faulty Battery Module, Motor Power Inverter Module harness is open or shorted, Motor Power Inverter 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 3,031

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 May 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1587 Honda Description

Motor Power Inverter (MPI) Module control the DC/AC conversion (From the Integrated Motor Assisted (IMA) battery's 144 V DC to the IMA motor's 3-phase AC and vice versa).

The MPI module is air cooled. The heat fed through the heat sink is exhausted to the trunk compartment by the Intelligent Power Unit (IPU) module fan. The MPI module has a built-in temperature sensor. The sensor transmits temperature data to the Motor Control Module (MCM) for protection

OBDII Code P1587 Honda - Motor Power Inverter Module Current Signal Circuit Low Input - AutoCodes.com — P1587 Honda Code - Motor Power Inverter Module Current Signal Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P1587 Honda?

Faulty Battery Module
Motor Power Inverter Module harness is open or shorted
Motor Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1587 Honda?

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 P1587 Honda 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.

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Information for Specific Honda Models

P1587 2003 Honda Civic Hybrid — Motor Power Inverter Module Current Signal Circuit Low Input
P1587 2004 Honda Civic Hybrid — Motor Power Inverter Module Current Signal Circuit Low Input
P1587 2005 Honda Civic Hybrid — Motor Power Inverter Module Current Signal Circuit Low Input

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.