LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2002 >> Insight Standard >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> IMA System >> DTC Troubleshooting >> DTC P1581 (21): Motor Power Inverter (MPI) Module Current Signal Circuit Problem; DTC P1589 (21): Motor Power Inverter (MPI) Module Current Signal Circuit Problem
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P1581 (21): Motor Power Inverter (MPI) Module Current Signal Circuit Problem; DTC P1589 (21): Motor Power Inverter (MPI) Module Current Signal Circuit Problem

NOTE:
  • Information marked with an asterisk (*) applies to 2005-2006 models.
  • Information marked with double asterisk (**) applies to 2000-2004 models.
  1. Reset the MCM (see HOW TO RESET THE MCM ).
  2. Turn the ignition switch ON (II).

    Is DTC P1581 (21)** (P1589 (21)*) indicated? 

    1. YES  - Go to step 3.
    2. NO  - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MPI module current sensor and at the MCM.
  3. Substitute a known-good MCM and recheck.

    Is DTC P1581 (21)** (P1589 (21)*) indicated? 

    1. YES  - Replace these items:
      • MPI module.
      • Battery module.
    2. NO  - Replace the original MCM.
scientia non olet · About LEMON Manuals