DTC P0A78 (32): Motor Power Inverter (MPI) Module Internal Circuit Malfunction

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
If the DTC cannot be cleared, do the troubleshooting for DTC U1204 (55).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS (see DTC CLEAR ).
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P1437 (41) indicated?

YES -Do the troubleshooting for DTC P1437 (41) (see DTC P1437 (41): MOTOR POWER INVERTER (MPI) MODULE SHORT CIRCUIT ).

NO -go to step 4.
Start the engine.
Monitor the OBD STATUS for DTC P0A78 (32) in the DTCs MENU with the HDS.
Does the screen indicate FAILED?

YES -Replace the MPI module (see MOTOR POWER INVERTER (MPI) MODULE REMOVAL/INSTALLATION ), then go to step 6.

NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, go to step 1.
Turn the ignition switch to ON (II).
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0A78 (32) indicated?

YES -go to step 1.

NO -go to step 8.
Monitor the OBD STATUS for DTC P0A78 (32) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?

YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 7, go to the indicated DTC's troubleshooting.

NO -If the screen indicates FAILED, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.