LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (PGM-FI System) >> DTC Troubleshooting >> DTC P0602: PCM Programming Error
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0602: PCM Programming Error

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 ).
  • This DTC is indicated when a PCM update is not completed.
  • Do not turn the ignition switch to ACC (I) or to LOCK (0) while updating the PCM. If you turn the ignition switch to ACC (I) or to LOCK (0) before completion, the PCM can be damaged.
  1. Do the PCM update procedure (see PCM UPDATE ).
  2. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0602 indicated? 

YES  -Replace the original PCM (see PCM REPLACEMENT ).

NO  -The update is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.