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DTC P0602: ECM/PCM Programming Error (2005-2007 models) Honda Accord VII

Testing & Diagnostics ~111 words

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 the ECM/PCM update is not completed. Do not turn the ignition switch OFF while updating the ECM/PCM. If you turn the ignition switch OFF before completion, the ECM/PCM can be damaged.

  1. Do the ECM/PCM update procedure (see «UPDATING THE ECM/PCM»(ref-217088-S24744287632006012800000) , «SUBSTITUTE THE ECM/PCM»(ref-217088-S19980179352006012800000) ).
  2. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0602 indicated? YES - Replace the original ECM/PCM (see «'03-05 models»(ref-217090-S38499727802008070700000) , «'06-07 models»(ref-217090-S00958644352008070700000) ). NO - Updating is complete.

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