LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2012 >> Insight Base >> Repair and Diagnosis >> Brakes >> Traction Control >> VSA System Components >> DTC Troubleshooting >> DTC 158: ECU Software Update Failure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC 158: ECU Software Update Failure

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).
  1. Update the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT UPDATE ).
  2. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
  3. Check for DTCs with the HDS.

    Is DTC 158 indicated? 

    YES  -Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

    NO  -Intermittent failure, the system is OK at this time. Refer to INTERMITTENT FAILURES TROUBLESHOOTING .

scientia non olet · About LEMON Manuals