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Home >> Chevrolet >> 2010 >> Cobalt LS, 4D Sedan, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (VSA (Vehicle Stability Assist) System Components) >> DTC Troubleshooting >> DTC 158: ECU Software Update Failure

DTC 158: ECU Software Update Failure

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.
  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 necessary, substitute a known-good VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ), and retest.

    NO  -The system is OK at this time.

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