Sonata V6-3.0L (1991)
Malfunction Indicator Lamp: Service and Repair
The check engine lamp will be illuminated when the ignition switch is in the ON position with engine not operating. When engine is started, the Check
Engine lamp should go OFF. If lamp remains ON, a code has been stored by the Electronic Control System. After diagnosis and repair, place ignition
switch in OFF position, then clear codes stored in the Electronic Control System memory by disconnecting the the battery ground cable for at
least 16 seconds.
