"False" trouble codes may cause erroneous illumination of the Check Engine Light. Updating the PCM software can often correct this concern.
Car Problem Reports
Dodge Charger Software Updates For Powertrain Control Module to Address Erroneous CEL
Dodge Charger Problem
Model Year Affected: 2006
Exhaust & Emissions Affected: V6
Visitor, 2006 Dodge Charger, 34,000 mi
They did a diagnosis check and they had my car for two days. The same thing happen about a week later and I just don't have time to waste on the going to shop. It is still on at 67000.