Detection Condition
WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when PCM detects generator output is more than 18.47 volts or battery voltage is more than 15.94 volts for 5 seconds while engine is running.