System: Electrical · Standard: SAE J2012 generic code · Severity: Repair soon
The car will usually keep running, but continued driving risks secondary damage or an emissions failure. Book the repair.
Low voltage causes false codes across many modules. Fix the charging system before chasing any other code.
Start by reading every stored and pending code, not just this one. A single fault frequently sets three or four codes at once, and the first one in the freeze-frame data is usually the cause while the rest are consequences.
System voltage has dropped below the level the controller needs for reliable operation. System Voltage Low is a generic electrical code defined by SAE J2012, so it carries the same meaning on every OBD-II vehicle.
Repair soon. The car will usually keep running, but continued driving risks secondary damage or an emissions failure. Book the repair.
In rough order of how often they turn out to be the problem: Ageing battery; Failing alternator; Corroded battery terminals.
P0563 System Voltage HighP0600 Serial Communication Link MalfunctionP0601 Internal Control Module Memory Check Sum ErrorP0606 Control Module Processor FaultCode number, system and definition follow the SAE J2012 / ISO 15031-6 generic diagnostic trouble code standard. Symptoms, causes and severity are the standard generic diagnostic logic for that fault. This page does not contain manufacturer-specific procedures, part numbers or pricing.