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P2503 Severity
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
If the battery voltage falls below 10 volts for more than 8 seconds, code P2503 will be stored.
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OBD-II Code P2503 is defined as a Charging System Voltage Low
If the battery voltage falls below 10 volts for more than 8 seconds, code P2503 will be stored.