What Does P2503 Code Mean?
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.
P2503 Symptoms
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Engine may not start
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Engine may stall
Common Problems That Trigger the P2503 Code
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Alternator failure
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Battery failure
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Wiring issue
Common Repairs Needed for the P2503 Code
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Battery Replacement
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Alternator Replacement