P2502
Charging System Voltage
P2502 is an OBD-II diagnostic trouble code meaning: Charging System Voltage. Common causes: faulty generator, worn or damaged alternator belt. Estimated repair cost: $56–278.
Symptoms
- Check engine light is on
- Weak or flickering headlights
- Problems starting the engine
- Reduced performance of electronic systems
- Battery low
Causes
- Faulty generator
- Worn or damaged alternator belt
- Bad contacts or damaged wiring
- Faulty voltage regulator
- Weak or old battery
How to Fix
- Check the condition and tension of the alternator belt
- Check the generator voltage at idle and under load
- Inspect the wiring and connections of the charging system
- Check the condition of the battery and its charge
- If necessary, replace the generator or voltage regulator
Related codes
Error P2502 by Vehicle Brand
FAQ
What does the P2502 code mean?
P2502 is an OBD-II diagnostic trouble code that indicates: Charging System Voltage
What causes a P2502 error code?
The most common causes of P2502 include: Faulty generator; Worn or damaged alternator belt; Bad contacts or damaged wiring; Faulty voltage regulator.
How do I fix a P2502 diagnostic trouble code?
To fix P2502: Check the condition and tension of the alternator belt. Check the generator voltage at idle and under load. Inspect the wiring and connections of the charging system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2502?
Limited driving only, diagnose soon
How much does it cost to fix P2502?
The estimated repair cost for P2502 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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