Charging System Voltage High
2019-2019 Buick Enclave 3.6L V6
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed p2504 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Charging system output voltage exceeds maximum safe threshold.
Symptoms
- Battery boiling/swelling
- Bulbs burning out frequently
- Check engine light
- Electrical component damage
Common Causes
- Failed voltage regulator
- ECM charging control fault
- Ground strap issue
Diagnostic Steps
- Measure charging voltage at various RPM
- Check voltage regulator
- Inspect ground straps
Repair Notes
Replace alternator or voltage regulator. Check and repair grounds. Overcharging can damage expensive electronics.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2504 on Other Vehicles
Common Questions
What does code P2504 mean on a 2019-2019 Buick Enclave?
P2504 stands for "Charging System Voltage High". Charging system output voltage exceeds maximum safe threshold.
What are the symptoms of P2504 on a Buick Enclave?
Common symptoms of P2504 include: Battery boiling/swelling, Bulbs burning out frequently, Check engine light, Electrical component damage.
What causes P2504 on a 2019-2019 Buick Enclave?
Common causes of P2504 include: Failed voltage regulator, ECM charging control fault, Ground strap issue.
Last updated: March 2026