P2501
Generator Lamp/L Terminal Circuit High
2014-2014 Audi A6 3.0L Supercharged V6
High SeverityPowertrainGeneric (SAE)
The 2014 Audi A6 is equipped with a 3.0L V6 engine. Below you'll find detailed p2501 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
High signal on alternator exciter circuit.
Symptoms
- Battery light behavior abnormal
- Overcharging possible
- Check engine light
Common Causes
- Short to voltage in exciter wire
- Voltage regulator fault
- ECM communication issue
Diagnostic Steps
- Measure exciter circuit voltage
- Check for shorts to power
- Test alternator output
Repair Notes
Repair wiring or replace alternator.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P2501 on Other Vehicles
Common Questions
What does code P2501 mean on a 2014-2014 Audi A6?
P2501 stands for "Generator Lamp/L Terminal Circuit High". High signal on alternator exciter circuit.
What are the symptoms of P2501 on a Audi A6?
Common symptoms of P2501 include: Battery light behavior abnormal, Overcharging possible, Check engine light.
What causes P2501 on a 2014-2014 Audi A6?
Common causes of P2501 include: Short to voltage in exciter wire, Voltage regulator fault, ECM communication issue.
Last updated: March 2026