P2501
Generator Lamp/L Terminal Circuit High
2014-2021 BMW i3 Range Extender
High SeverityPowertrainGeneric (SAE)
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
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P2501 on Other Vehicles
Common Questions
What does code P2501 mean on a 2014-2021 BMW i3?
P2501 stands for "Generator Lamp/L Terminal Circuit High". High signal on alternator exciter circuit.
What are the symptoms of P2501 on a BMW i3?
Common symptoms of P2501 include: Battery light behavior abnormal, Overcharging possible, Check engine light.
What causes P2501 on a 2014-2021 BMW i3?
Common causes of P2501 include: Short to voltage in exciter wire, Voltage regulator fault, ECM communication issue.