Regenerative Braking System Performance Reduced
2012-2017 Buick Regal 2.4L I4 Hybrid
Description
The regenerative braking system is not recovering the expected amount of energy during deceleration. The system may be partially or fully disabled.
Symptoms
- Reduced regenerative braking force
- Conventional brakes used more than normal
- Brake pedal feel changed
- Battery not charging during deceleration
- Lower fuel economy (hybrid)
- Reduced range (EV)
Common Causes
- HV battery fully charged or too cold
- Motor/generator fault limiting regen
- Battery management limiting charge rate
- Friction brake system compensating
- Traction control intervening during regen
Diagnostic Steps
- Check battery SOC and temperature
- Monitor regen torque during deceleration
- Check for other hybrid system DTCs
- Inspect brake system for related codes
- Review BMS charge acceptance limits
Repair Notes
Diagnose root cause - battery temperature, SOC limits, or motor fault. Regen may be intentionally limited by BMS to protect battery.
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
P3250 on Other Vehicles
Common Questions
What does code P3250 mean on a 2012-2017 Buick Regal?
P3250 stands for "Regenerative Braking System Performance Reduced". The regenerative braking system is not recovering the expected amount of energy during deceleration. The system may be partially or fully disabled.
What are the symptoms of P3250 on a Buick Regal?
Common symptoms of P3250 include: Reduced regenerative braking force, Conventional brakes used more than normal, Brake pedal feel changed, Battery not charging during deceleration, Lower fuel economy (hybrid), Reduced range (EV).
What causes P3250 on a 2012-2017 Buick Regal?
Common causes of P3250 include: HV battery fully charged or too cold, Motor/generator fault limiting regen, Battery management limiting charge rate, Friction brake system compensating, Traction control intervening during regen.