HV System Voltage Sag Under Load
2012-2017 Buick Regal 2.4L I4 Hybrid
Description
The HV bus voltage drops excessively under high-current load conditions, indicating high internal resistance in the battery or connection path.
Symptoms
- Reduced acceleration under load
- Momentary power cutbacks
- Voltage warning under hard acceleration
- Reduced fast-charging acceptance
- Performance inconsistent
- Power limit kicks in early
Common Causes
- Battery internal resistance elevated
- HV bus connection resistance high
- Battery cell degradation
- Contactor contact resistance increased
- HV cable connection loose
Diagnostic Steps
- Monitor HV bus voltage during high-load events
- Compare loaded vs unloaded voltage
- Test battery internal resistance
- Inspect HV bus connections and torque
- Check contactor contact resistance
Repair Notes
Tighten HV bus connections to specification. Replace battery modules with elevated internal resistance. Replace contactors if contact resistance is high.
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
P3292 on Other Vehicles
Common Questions
What does code P3292 mean on a 2012-2017 Buick Regal?
P3292 stands for "HV System Voltage Sag Under Load". The HV bus voltage drops excessively under high-current load conditions, indicating high internal resistance in the battery or connection path.
What are the symptoms of P3292 on a Buick Regal?
Common symptoms of P3292 include: Reduced acceleration under load, Momentary power cutbacks, Voltage warning under hard acceleration, Reduced fast-charging acceptance, Performance inconsistent, Power limit kicks in early.
What causes P3292 on a 2012-2017 Buick Regal?
Common causes of P3292 include: Battery internal resistance elevated, HV bus connection resistance high, Battery cell degradation, Contactor contact resistance increased, HV cable connection loose.