Electric Motor/Generator A Inverter Fault
2012-2017 Buick Regal 2.4L I4 Hybrid
Description
The inverter that controls the primary motor/generator has detected an internal fault. The inverter converts DC battery power to AC for the motor.
Symptoms
- Hybrid/EV warning light
- No electric drive available
- Vehicle may be immobile (EV)
- Reduced power (hybrid)
- Burning smell from inverter area
- Warning buzzer or chime
Common Causes
- Inverter IGBT module failure
- Inverter overtemperature
- Internal capacitor failure
- Control board malfunction
- Coolant leak into inverter housing
Diagnostic Steps
- Read inverter fault codes and freeze frame
- Check inverter coolant temperature
- Inspect inverter for external damage or leaks
- Test inverter DC bus voltage
- Check 3-phase motor wiring insulation
Repair Notes
Inverter replacement required for internal faults. Must be performed by HV-certified technician. Ensure HV system is de-energized before service.
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
P3222 on Other Vehicles
Common Questions
What does code P3222 mean on a 2012-2017 Buick Regal?
P3222 stands for "Electric Motor/Generator A Inverter Fault". The inverter that controls the primary motor/generator has detected an internal fault. The inverter converts DC battery power to AC for the motor.
What are the symptoms of P3222 on a Buick Regal?
Common symptoms of P3222 include: Hybrid/EV warning light, No electric drive available, Vehicle may be immobile (EV), Reduced power (hybrid), Burning smell from inverter area, Warning buzzer or chime.
What causes P3222 on a 2012-2017 Buick Regal?
Common causes of P3222 include: Inverter IGBT module failure, Inverter overtemperature, Internal capacitor failure, Control board malfunction, Coolant leak into inverter housing.