Electric Motor/Generator A Overtemperature
2012-2017 Buick Regal 2.4L I4 Hybrid
Description
The primary motor/generator has exceeded its maximum operating temperature. Power output is being reduced to protect the motor.
Symptoms
- Reduced power warning
- Significant acceleration reduction
- Motor whine may change pitch
- Turtle mode or limp home
- Climate control may shut off to reduce load
- Regenerative braking reduced
Common Causes
- Extended high-power driving
- Cooling system malfunction
- Ambient temperature extremely high
- Towing or climbing grades
- Coolant flow restriction to motor
Diagnostic Steps
- Read motor temperature and compare to spec
- Check motor cooling circuit flow
- Inspect coolant level in motor circuit
- Verify cooling fan operation
- Review driving conditions that triggered code
Repair Notes
Allow motor to cool before resuming normal driving. Inspect motor cooling system. Replace coolant pump if flow is inadequate.
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
P3221 on Other Vehicles
Common Questions
What does code P3221 mean on a 2012-2017 Buick Regal?
P3221 stands for "Electric Motor/Generator A Overtemperature". The primary motor/generator has exceeded its maximum operating temperature. Power output is being reduced to protect the motor.
What are the symptoms of P3221 on a Buick Regal?
Common symptoms of P3221 include: Reduced power warning, Significant acceleration reduction, Motor whine may change pitch, Turtle mode or limp home, Climate control may shut off to reduce load, Regenerative braking reduced.
What causes P3221 on a 2012-2017 Buick Regal?
Common causes of P3221 include: Extended high-power driving, Cooling system malfunction, Ambient temperature extremely high, Towing or climbing grades, Coolant flow restriction to motor.