Motor/Generator Stator Winding Insulation Resistance Low
2012-2017 Buick Regal 2.4L I4 Hybrid
Description
The insulation resistance of the motor/generator stator windings has dropped below the safety threshold, indicating potential winding degradation.
Symptoms
- Motor output may be limited
- HV isolation warning possible
- Motor efficiency reduced
- Unusual motor noise
- Power output derated
Common Causes
- Moisture intrusion into motor housing
- Winding insulation aging
- Overtemperature damage to windings
- Contamination of windings
- Manufacturing defect
Diagnostic Steps
- Measure motor phase-to-ground insulation resistance
- Check motor housing for moisture intrusion
- Test phase-to-phase resistance balance
- Inspect motor cable glands and seals
- Review motor overtemperature history
Repair Notes
Motor replacement required if insulation resistance is below minimum specification. Repair any moisture intrusion path.
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
P3226 on Other Vehicles
Common Questions
What does code P3226 mean on a 2012-2017 Buick Regal?
P3226 stands for "Motor/Generator Stator Winding Insulation Resistance Low". The insulation resistance of the motor/generator stator windings has dropped below the safety threshold, indicating potential winding degradation.
What are the symptoms of P3226 on a Buick Regal?
Common symptoms of P3226 include: Motor output may be limited, HV isolation warning possible, Motor efficiency reduced, Unusual motor noise, Power output derated.
What causes P3226 on a 2012-2017 Buick Regal?
Common causes of P3226 include: Moisture intrusion into motor housing, Winding insulation aging, Overtemperature damage to windings, Contamination of windings, Manufacturing defect.