Electric Turbocharger/E-Compressor Motor Fault
2019-2019 Buick Enclave 3.6L V6
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed p3031 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The electric turbocharger or electric compressor motor has an electrical fault. E-turbos eliminate turbo lag by using an electric motor to spool the compressor.
Symptoms
- Check Engine Light
- Turbo lag returns (no electric assist)
- Reduced low-RPM torque
- 48V system warning may accompany
- E-compressor noise absent
- Slower throttle response
Common Causes
- E-compressor motor winding failure
- Inverter circuit fault
- 48V power supply insufficient
- Motor bearing failure
- Overtemperature shutdown
Diagnostic Steps
- Read e-compressor fault codes
- Check 48V supply to e-compressor
- Test motor phase resistance
- Monitor motor temperature
- Command e-compressor operation via scan tool
Repair Notes
Replace e-compressor motor or inverter assembly. Check 48V system health. These are typically found on 48V mild hybrid systems.
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
P3031 on Other Vehicles
Common Questions
What does code P3031 mean on a 2019-2019 Buick Enclave?
P3031 stands for "Electric Turbocharger/E-Compressor Motor Fault". The electric turbocharger or electric compressor motor has an electrical fault. E-turbos eliminate turbo lag by using an electric motor to spool the compressor.
What are the symptoms of P3031 on a Buick Enclave?
Common symptoms of P3031 include: Check Engine Light, Turbo lag returns (no electric assist), Reduced low-RPM torque, 48V system warning may accompany, E-compressor noise absent, Slower throttle response.
What causes P3031 on a 2019-2019 Buick Enclave?
Common causes of P3031 include: E-compressor motor winding failure, Inverter circuit fault, 48V power supply insufficient, Motor bearing failure, Overtemperature shutdown.
Last updated: March 2026