Turbo Boost Pressure Not Detected - Mechanical
The ECU does not detect any meaningful boost pressure increase under load even though the turbocharger is commanded. Likely a mechanical defect in the turbo, charge-air piping or wastegate.
Affected components
- Turbocharger
- Charge air pipe
- Wastegate actuator
- Boost pressure sensor
Common causes
- High likelihood: Charge pipe loose or split
- Medium likelihood: Turbocharger mechanical damage
- Medium likelihood: Wastegate stuck open
Possible symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.