P2262
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.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Common causes
Ordered by how often each turns out to be the cause.
- Charge pipe loose or splitCommon
- Turbocharger mechanical damagePossible
- Wastegate stuck openPossible
Parts involved
- Turbocharger
- Charge Air Pipe
- Wastegate Actuator
- Boost Pressure Sensor
P2262 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.