P0248
Turbocharger Wastegate Solenoid B High
The control circuit for wastegate solenoid B reports a voltage above the expected range. Typical causes are a short to power or an open ground.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
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.
- Wastegate solenoid B defectiveCommon
- Wiring shorted to powerPossible
- Ground circuit openLess likely
Parts involved
- Wastegate Solenoid
- Turbocharger
- Solenoid Wiring
P0248 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.