Common Symptoms
- Check engine light illuminated
- Reduced engine power or lack of acceleration
- Poor fuel economy
- Black smoke from exhaust under load
- Engine may enter limp mode
- Hesitation or stumbling during acceleration
Most Likely Root Causes
- Faulty turbocharger boost pressure sensor
- Damaged or corroded wiring harness to boost sensor
- Poor electrical connection at sensor connector
- Failed ECM or internal ECM circuit fault
- Vacuum or pressure hose leak at boost sensor
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Component Location
The turbocharger boost pressure sensor is typically mounted on the intake manifold or intake plumbing between the turbocharger and throttle body.
Manufacturer Notes
Some manufacturers use a manifold absolute pressure sensor that also functions as the boost sensor on turbocharged applications.
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