Common Symptoms
- Check Engine Light illuminated
- Reduced engine power or limp mode activated
- Poor acceleration or turbo lag
- Black smoke from exhaust under load
- Rough idle or hesitation
- Decreased fuel economy
Most Likely Root Causes
- Faulty turbocharger boost pressure sensor
- Damaged or corroded wiring harness to boost sensor
- Poor electrical connection at sensor connector
- Vacuum leak in boost pressure reference line
- Failed Engine Control Module
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Component Location
The turbocharger boost pressure sensor is typically mounted on the intake manifold or intercooler piping near the throttle body.
Manufacturer Notes
Some manufacturers use a manifold absolute pressure sensor that also functions as the boost pressure sensor on turbocharged engines.
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