Turbocharger Boost Control Position Sensor Circuit Intermittent
Common Symptoms
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor acceleration or turbo lag
- Intermittent boost pressure surges
- Erratic boost gauge readings
Most Likely Root Causes
- Faulty turbocharger wastegate position sensor
- Intermittent wiring connection or connector corrosion at position sensor
- Damaged wiring harness between sensor and ECM
- Failed wastegate actuator with integral sensor
- ECM internal fault
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Component Location
The turbocharger boost control position sensor is typically mounted on the wastegate actuator assembly located on the turbocharger housing.
Manufacturer Notes
Some manufacturers use integral wastegate actuator and position sensor assemblies that require replacement as a complete unit when sensor faults occur.
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