Turbocharger Boost Control Position Sensor B Circuit Intermittent/Erratic
Position sensor B signal jumps or drops out — vibration on the actuator, oil mist contamination or chafed wiring near the hot turbo.
Affected components
- Turbo actuator position sensor b
- Sensor wiring
Common causes
- High likelihood: Vibration-induced chafing of the harness
- Medium likelihood: Oil mist on the sensor
- Low likelihood: Connector with intermittent contact under vibration
Possible symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.