Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor

Where it lives

For U02B0, the part to look at first is the sensor named here.

Check these first

• A damaged or disconnected harness to the boost control B position sensor
• A failed boost control B position sensor
• Carbon or oil contamination on the sensor
• A sensor connector loose or corroded
• A fault in the control module blocking the signal

What to do next

1. Inspect the wiring and connector at the boost control B position sensor
2. Check the sensor reading on a scan tool
3. Clean contamination from the sensor
4. Verify the control module reads the sensor
5. Replace the boost control B position sensor if the signal is dead
6. Clear the code and retest

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