Turbocharger/Supercharger Boost Control B Module Performance

Where it lives

For P00B0, the part to look at first is the module named here.

Check these first

• A stuck or slow boost control B actuator
• A faulty boost pressure sensor
• A binding wastegate linkage on the B circuit
• A boost leak in the charge piping
• A faulty ECM boost command

What to do next

1. Command boost control B with a scan tool and watch actuator travel
2. Graph measured boost against the B command
3. Inspect the B circuit linkage and actuator for sticking
4. Pressure test the charge piping for a leak
5. Replace the boost control B actuator if it ignores the command
6. Clear the code and retest

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