Code result
C056A
Brake Booster Pressure Sensor Power Supply Circuit
High severity
What it means
Fault on brake booster pressure sensor power supply circuit. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Supply wiring fault
highOne of the most commonly reported causes for this code — check this first.
Related help
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