Code result
P211A
Throttle Actuator B Control System - Stuck Open
High severity
What it means
Throttle B is mechanically stuck open — typically carbon buildup or a broken return spring on the secondary throttle plate.
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
Carbon buildup holds plate open
highOne of the most commonly reported causes for this code — check this first.
Return spring broken
mediumA plausible cause — test and verify before replacing parts.
Carbon or debris buildup preventing free movement
lowLess common, but worth ruling out after the more likely causes.
Related help
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