Code result
P2C9A
Throttle Actuator B Control Exceeded Learning Limit
High severity
What it means
The required adaptation offset for throttle actuator B exceeds the calibrated learning window. Mechanical wear, deposit build-up, or sensor drift beyond compensation.
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
Deposits on throttle plate or bore
highOne of the most commonly reported causes for this code — check this first.
TPS reference drifted
mediumA plausible cause — test and verify before replacing parts.
Related help
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